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Pittman, Alison F. "Effect of a School-Based Activity Tracker, Companion Social Website, and Text Messaging Intervention on Exercise, Fitness, and Physical Activity Self-Efficacy of Middle School Students." Journal of School Nursing 36, no. 2 (August 1, 2018): 112–20. http://dx.doi.org/10.1177/1059840518791223.
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This study examined the effect of a 10-week activity tracker, companion social website, and text messaging intervention on body mass index (BMI), body fat percentage, physical fitness, and physical activity (PA) self-efficacy of children. Children ( n = 98) were assigned to one of three groups: activity tracker group, text messaging group, and activity tracker + text messaging group. Pre-/posttest fitness, BMI, PA self-efficacy, and body fat percentage were measured. The activity tracker group had a significant increase in fitness, no significant difference in PA self-efficacy, and an increase in body fat percentage and BMI ( p < .05). The text messaging group had a significant increase in BMI ( p < .05). The activity tracker + text messaging group had no significant differences in fitness, BMI, PA self-efficacy, or body fat percentage. This study gives no clear support to the hypothesis that use of activity trackers and a text messaging intervention have a positive effect on fitness, PA self-efficacy, or body fat percentage.
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Javanmardi, Mohammadreza, and Xiaojun Qi. "Structured group local sparse tracker." IET Image Processing 13, no. 8 (June 20, 2019): 1391–99. http://dx.doi.org/10.1049/iet-ipr.2018.6578.
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Seo, Myong-Won, Youngdeok Kim, Hyun Chul Jung, Jung-Hyun Kim, and Jung-Min Lee. "Does Online Social Connectivity Promote Physical Activity in a Wearable Tracker-Based Intervention? A Pilot Randomized Controlled Study." Sustainability 12, no. 21 (October 23, 2020): 8803. http://dx.doi.org/10.3390/su12218803.
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Wearable activity trackers have gained popularity among individuals who want to track their physical activity (PA). The features of wearable tracking technology that are known to facilitate positive behavior changes such as self-monitoring and social connectedness) are well documented; yet, the existing evidence is not conclusive in the literature requiring further investigation. This study was an 8-week pilot randomized controlled study examining the effectiveness of PA intervention incorporating a wearable activity tracker’s online connectivity feature. Forty participants were equally randomized into either an individual-based (n = 20) or a connected group (n = 20). A Jawbone UP24 tracker was provided to all participants in both groups as a means of self-monitoring PA for eight weeks, but the connected group was additionally instructed to share their PA levels with the others using the accompanying smartphone application. Participants’ weekly step counts were evaluated each week to examine the change in PA. Participants’ biometric variables such as body weight, body mass index, waist circumference, blood pressure, and psychological status, including self-efficacy (SE) and exercise motivation (EM), were measured from both groups before and after the intervention period. Additionally, the social support questionnaire (SSQ) was measured among the connected group. The statistical significance level was set at <0.05. The average step counts for eight weeks were significantly increased only in the connected group (p < 0.001). Significant differences in step count improved from the baseline to week 8 in the connected user group (p < 0.01), but only baseline vs. week 7 in the individual users. Also, no significant interaction effects for biometric variables, EM, and SE were founded. However, SSQ was significantly improved in the connected user group (p < 0.001). PA intervention combining a wearable activity tracker and online social connectivity feature shows a greater effectiveness of promoting PA than a wearable tracker alone
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Brickwood, Katie-Jane, Andrew D. Williams, Greig Watson, and Jane O’Brien. "Older adults’ experiences of using a wearable activity tracker with health professional feedback over a 12-month randomised controlled trial." DIGITAL HEALTH 6 (January 2020): 205520762092167. http://dx.doi.org/10.1177/2055207620921678.
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Objective Wearable activity trackers can help older adults remain physically active. However, knowledge of the user experience during long-term use is scarce. Therefore, this study examined older adults’ experiences with, and perceptions of, wearable activity trackers combined with health professional feedback after a year’s use as part of a randomised controlled trial. Methods Twenty older adults (73.6 ± 5.5 years) who had used a Jawbone UP24 activity tracker for 12 months during a randomised controlled trial were recruited for this study. All participants had at least one chronic condition. Acceptability data relating to activity tracker wear time was combined with focus group data to explore participants experiences of long-term activity tracker use. Data was analysed using thematic analysis. Results The activity tracker was well-accepted with the device worn on an average of 86% of possible days and participants reported an overall positive experience. Four themes were identified: (a) increased sense of awareness of activity levels is related to motivation; (b) the level of engagement with the activity tracker influences the user experience; (c) the role of feedback from a health professional in providing ongoing support; d) the role of habits in supporting long-term behaviour change. Conclusions The use of an activity tracker combined with health professional support can assist older adults to maintain their activity levels over 12 months. Consideration should be given to the previous technology experience of users and the design and accuracy of an activity tracker when recommending their use in a research or clinical setting.
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O’Brien, Tara, Karen Rose, and Alai Tan. "Physical Activity Adherence Rates in Older Kidney Transplant Recipients: A Pilot Randomized Controlled Trial." Innovation in Aging 4, Supplement_1 (December 1, 2020): 884. http://dx.doi.org/10.1093/geroni/igaa057.3263.
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Abstract Daily walking activities are associated with improving cardiovascular and well-being in older kidney transplant recipients. Multicomponent interventions using technology and goal setting holds promise for sustaining daily walking activity among this population. The purpose of this randomized controlled trial pilot study was to evaluate the feasibility of a multicomponent intervention called SystemCHANGE™ + activity tracker for daily walking activity in older (age 60 and over) kidney recipients from baseline to 12 months. The intervention group implement a personal-system solution and wore a mobile activity tracker daily for 12 months. The attention-control group received educational information on healthy living as a transplant recipient and was asked to wear a mobile activity tracker daily for 12 months. Participants were randomized 1:1 to the intervention or control group. The sample consisted of 53 participants (n = 27 intervention, and n = 26 control). At the 12-month follow-up visit, the total study attrition rate was 23%. The adherence rates at 12 months were 96.5% in the intervention group and 80.8% in the attention- control group. The intervention group increased their steps from baseline to 12 months by 334 steps per day. The attention-control group demonstrated a decrease in steps by 563 steps per day. We found a mean difference of 1041± 2440 (Cohen’s d = 0.43) in daily steps between the groups from baseline to 12 months. The data suggests SystemCHANGE™ in combination with activity trackers may be feasible for older kidney transplant recipients to enhance and sustain physical activity with daily walking.
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Shannahan, Anna, Aditya Shah, Katherine Wright, and Deborah S. Clements. "Physician Monitoring of FitBit Use for Patient Health." Global Advances in Health and Medicine 10 (January 2021): 216495612110189. http://dx.doi.org/10.1177/21649561211018999.
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Background Physical activity is a critical component of health. Objective We implemented a pilot project to determine feasibility of embedding activity tracker data within routine primary care visits among family medicine residency patients. This study also examined whether physician monitoring of and feedback concerning tracker improves exercise compliance and overall health. Methods Twenty-six participants received the FitBit Charge HR and were randomized into the self-monitoring (control) or intervention group for 12 weeks. The intervention group received weekly electronic health record (EHR) messages from their physician with feedback. The control group self-monitored activity. Results Data demonstrates patient interest in sharing exercise data with primary providers, patient-generated exercise data can be embedded within visits to personalize recommendations, and patient-physician data sharing is logistically feasible via the EHR. Conclusion Physicians can utilize activity trackers to potentially positively influence patients’ exercise. This research supports the shift toward personalized medicine by facilitating conversations and additional studies about fitness data.
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Lacour, S., R. Dembet, R. Abuter, P. Fédou, G. Perrin, É. Choquet, O. Pfuhl, et al. "The GRAVITY fringe tracker." Astronomy & Astrophysics 624 (April 2019): A99. http://dx.doi.org/10.1051/0004-6361/201834981.
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Context. The GRAVITY instrument was commissioned on the VLTI in 2016 and is now available to the astronomical community. It is the first optical interferometer capable of observing sources as faint as magnitude 19 in K band. This is possible through the fringe tracker, which compensates the differential piston based on measurements of a brighter off-axis astronomical reference source. Aims. The goal of this paper is to describe the main developments made in the context of the GRAVITY fringe tracker. This could serve as basis for future fringe-tracking systems. Methods. The paper therefore covers all aspects of the fringe tracker, from hardware to control software and on-sky observations. Special emphasis is placed on the interaction between the group-delay controller and the phase-delay controller. The group-delay control loop is a simple but robust integrator. The phase-delay controller is a state-space control loop based on an auto-regressive representation of the atmospheric and vibrational perturbations. A Kalman filter provides the best possible determination of the state of the system. Results. The fringe tracker shows good tracking performance on sources with coherent K magnitudes of 11 on the Unit Telescopes (UTs) and 9.5 on the Auxiliary Telescopes (ATs). It can track fringes with a signal-to-noise ratio of 1.5 per detector integration time, limited by photon and background noises. During good seeing conditions, the optical path delay residuals on the ATs can be as low as 75 nm root mean square. The performance is limited to around 250 nm on the UTs because of structural vibrations.
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Md Johar, Md Gapar, Zairina Ibrahim, and Norsyahira Ramli. "Crime Investigation Tracker Using Clustering Algorithm." Journal of Computational and Theoretical Nanoscience 17, no. 2 (February 1, 2020): 1354–60. http://dx.doi.org/10.1166/jctn.2020.8811.
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The clustering algorithm is a method of distributing the population or data points into different groups in a way that data points in a single group are alike to each other in the same group and different from the data points from another groups. Simply, the objective is to isolate groups with similar qualities and allocate them into groups. This research, focus on K-means algorithm. Therefore, type of clustering algorithm used to cluster a group of data without categories. As, the clustering is a subjective phenomenon, that can be employed for accomplishing this objective to find and create group in the data with K as the representation of the number of the groups. Thus, the algorithm procedure uses a dissimilar set of guidelines for describing the relationship between data points and will be clustered together. Indeed, there are over 100 clustering algorithms recognized. However, a crime investigation tracker using clustering algorithm uses K-means algorithm to group the identical crime to be clustered accordingly type of crime recorded in the system. For the system, will be developed using Java programming to build the interface with MySQL as the database to provide a better management to store and retrieve the report. A methodology to develop the system is using Agile Unified Process (AUP) is consists of inception, elaboration, construction, and transition to conducts the current problem of system that various crimes have been increasing, unorganized reports in storage and interface less user friendly of the current system.
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Javanmardi, Mohammadreza, Amir Hossein Farzaneh, and Xiaojun Qi. "A Robust Structured Tracker Using Local Deep Features." Electronics 9, no. 5 (May 20, 2020): 846. http://dx.doi.org/10.3390/electronics9050846.
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Deep features extracted from convolutional neural networks have been recently utilized in visual tracking to obtain a generic and semantic representation of target candidates. In this paper, we propose a robust structured tracker using local deep features (STLDF). This tracker exploits the deep features of local patches inside target candidates and sparsely represents them by a set of templates in the particle filter framework. The proposed STLDF utilizes a new optimization model, which employs a group-sparsity regularization term to adopt local and spatial information of the target candidates and attain the spatial layout structure among them. To solve the optimization model, we propose an efficient and fast numerical algorithm that consists of two subproblems with the close-form solutions. Different evaluations in terms of success and precision on the benchmarks of challenging image sequences (e.g., OTB50 and OTB100) demonstrate the superior performance of the STLDF against several state-of-the-art trackers.
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Drent, Marjolein, Marjon Elfferich, Ellen Breedveld, Jolanda De Vries, and Bert Strookappe. "Benefit of Wearing an Activity Tracker in Sarcoidosis." Journal of Personalized Medicine 10, no. 3 (August 22, 2020): 97. http://dx.doi.org/10.3390/jpm10030097.
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Sarcoidosis causes many disabling symptoms, including fatigue and exercise limitations, which have been shown to improve by physical activity programs. The aim of this study was to estimate the effect of continuous activity monitoring using an electronic activity tracker (AT) on exercise performance and fatigue of sarcoidosis patients, compared to controls (cohort study), and the effect of additional personal coaching (randomized trial) over a period of 3 months. Fifty-four sarcoidosis patients received an AT (Group Ia: 27 with coaching and Group Ib: 27 without). A historical group of sarcoidosis patients (Group II; n = 41) who did not follow a physical activity program served as controls. Exercise performance of patients wearing an AT (Group I) improved compared with controls (Group II), including the 6MWD, % predicted (∆4.4 ± 9.1 versus ∆0.7 ± 5.0, respectively), and fatigue levels decreased (∆−3.9 ± 5.7 versus ∆−1.8 ± 5.3). Patients with coaching (Group Ia) showed greater improvement of exercise capacity over time than patients without coaching (Group Ib) as shown by the Steep Ramp Test results (watts: ∆20.2 ± 33.8 versus ∆5.7 ± 26.4; and SRT, VO2max, % predicted: ∆1.6 ± 2.6 versus ∆0.7 ± 2.3). Sarcoidosis patients wearing an AT achieved improvement of exercise performance and reduction of fatigue. We therefore recommend encouraging sarcoidosis patients to wear an AT to stimulate physical activity and reduce fatigue. The additional benefit of coaching needs to be explored in future studies.
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Kanstrup, Anne Marie, Pernille Bertelsen, and Martin B. Jensen. "Contradictions in digital health engagement: An activity tracker’s ambiguous influence on vulnerable young adults’ engagement in own health." DIGITAL HEALTH 4 (January 2018): 205520761877519. http://dx.doi.org/10.1177/2055207618775192.
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Objective Activity trackers are designed to support individuals in monitoring and increasing their physical activity. The use of activity trackers among individuals diagnosed with depression and anxiety has not yet been examined. This pilot study investigates how this target group engages with an activity tracker during a 10-week health intervention aimed to increase their physical activity level and improve their physical and mental health. Methods Two groups of 11 young adults (aged 18–29 years) diagnosed with depression or anxiety participated in the digital health intervention. The study used mixed methods to investigate the research question. Quantitative health data were used to assess the intervention’s influence on the participants’ health and qualitative data provided insights into the participants’ digital health experience. Results The study demonstrated an ambiguous influence from the use of an activity tracker with positive physical and mental health results, but a fading and even negative digital health engagement and counterproductive competition. Conclusions The ambiguous results identify a need for (1) developing strategies for health professionals to provide supervised use of activity trackers and support the target groups’ abilities to convert health information about physical activity into positive health strategies, and (2) designing alternatives for health promoting IT targeted users who face challenges and need motivation beyond self-tracking and competition.
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Osborn, Chandra Y., Ashley Hirsch, Lindsay E. Sears, Mark Heyman, Jennifer Raymond, Brian Huddleston, and Jeff Dachis. "One Drop App With an Activity Tracker for Adults With Type 1 Diabetes: Randomized Controlled Trial." JMIR mHealth and uHealth 8, no. 9 (September 17, 2020): e16745. http://dx.doi.org/10.2196/16745.
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Background In 2017, mobile app support for managing diabetes was available to 64% of the global population of adults with diabetes. One Drop’s digital therapeutics solution includes an evidence-based mobile app with global reach, a Bluetooth-connected glucometer, and in-app coaching from Certified Diabetes Educators. Among people with type 1 diabetes and an estimated hemoglobin A1c level≥7.5%, using One Drop for 3 months has been associated with an improved estimated hemoglobin A1c level of 22.2 mg/dL (–0.80%). However, the added value of integrated activity trackers is unknown. Objective We conducted a pragmatic, remotely administered randomized controlled trial to evaluate One Drop with a new-to-market activity tracker against One Drop only on the 3-month hemoglobin A1c level of adults with type 1 diabetes. Methods Social media advertisements and online newsletters were used to recruit adults (≥18 years old) diagnosed (≥1 year) with T1D, naïve to One Drop’s full solution and the activity tracker, with a laboratory hemoglobin A1c level≥7%. Participants (N=99) were randomized to receive One Drop and the activity tracker or One Drop only at the start of the study. The One Drop only group received the activity tracker at the end of the study. Multiple imputation, performed separately by group, was used to correct for missing data. Analysis of covariance models, controlling for baseline hemoglobin A1c, were used to evaluate 3-month hemoglobin A1c differences in intent-to-treat (ITT) and per protocol (PP) analyses. Results The enrolled sample (N=95) had a mean age of 41 (SD 11) years, was 73% female, 88% White, diagnosed for a mean of 20 (SD 11) years, and had a mean hemoglobin A1c level of 8.4% (SD 1.2%); 11% of the participants did not complete follow up. Analysis of covariance assumptions were met for the ITT and PP models. In ITT analysis, participants in the One Drop and activity tracker condition had a significantly lower 3-month hemoglobin A1c level (mean 7.9%, SD 0.60%, 95% CI 7.8-8.2) than that of the participants in the One Drop only condition (mean 8.4%, SD 0.62%, 95% CI 8.2-8.5). In PP analysis, participants in the One Drop and activity tracker condition also had a significantly lower 3-month hemoglobin A1c level (mean 7.9%, SD 0.59%, 95% CI 7.7-8.1) than that of participants in the One Drop only condition (mean 8.2%, SD 0.58%, 95% CI 8.0-8.4). Conclusions Participants exposed to One Drop and the activity tracker for the 3-month study period had a significantly lower 3-month hemoglobin A1c level compared to that of participants exposed to One Drop only during the same timeframe. One Drop and a tracker may work better together than alone in helping people with type 1 diabetes. Trial Registration ClinicalTrials.gov NCT03459573; https://clinicaltrials.gov/ct2/show/NCT03459573.
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Janevic, Mary R., Varick Shute, Susan L. Murphy, and John D. Piette. "Acceptability and Effects of Commercially Available Activity Trackers for Chronic Pain Management Among Older African American Adults." Pain Medicine 21, no. 2 (September 11, 2019): e68-e78. http://dx.doi.org/10.1093/pm/pnz215.
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Abstract Background Wearable activity trackers may facilitate walking for chronic pain management. Objective We assessed the acceptability of a commercially available tracker and three alternative modes of reporting daily steps among older adults in a low-income, urban community. We examined whether using the tracker (Fitbit ZipTM) was associated with improvements in functioning and activity. Design Randomized controlled pilot and feasibility trial. Subjects Fifty-one African American adults in Detroit, Michigan, aged 60 to 85 years, with chronic musculoskeletal pain (28 in the intervention group, 23 controls). Methods Participants completed telephone surveys at baseline and eight weeks. Intervention participants wore trackers for six weeks, alternately reporting daily step counts via text messages, automated telephone calls, and syncing (two weeks each). We used multimethods to assess satisfaction with trackers and reporting modalities. Adherence was indicated by the proportion of expected days on which valid step counts were reported. We assessed changes in pain interference, physical function, social participation, walking frequency, and walking duration. Results More than 90% of participants rated trackers as easy to use, but some had technical or dexterity-related difficulties. Text reporting yielded 79% reporting adherence vs 69% each for automated calls and syncing. Intervention participants did not show greater improvement in functioning or walking than controls. Conclusions With appropriate support, wearable activity trackers and mHealth reporting for chronic pain self-care are feasible for use by vulnerable older adults. Future research should test whether the effects of trackers on pain-related outcomes can be enhanced by incorporating behavior change strategies and training in evidence-based cognitive-behavioral techniques.
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Irvine, Katherine N., Melissa R. Marselle, Alan Melrose, and Sara L. Warber. "Group Outdoor Health Walks Using Activity Trackers: Measurement and Implementation Insight from a Mixed Methods Feasibility Study." International Journal of Environmental Research and Public Health 17, no. 7 (April 7, 2020): 2515. http://dx.doi.org/10.3390/ijerph17072515.
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Outdoor walking groups are nature-based interventions (NBIs) that promote health and wellbeing by modifying individual behaviour. The challenges of such NBIs include the motivation of inactive adults to participate and measurement issues. This feasibility study investigates a 12-week group outdoor health walk (GOHW) incorporating activity trackers and use of a holistic health and wellbeing measure, the Self-sasessment of Change (SAC) scale. A mixed methods design explored participant recruitment and retention, programme delivery, and measures of physical activity and health and wellbeing. Walker data included: pre-post questionnaires, daily step counts, and interviews. Programme delivery information included: weekly checklists, staff reflections, stakeholder meeting minutes, and a report. Thirteen adults (age 63–81, 76% female) joined and completed the activity tracker GOHW. Activity trackers motivated walkers to join and be more active but complicated programme delivery. Activity trackers allowed the quantification of physical activity and the SAC health and wellbeing measure was easy to use. By week 12, all participants met national physical activity guidelines. Clinically relevant changes on the SAC scale included: sleeping well, experiencing vibrant senses, and feeling energised, focused, joyful, calm and whole. Results illustrate the feasibility of using activity trackers to motivate engagement in and provide a measure of physical activity from GOHWs. The SAC scale offers a promising measure for nature–health research. A conceptual model is provided for the development of future large-scale studies of NBIs, such as group outdoor health walks.
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O’Brien, Tara, Cynthia L. Russell, Alai Tan, Lorraine Mion, Karen Rose, Brian Focht, Reem Daloul, and Donna Hathaway. "A Pilot Randomized Controlled Trial Using SystemCHANGE™ Approach to Increase Physical Activity in Older Kidney Transplant Recipients." Progress in Transplantation 30, no. 4 (September 10, 2020): 306–14. http://dx.doi.org/10.1177/1526924820958148.
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Background: Cardiovascular disease is the leading cause of death in kidney transplant recipients. Physical activity after transplant is the most modifiable nonpharmacological factor for improving cardiovascular outcomes. Few studies have tested walking interventions to enhance daily steps and health outcomes in older kidney recipients. Methods: Using a pilot feasibility randomized clinical trial design, we tested the feasibility and efficacy of a 6-month SystemCHANGE™ (Change Habits by Applying New Goals and Experience) + Activity Tracker intervention for recruitment, retention, daily steps, and health outcomes (blood pressure, heart rate, body mass index, waist circumference, and physical function). The SystemCHANGE™ + Activity Tracker intervention taught participants to use a multicomponent intervention that connects person-centered systems solutions combined with visual feedback from a mobile activity tracker to achieve daily step goals. Results: Fifty-three participants (mean age 65 years, 66% male, and 57% white) participated with 27 in the intervention and 26 in the control group. The study protocol was feasible to deliver with high adherence to the protocol in both groups. The intervention group increased daily steps at 3 months (mean difference, 608; standard error = 283, P = .03) compared to the control group. The secondary outcome of heart rate decreased for the intervention group (baseline [mean] 74.4+ 10.8 [standard deviation, SD;] vs 6 months [mean] 67.6+ 11.3 [SD]; P = .002) compared to the control group (baseline [mean] 70.67+ 10.4 [SD]; vs 6 months [mean] 70.2 + 11.1 [SD]; P = .83). Conclusions: SystemCHANGE™ + Activity Tracker intervention appears to be feasible and efficacious for increasing daily steps in older kidney recipients.
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An, Hyun-Sung, and Jung-Min Lee. "Assessing the Feasibility of Wearable Activity Tracker with Individual vs. Group Users." Medicine & Science in Sports & Exercise 49, no. 5S (May 2017): 362. http://dx.doi.org/10.1249/01.mss.0000517872.99783.32.
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Ehinger, Benedikt V., Katharina Groß, Inga Ibs, and Peter König. "A new comprehensive eye-tracking test battery concurrently evaluating the Pupil Labs glasses and the EyeLink 1000." PeerJ 7 (July 9, 2019): e7086. http://dx.doi.org/10.7717/peerj.7086.
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Eye-tracking experiments rely heavily on good data quality of eye-trackers. Unfortunately, it is often the case that only the spatial accuracy and precision values are available from the manufacturers. These two values alone are not sufficient to serve as a benchmark for an eye-tracker: Eye-tracking quality deteriorates during an experimental session due to head movements, changing illumination or calibration decay. Additionally, different experimental paradigms require the analysis of different types of eye movements; for instance, smooth pursuit movements, blinks or microsaccades, which themselves cannot readily be evaluated by using spatial accuracy or precision alone. To obtain a more comprehensive description of properties, we developed an extensive eye-tracking test battery. In 10 different tasks, we evaluated eye-tracking related measures such as: the decay of accuracy, fixation durations, pupil dilation, smooth pursuit movement, microsaccade classification, blink classification, or the influence of head motion. For some measures, true theoretical values exist. For others, a relative comparison to a reference eye-tracker is needed. Therefore, we collected our gaze data simultaneously from a remote EyeLink 1000 eye-tracker as the reference and compared it with the mobile Pupil Labs glasses. As expected, the average spatial accuracy of 0.57° for the EyeLink 1000 eye-tracker was better than the 0.82° for the Pupil Labs glasses (N= 15). Furthermore, we classified less fixations and shorter saccade durations for the Pupil Labs glasses. Similarly, we found fewer microsaccades using the Pupil Labs glasses. The accuracy over time decayed only slightly for the EyeLink 1000, but strongly for the Pupil Labs glasses. Finally, we observed that the measured pupil diameters differed between eye-trackers on the individual subject level but not on the group level. To conclude, our eye-tracking test battery offers 10 tasks that allow us to benchmark the many parameters of interest in stereotypical eye-tracking situations and addresses a common source of confounds in measurement errors (e.g., yaw and roll head movements). All recorded eye-tracking data (including Pupil Labs’ eye videos), the stimulus code for the test battery, and the modular analysis pipeline are freely available (https://github.com/behinger/etcomp).
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Mendelsohn, D., I. Despot, PA Gooderham, A. Singhal, GJ Redekop, and BD Toyota. "B.01 Impact of work-hours and sleep on well-being and burnout for physicians-in-training: the prospective RATE Study." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 44, S2 (June 2017): S10. http://dx.doi.org/10.1017/cjn.2017.72.
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Background: Wearable activity trackers are an innovative tool for measuring sleep and physical activity. The Resident Activity Tracker Evaluation (RATE) is a prospective observational study evaluating the impact of work-hours, sleep, and physical activity on resident well-being, burnout, and job satisfaction. Methods: Residents were recruited from: 1. general surgery and orthopedics (SURG), 2. internal medicine and neurology (MED) and 3. anesthesia and radiology (RCD). Groups 1 and 2 do not enforce on-call duration restrictions and group 3 had 12-hour restricted-call durations (RCD). Participants wore FitBit activity trackers for 14 days and completed four validated surveys assessing self-reported health, sleepiness, burnout, and job satisfaction. Results: Fifty-nine residents completed the study. 778 days of activity and 244 on-call periods were tracked. Surgical residents worked 24 more hours per week than non-surgical residents (84.3 vs 60.7). Surgical residents had 7 less hours of sleep per week and reported significantly higher Epworth Sleepiness scores. Nearly two-thirds of participants (61%) scored high burnout on the Maslach depersonalization subscore. Total steps per day and self-reported well-being, burnout, and job satisfaction were comparable between the groups. Conclusions: Despite a positive correlation between work-hours and sleepiness, burnout and well-being were similar among residents. Physical activity did not prevent burnout. These findings are relevant to work-hours policies.
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Gualtieri, Lisa, Sandra Rosenbluth, and Jeffrey Phillips. "Can a Free Wearable Activity Tracker Change Behavior? The Impact of Trackers on Adults in a Physician-Led Wellness Group." JMIR Research Protocols 5, no. 4 (November 30, 2016): e237. http://dx.doi.org/10.2196/resprot.6534.
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Gualtieri, Lisa, Sandra Rosenbluth, and Jeffrey Phillips. "Can a Free Wearable Activity Tracker Change Behavior? The Impact of Trackers on Adults in a Physician-Led Wellness Group." Iproceedings 2, no. 1 (December 15, 2016): e1. http://dx.doi.org/10.2196/iproc.6245.
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Kar, Anuradha. "MLGaze: Machine Learning-Based Analysis of Gaze Error Patterns in Consumer Eye Tracking Systems." Vision 4, no. 2 (May 7, 2020): 25. http://dx.doi.org/10.3390/vision4020025.
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Analyzing the gaze accuracy characteristics of an eye tracker is a critical task as its gaze data is frequently affected by non-ideal operating conditions in various consumer eye tracking applications. In previous research on pattern analysis of gaze data, efforts were made to model human visual behaviors and cognitive processes. What remains relatively unexplored are questions related to identifying gaze error sources as well as quantifying and modeling their impacts on the data quality of eye trackers. In this study, gaze error patterns produced by a commercial eye tracking device were studied with the help of machine learning algorithms, such as classifiers and regression models. Gaze data were collected from a group of participants under multiple conditions that commonly affect eye trackers operating on desktop and handheld platforms. These conditions (referred here as error sources) include user distance, head pose, and eye-tracker pose variations, and the collected gaze data were used to train the classifier and regression models. It was seen that while the impact of the different error sources on gaze data characteristics were nearly impossible to distinguish by visual inspection or from data statistics, machine learning models were successful in identifying the impact of the different error sources and predicting the variability in gaze error levels due to these conditions. The objective of this study was to investigate the efficacy of machine learning methods towards the detection and prediction of gaze error patterns, which would enable an in-depth understanding of the data quality and reliability of eye trackers under unconstrained operating conditions. Coding resources for all the machine learning methods adopted in this study were included in an open repository named MLGaze to allow researchers to replicate the principles presented here using data from their own eye trackers.
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Kim, Kiho, Jiwon Kim, and Jang-Han Lee. "Guilt, Lying, and Attentional Avoidance of Concealed Information." Social Behavior and Personality: an international journal 44, no. 9 (October 9, 2016): 1467–75. http://dx.doi.org/10.2224/sbp.2016.44.9.1467.
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We investigated whether or not liars, as compared to truth tellers, would have an attentional bias for concealed information. To identify attentional avoidant patterns in liars, we measured their eye movements with an eye tracker. The participants were 54 students who had made their own choice about which of 2 groups they would join: the guilty group (n = 27), who were presented with a theft-crime mission to perform, or the nonguilty group (n = 27), who were presented with a legal mission. During the deception detection process, the eye tracker was used to measure participants' attentional bias according to their eye movements while they were presented with pairs of crime-relevant, crime-irrelevant, and neutral stimuli. Results showed that both the guilty and nonguilty groups speedily detected crime-relevant stimuli, but the guilty group became avoidant toward these stimuli, whereas the nonguilty group did not display an avoidant pattern.
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Derakhshan, A., N. Khadem, M. K. Tabatabaei, and S. J. Mazlouman. "Pain tracker diagnostic instrument: effect on patients’ satisfaction with their interactions with the primary care physician." Eastern Mediterranean Health Journal 9, no. 1-2 (April 2, 2003): 113–22. http://dx.doi.org/10.26719/2003.9.1-2.113.
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In a r and omized trial, the pain tracker instrument was evaluated as a diagnostic screening tool and for its effect on patients’ satisfaction with their interactions with the primary care physician. The instrument form was filled in by the physician after asking the study patients about symptoms. Control [n = 53] and study patients [n = 49] were interviewed and the instrument’s effect was analysed from responses to 15 statements. The pain tracker group were significantly more satisfied with the physician relationship than were controls [mean satisfaction score 85 +/- 8 versus 61 +/- 9]. A direct linear correlation was found between patients’ assessment of the visit and overall satisfaction [r = 0.86]. The pain tracker can be an important component in history taking and a useful diagnostic screening tool in pain presentations
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Dvořáček, Filip. "System Software Testing of Laser Tracker Leica AT401." Geoinformatics FCE CTU 13 (December 21, 2014): 49–57. http://dx.doi.org/10.14311/gi.13.6.
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The article introduces a group of instruments called laser trackers and specificallyfocuses on one of them - Leica AT401. At the Research Institute of Geodesy, To-pography and Cartography the instrument has been tested both in laboratory andoutdoor conditions. Several significant errors in the instrument’s system softwarehave been found, mostly due to the creation of user-programmed controlling appli-cation called ATControl. The errors are related to a selection, a computation andan evaluation procedure of the refractive index of air. Finally, notes of the newmeasurement modes of Leica AT40x are given and a range of distance measure-ment is discussed.
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Liu, He Shan, Xun Chen, Jun Zhou, and Wei Liu. "External Appearance and Internal Decoration Design of Loader Based on Eye Tracker." Applied Mechanics and Materials 519-520 (February 2014): 828–32. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.828.
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In today’s marketplace, external appearance and internal decoration become an increasingly important factor that affecting sales volume of product. Moreover, for loaders, the external appearance and decoration of the cab may influence the driver’s comfort both visually and mentally. In order to find out how it works, we divided the experimental subjects into professional group and nonprofessional group and used eye tracker to record subjects’ responses (eye movements) to the pictures of the loader, and then analyzed these responses with the eye tracker build-in analyzing software. The results show that the professional are more interested in functional parts and the nonprofessionals are more likely to be influenced by appearance shape and color; the instrument panel is less attracted during the whole experiments.
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Kyriakis, Aristotelis. "A Historic Data Quality Monitor (HDQM) tool for the CMS Tracker Detector." EPJ Web of Conferences 214 (2019): 05030. http://dx.doi.org/10.1051/epjconf/201921405030.
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Monitoring the time evolution of data related observables is important for the successful operation of the LHC experiments. It permits keeping control on data quality during LHC running and also effectively checking the influence on data of any detector calibration performed during the year. The Historic Data Quality Monitor (HDQM) of the CMS experiment is a framework developed by the Tracker group of the CMS collaboration that permits a web-based monitoring of the time evolution of interesting quantities (i.e. signal to noise ratio, cluster size) in the Tracker Silicon micro-strip and pixel.
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Sartika, Yuni, Ismu Wahyudi, and Abdurrahman Abdurrahman. "Using Guided Inquiry Learning with Tracker Application to Improve Students’ Graph Interpretation Ability." Tadris: Jurnal Keguruan dan Ilmu Tarbiyah 4, no. 1 (June 30, 2019): 17–25. http://dx.doi.org/10.24042/tadris.v4i1.3060.
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The graph interpretation ability is an important ability for students in conducting physics experiments. The tracker application in straight motion topic can track objects precisely and accurately. This research aims to find out how the effect of tracker use on straight-motion learning based on guided inquiry on the ability of students' graph interpretation. The sample of this research is students of class X, in one of the State Senior High School in Bandar Lampung. The research design used was one group pretest-posttest. Learning is carried out by conducting guided inquiry-based straight-line experiment activities, then processing experimental data by analyzing experimental videos using tracker software. Data on students' interpretation ability is obtained using a test (pretest-posttest). Data analysis techniques for student learning outcomes using Paired Sample T-Test. Based on the results of the research obtained the average score of the ability to interpret the graph increased by 59.00% with a high mean of N-gain (0.71) at a 95% confidence level. These results indicate that learning by using a tracker can improve the ability to interpret graphics very well. Based on the test results obtained a significance of 0.000, which is less than 0.05, it can be concluded that there are significant differences in the ability of students to interpret graphics before and after learning using a tracker.
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O’Brien, Tara, Cynthia Russell, and Donna Hathaway. "INCREASING PHYSICAL ACTIVITY POST-KIDNEY TRANSPLANT: A PILOT RANDOMIZED CONTROLLED TRIAL." Innovation in Aging 3, Supplement_1 (November 2019): S521. http://dx.doi.org/10.1093/geroni/igz038.1919.
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Abstract Older kidney transplant recipients are at risk for graft failure and death due to lack of physical activity. Physical activity after transplant is the most modifiable non-pharmacological factor for improving physical function. One personal system intervention called, SystemCHANGE™ in combination with activity trackers, holds promise for increasing physical activity among this population. The purpose of this pilot randomized controlled trial was to evaluate the efficacy of SystemCHANGE™ on increasing average daily steps in older (age 60 and over) kidney transplant recipients from baseline to 6 months. The intervention group met monthly to implement a successful personal system solution based on their daily routines and step-data collected from the activity tracker. The control group received monthly educational information on healthy living with a transplant. Participants were randomized 1:1 to the intervention or control group. The sample consisted of 31 participants (n = 15 intervention, and n = 16 control). No significant differences were found at baseline among the groups for demographics, self-efficacy and health outcomes (blood pressure, weight, waist circumference, 6 minute Walk Test). However, the intervention group had greater increase in the average daily steps from baseline to 6 months (mean ± SD: 1511 ± 2320) as compared to the control group (181 ± 2419). The between-group difference was of medium effect size (d = .56).The data suggests SystemCHANGE™ in combination with activity trackers may be feasible for older kidney transplant recipients to enhance daily steps.
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Habibbulloh, Muhammad, and Madlazim Madlazim. "PENERAPAN METODE ANALISIS VIDEO SOFTWARE TRACKER DALAM PEMBELAJARAN FISIKA KONSEP GERAK JATUH BEBAS UNTUK MENINGKATKAN KETERAMPILAN PROSES SISWA KELAS X SMAN 1 SOOKO MOJOKERTO." Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 4, no. 1 (June 14, 2014): 15. http://dx.doi.org/10.26740/jpfa.v4n1.p15-22.
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Telah dilakukan penelitian untuk mengetahui keterampilan proses yang dimiliki siswa setelah menerapkan metode analisis video software Tracker di kelas X SMAN 1 Sooko Mojokerto. Tujuan penelitian ini adalah mendeskripsikan keterlaksanaan pembelajaran, keterampilan proses sains yang dimiliki siswa setelah menerapkan metode analisis video software Tracker, aktivitas siswa, respon siswa, dan kendala yang dihadapi pada saat pembelajaran. Jenis dari penelitian ini adalah Deskriptif Kuantitatif dengan desain one group pretest posttest, satu kelas yang diberi perlakuan dan direplikasi satu kali. Dari hasil yang diperoleh dapat disimpulkan bahwa keterampilan proses siswa dalam hal mengamati, mengukur, merancang eksperimen, interpretasi data, dan berkomunikasi setelah menerapkan metode analisis video software Tracker mengalami kenaikan baik secara kualitas maupun kuantitas. Dimana keterlaksaan pembelajaran yang baik, aktivitas siswa yang sangat baik, respon siswa yang juga baik, beberapa kendala yang muncul saat kegiatan pembelajaran telah dapat diatasi. Secara kuantitas terlihat dari peningkatan jumlah siswa yang tuntas dalam mengerjakan soal keterampilan proses. Secara kualitas adalah peningkatan skor rata-rata tiap kelas pada saat post tes dibandingkan hasil pre tes.
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Asrizal, Asrizal, Yohandri Yohandri, and Zulhendri Kamus. "Studi Hasil Pelatihan Analisis Video dan Tool Pemodelan Tracker pada Guru MGMP Fisika Kabupaten Agam." JURNAL EKSAKTA PENDIDIKAN (JEP) 2, no. 1 (May 24, 2018): 41. http://dx.doi.org/10.24036/jep/vol2-iss1/84.
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Experiment is important in physics to explain and describe a physical phenomenon and its characteristics. For this reason physics teachers should conduct the physics experiment activities to motivate students in learning and to improve scientific process skills, scientific attitudes, and student understanding in physics learning. However, in the experiment activities of physics were found many problems such as experiment equipment was insufficient, there is no equipment, equipment can�t operated well, and so on. An alternative solution to solve this problem was to do the video analysis and modeling tool tracker on physics teacher. The purpose of this research was to investigate the effects of the implementation the tracker video analysis and modeling tool on physics teachers. The research design was pretest and postest for one group sample. The sample of research was 26 physics teachers of Physics MGMP teacher in Agam district of West Sumatera. Instruments to collect the data consist of pretest and postest sheet, performance assessment sheet of video analysis product and questionnaires sheet of physics teachers. Data analysis techniques include descriptive statistical analysis, normality test, homogeneity test and paired comparison test for one group sample. From the data analysis, it can be stated that: 1). the average value of video analysis products from physics teachers is 85.10 and this value can be classified into very good category, 2). the average value of responses of physics teachers on training implementation of video analysis and tool modeling is 73.81 and this average value can be grouped into good category, and 3). the implementation of video analysis training of object motion video by using tracker software is effective to improve the understanding the physics MGMP teachers in Agam district on learning material of tracker video analysis and modeling tool, but the average value of understanding still in the low category.
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Dean, Donnatesa A. L., Derek M. Griffith, Sydika A. McKissic, Emily K. Cornish, and Vicki Johnson-Lawrence. "Men on the Move–Nashville: Feasibility and Acceptability of a Technology-Enhanced Physical Activity Pilot Intervention for Overweight and Obese Middle and Older Age African American Men." American Journal of Men's Health 12, no. 4 (April 19, 2016): 798–811. http://dx.doi.org/10.1177/1557988316644174.
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Men on the Move–Nashville was a quasi-experimental, 10-week pilot physical activity intervention. A total of 40 overweight or obese African American men ages 30 to 70 (mean age = 47) enrolled in the intervention. Participants attended 8 weekly, 90-minute small group sessions with a certified personal trainer. Each session consisted of discussions aimed to educate and motivate men to be more physically active, and an exercise component aimed to increase endurance, strength, and flexibility. Throughout each week, men used wearable activity trackers to promote self-monitoring and received informational and motivational SMS text messages. Of the 40 enrolled men, 85% completed the intervention, and 80% attended four or more small group sessions. Additionally, 70% of participants successfully used the activity tracker, but only 30% of men utilized their gym memberships. Participants benefited from both the small group discussions and activities through increasing social connection and guidance from their trainer and group members. These African American men reported being motivated to engage in physical activity through each of these technologies. Men reported that the activity trackers provided an important extension to their social network of physically active people. The intervention resulted in significant increases in men’s self-reported levels of light, moderate, vigorous, and sports-related physical activities, and high-density lipoprotein cholesterol levels, and significant decreases in weight and body fat percentage with small, moderate and large effects shown. Including technology and didactic components in small group-based interventions holds promise in motivating African American men to increase their physical activity.
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Jayawardene, Wasantha, Lesa Huber, Jimmy McDonnell, Laurel Curran, Sarah Larson, Stephanie Dickinson, Xiwei Chen, Erika Pena, Aletha Carson, and Jeanne Johnston. "‘Tracking Together’—Simultaneous Use of Human and Dog Activity Trackers: Protocol for a Factorial, Randomized Controlled Pilot Trial." International Journal of Environmental Research and Public Health 18, no. 4 (February 7, 2021): 1561. http://dx.doi.org/10.3390/ijerph18041561.
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Dog-walkers are more likely to achieve moderate-intensity physical activity. Linking the use of activity trackers with dog-walking may be beneficial both in terms of improving the targeted behavior and increasing the likelihood of sustained use. This manuscript aims to describe the protocol of a pilot study which intends to examine the effects of simultaneous use of activity trackers by humans and their dogs on the physical activity level of humans and dogs. This study uses nonprobability sampling of dog owners of age 25–65 (N = 80) and involves four parallel groups in an observational randomized controlled trial with a 2 × 2 factorial design, based on use of dog or human activity trackers for eight weeks. Each group consists of dog-human duos, in which both, either or none are wearing an activity tracker for eight weeks. At baseline and end, all human subjects wear ActiGraph accelerometers that quantify physical activity for one week. Commercial activity trackers are used for tracking human and dog activity remotely. Additional measures for humans are body composition and self-reported physical activity. Dog owners also report dog’s weight and physical activity using a questionnaire. A factorial analysis of covariance (ANCOVA) is used to compare physical activity across the four groups from baseline to week-10.
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Tang, Matilda Swee Sun, Katherine Moore, Andrew McGavigan, Robyn A. Clark, and Anand N. Ganesan. "Effectiveness of Wearable Trackers on Physical Activity in Healthy Adults: Systematic Review and Meta-Analysis of Randomized Controlled Trials." JMIR mHealth and uHealth 8, no. 7 (July 22, 2020): e15576. http://dx.doi.org/10.2196/15576.
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Background Wearable trackers are an increasingly popular tool among healthy adults and are used to facilitate self-monitoring of physical activity. Objective We aimed to systematically review the effectiveness of wearable trackers for improving physical activity and weight reduction among healthy adults. Methods This review used the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology and reporting criteria. English-language randomized controlled trials with more than 20 participants from MEDLINE, CINAHL, Cochrane Library, Web of Science, PubMed, and Scopus (2000-2017) were identified. Studies were eligible for inclusion if they reported an intervention group using wearable trackers, reporting steps per day, total moderate-to-vigorous physical activity, activity, physical activity, energy expenditure, and weight reduction. Results Twelve eligible studies with a total of 1693 participants met the inclusion criteria. The weighted average age was 40.7 years (95% CI 31.1-50.3), with 64.4% women. The mean intervention duration was 21.4 weeks (95% CI 6.1-36.7). The usage of wearable trackers was associated with increased physical activity (standardized mean difference 0.449, 95% CI 0.10-0.80; P=.01). In the subgroup analyses, however, wearable trackers demonstrated no clear benefit for physical activity or weight reduction. Conclusions These data suggest that the use of wearable trackers in healthy adults may be associated with modest short-term increases in physical activity. Further data are required to determine if a sustained benefit is associated with wearable tracker usage.
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Adamis, D., M. Unal, and E. O’Mahony. "Use of eye-tracker device to detect attention deficits in adults with ADHD." European Psychiatry 41, S1 (April 2017): S764. http://dx.doi.org/10.1016/j.eurpsy.2017.01.1436.
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IntroductionAdult patients with ADHD may go unrecognized. This can result in psychosocial and functional decline.ObjectivesTo investigate the use of objective testing, with an eye-tracker device in the diagnosis of adult patients with ADHD.MethodsCase control study. Inclusion criteria were aged 18–65, minimum 5 years of education and literate in English. Exclusion criteria were visual impairment, amnesia and learning difficulties. ADHD was diagnosed with Conners’ adult ADHD diagnostic interview (group A, n = 15) and were matched for gender and age against normal controls (group B, n = 33). Participants completed four computer-based tasks while their eye movements were recorded. The tests included (i) Stroop effect test, (ii) Stroop effect test with visual aid, (iii) perceptual selectivity test and (iv) Saccadic interference. accuracy (%) and response time (msec) for tests (i–iii) measured while for test (iv), saccade count, average saccade amplitude and average fixation duration.ResultsStroop test accuracy showed a statistically significant difference between group A and group B (P = 0.004). Stroop response time also showed a statistically significant difference between the two groups (t = 3.228, df: 46, P = 0.001). For test (ii), there was a significant difference for response time (t = 2.326, df: 46, P = 0.024) but not for accuracy. For test (iii), the results were statistically significant for accuracy; (t = 2.682, df: 46, P = 0.010) and for response time (t = 4.028, df: 46, P = 0.001). There were no significant differences in the saccadic interference test.ConclusionAdults with ADHD have a longer response time and perform less accurately than controls. Thus, these data demonstrate that there is a use for objective tests (tests i–iii) in the diagnosis of adult ADHD.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Agustin, Furi Chorina, Yudi Dirgantara, and Ade Yeti Nuryantini. "PEMANFAATAN MEDIA SOFTWARE TRACKER UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS PESERTA DIDIK PADA MATERI IMPULS DAN MOMENTUM DI SMKN 1 SOREANG." Journal of Teaching and Learning Physics 2, no. 1 (March 1, 2017): 17–22. http://dx.doi.org/10.15575/jotalp.v2i1.6583.
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This study originated from the lack of utilization of learning media during the learning process. Teaching methods used by teachers are less varied so that learners are only trained in cognitive abilities only while for high-level thinking skills such as critical thinking ability is still low. One alternative that can be done to improve the skills of critical thinking is to utilize the Software Tracker media. This study aims to determine the improvement of critical thinking skills of learners through the use of Software Tracker media on the material impulse and momentum. The research method used is Pre-Experiment with design One-Group Pretest-Posttest Design. The sample of this research using Purposive Sampling technique. The research instrument used in this research is the critical thinking skills of the students of impulse material and momentum to measure the critical thinking ability of learners. The data analysis technique uses normality test, and t test to normalized n-gain value from pretest and posttest value of learners using Microsoft Excel. The results showed that the critical thinking skills of learners increased after utilizing the Software Tracker media during learning. The result of this research is proved from the significant value of ttable test of 1.691 while t count is 24.53 which means H0 is rejected and Ha accepted. The results of this study indicate that the use of Software Tracker media on the material impulse and momentum have a positive impact on improving the critical thinking skills of learners.
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Hermanns, Melinda, Barbara K. Haas, and Jerome Lisk. "Engaging Older Adults With Parkinson’s Disease in Physical Activity Using Technology: A Feasibility Study." Gerontology and Geriatric Medicine 5 (January 2019): 233372141984267. http://dx.doi.org/10.1177/2333721419842671.
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Parkinson’s disease (PD), a progressive neurodegenerative disorder, presents unique and daily challenges. Living with PD may limit one’s physical activity and negatively affect quality of life (QOL). No studies were identified that utilized online technology to promote health in this population. The purposes of this study were to (a) assess the feasibility of an intervention that requires wearing a physical activity tracker and participating in an online support group, and (b) examine the effect of this intervention on the self-efficacy for physical activity and QOL of older adults with PD. A 12-week longitudinal pretest/posttest design was used to assess physical activity, engagement in an online support group, self-efficacy, and QOL. A postintervention questionnaire was used to capture the participants’ ( n = 5) experience using the physical activity tracker and an electronic tablet to engage in an online support group. The sample size of this feasibility study precluded robust quantitative analysis of QOL or self-efficacy. Findings from the open-ended questionnaire suggest technology was challenging for most participants, yet it did provide social support. Teaching effective interventions to promote self-management for increasing physical activity, and consequently improving QOL, is recommended. While technology can assist, older persons with PD may experience technological challenges.
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Nadeau, Nicholas A., Ilian A. Bonev, and Ahmed Joubair. "Impedance Control Self-Calibration of a Collaborative Robot Using Kinematic Coupling." Robotics 8, no. 2 (April 23, 2019): 33. http://dx.doi.org/10.3390/robotics8020033.
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This paper presents a closed-loop calibration approach using impedance control. The process is managed by a data communication architecture based on open-source tools and designed for adaptability. The calibration procedure uses precision spheres and a kinematic coupling standard machine tool components, which are suitable for harsh industrial environments. As such, the required equipment is low cost (approximately group-separator = , 2000 [$]USD), robust, and is quick to set up, especially when compared to traditional calibration devices. As demonstrated through an experimental study and validated with a laser tracker, the absolute accuracy of the KUKA LBR iiwa robot was improved to a maximum error of 0 . 990 , representing a 58.4% improvement when compared to the nominal model. Further testing showed that a traditional calibration using a laser tracker only improved the maximum error by 58 μ m over the impedance control approach.
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Kononova, Anastasia, Lin Li, Kendra Kamp, Marie Bowen, RV Rikard, Shelia Cotten, and Wei Peng. "The Use of Wearable Activity Trackers Among Older Adults: Focus Group Study of Tracker Perceptions, Motivators, and Barriers in the Maintenance Stage of Behavior Change." JMIR mHealth and uHealth 7, no. 4 (April 5, 2019): e9832. http://dx.doi.org/10.2196/mhealth.9832.
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Yeung, Jennifer, Donna Mazloomdoost, Catrina C. Crisp, Steven Kleeman, and Rachel N. Pauls. "Impact of Electronic Feedback and Peer Comparisons on Residents' Physical Activity Level." Journal of Graduate Medical Education 9, no. 4 (August 1, 2017): 527–30. http://dx.doi.org/10.4300/jgme-d-16-00425.1.
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ABSTRACT Background Activity tracking devices can reinforce physical fitness and may be beneficial to resident physicians. To date, their use has not been evaluated. Objective To determine if use of an activity tracking device increases residents' activity, measured as steps per day. Methods A prospective, crossover study involved residents at 1 academic hospital system. Participants were weighed and completed a baseline survey. All participants were asked to wear an activity tracking device for 8 weeks. Residents were blinded to feedback from the device on activity level during the first 4 weeks. During the second 4-week period, participants were given access to data on activity level and were invited to join a voluntary activity tracking group. Results Of 104 residents invited to participate, 86 enrolled. The majority of participants were female and did not have experience using activity trackers. Almost half (49%, 51 of 104) had a body mass index greater than 25 kg/m2. The median steps per day of all participants during the blinded period was 7260. This increased to 8266 steps per day during the unblinded period. Surgical residents recorded significantly more steps than nonsurgical specialties (7938 versus 6724, P = .018). The 26 residents who joined the voluntary activity tracking group registered higher median steps per day, and wore their activity tracker more consistently. Conclusions Providing residents with activity trackers, increasing feedback, and providing comparisons to peers may enhance residents' physical activity levels.
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Dvořáček, Filip. "SURVEY OF SELECTED PROCEDURES FOR THE INDIRECT DETERMINATION OF THE GROUP REFRACTIVE INDEX OF AIR." Acta Polytechnica 58, no. 1 (February 28, 2018): 9. http://dx.doi.org/10.14311/ap.2018.58.0009.
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The main aim of the research was to evaluate numeric procedures of the indirect determination of the group refractive index of air and to choose the suitable ones for requirements of ordinary and high accuracy distance measurement in geodesy and length metrology. For this purpose, 10 existing computation methods were derived from various authors’ original publications and all were analysed for wide intervals of wavelengths and atmospheric parameters. The determination of the phase and the group refractive indices are essential parts in the evaluation of the first velocity corrections of laser interferometers and electronic distance meters. The validity of modern procedures was tested with respect to updated CIPM-2007 equations of the density of air. The refraction model of Leica AT401 laser tracker was analysed.
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Schaben, Jodee A., and Stacy Furness. "Investing in college students: the role of the fitness tracker." DIGITAL HEALTH 4 (January 2018): 205520761876680. http://dx.doi.org/10.1177/2055207618766800.
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Fitness trackers are becoming a popular way to encourage physical activity and impact health behaviors. Although many college students may own and use fitness trackers, they remain a high-risk group in terms of rates of obesity and lack of physical activity. In this study, college students were provided with fitness trackers to self-monitor step count. Pre- and post-measures of body composition, resting heart rate and blood pressure, knowledge of physical activity behaviors and perception of wellness were used to determine the impact of the fitness trackers. The research was completed in two phases: phase one with completely voluntary participation and phase two as a part of a required general education wellness course. Results did not indicate a significant change in step count over 12 weeks nor did they show positive change in body measurements; however, there were indicators of activity benefits. Knowledge and perception of wellness were not positively impacted in the voluntary study; however, when the education component was required, some increases in knowledge and perception of wellness were shown in the general education course. Many lessons were learned in the study that should be considered when planning future research with fitness trackers in the college-age setting.
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Wosylus, Aurelius. "Im 0G-Netz geht jetzt die Post ab." Logistik für Unternehmen 33, no. 10 (2019): 26–29. http://dx.doi.org/10.37544/0930-7834-2019-10-26.
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Die Deutsche Post DHL Group nutzt jetzt das neue 0G-Netz von Sigfox für die Überwachung ihrer Lieferketten. Den Ausschlag gab die sehr hohe Netzabdeckung in Deutschland. Das Netz ist außerdem grenzüberschreitend verfügbar. Dies nutzte bereits der 2017 eingeführte Koffer-Tracker von Louis Vuitton. Sigfox war bereits zu dieser Zeit an vielen Flughäfen weltweit verfügbar, erhebt keinerlei Roaming-Gebühren und ist derzeit in 60 Ländern verfügbar.
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Cho, Chul-Hyun, Taek Lee, Jung-Been Lee, Ju Yeon Seo, Hee-Jung Jee, Serhim Son, Hyonggin An, Leen Kim, and Heon-Jeong Lee. "Effectiveness of a Smartphone App With a Wearable Activity Tracker in Preventing the Recurrence of Mood Disorders: Prospective Case-Control Study." JMIR Mental Health 7, no. 8 (August 5, 2020): e21283. http://dx.doi.org/10.2196/21283.
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Background Smartphones and wearable devices can be used to obtain diverse daily log data related to circadian rhythms. For patients with mood disorders, giving feedback via a smartphone app with appropriate behavioral correction guides could play an important therapeutic role in the real world. Objective We aimed to evaluate the effectiveness of a smartphone app named Circadian Rhythm for Mood (CRM), which was developed to prevent mood episodes based on a machine learning algorithm that uses passive digital phenotype data of circadian rhythm behaviors obtained with a wearable activity tracker. The feedback intervention for the CRM app consisted of a trend report of mood prediction, H-score feedback with behavioral guidance, and an alert system triggered when trending toward a high-risk state. Methods In total, 73 patients with a major mood disorder were recruited and allocated in a nonrandomized fashion into 2 groups: the CRM group (14 patients) and the non-CRM group (59 patients). After the data qualification process, 10 subjects in the CRM group and 33 subjects in the non-CRM group were evaluated over 12 months. Both groups were treated in a similar manner. Patients took their usual medications, wore a wrist-worn activity tracker, and checked their eMoodChart daily. Patients in the CRM group were provided with daily feedback on their mood prediction and health scores based on the algorithm. For the CRM group, warning alerts were given when irregular life patterns were observed. However, these alerts were not given to patients in the non-CRM group. Every 3 months, mood episodes that had occurred in the previous 3 months were assessed based on the completed daily eMoodChart for both groups. The clinical course and prognosis, including mood episodes, were evaluated via face-to-face interviews based on the completed daily eMoodChart. For a 1-year prospective period, the number and duration of mood episodes were compared between the CRM and non-CRM groups using a generalized linear model. Results The CRM group had 96.7% fewer total depressive episodes (n/year; exp β=0.033, P=.03), 99.5% shorter depressive episodes (total; exp β=0.005, P<.001), 96.1% shorter manic or hypomanic episodes (exp β=0.039, P<.001), 97.4% fewer total mood episodes (exp β=0.026, P=.008), and 98.9% shorter mood episodes (total; exp β=0.011, P<.001) than the non-CRM group. Positive changes in health behaviors due to the alerts and in wearable device adherence rates were observed in the CRM group. Conclusions The CRM app with a wearable activity tracker was found to be effective in preventing and reducing the recurrence of mood disorders, improving prognosis, and promoting better health behaviors. Patients appeared to develop a regular habit of using the CRM app. Trial Registration ClinicalTrials.gov NCT03088657; https://clinicaltrials.gov/ct2/show/NCT03088657
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Curran, Maire, Audrey C. Tierney, Louise Collins, Lauren Kennedy, Ciara McDonnell, Andrew J. Jurascheck, Ali Sheikhi, et al. "Steps Ahead: optimising physical activity and health in people with cystic fibrosis: Study Protocol for a pilot randomised trial." HRB Open Research 3 (May 5, 2020): 21. http://dx.doi.org/10.12688/hrbopenres.13025.1.
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Background: Physical activity (PA) and exercise are widely documented as key components in the management of cystic fibrosis (CF). In recent years there have been significant improvements in telehealth, in particular; fitness tracking, smartphone use and remote monitoring, all of which may have potential to impact on positive health outcomes in people with CF. The objective of this pilot randomised trial is to explore the potential efficacy of a fitness tracker, which is remotely monitored, combined with personalised text message feedback and goal setting, on lung function, aerobic capacity and PA in adults with CF. Secondary endpoints include quality of life, body composition and wellbeing. Methods: This is a pilot randomised trial which will be conducted at the University Hospital Limerick, Ireland. Participants will be randomised to the intervention or active comparator after their baseline assessment. The 12-week intervention will consist of a fitness tracker (Fitbit Charge 2) which is linked to an online monitoring system (Fitabase) for data collection purposes that enables the physiotherapist to remotely monitor participant data. The CF physiotherapist will set short- and long-term goals with participants and will send one-way text message feedback on Fitbit data and weekly progress. This message will consist of positive reinforcement and re-assess participant goals. The active comparator group will receive a fitness tracker which is also linked to Fitabase; however, no feedback will be provided to participants in this group. Both groups will be re-assessed at 12 weeks. After this point, both groups will continue with the Fitbit alone for a further 12 weeks. Both groups will be re-assessed at 24 weeks. Discussion: This is a novel concept which utilises modern technology, remote monitoring and personalised feedback to investigate the effect on health outcomes in people with CF. Trial registration: ClinicalTrials.gov NCT03672058 (14/09/2018)
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Mariati, P. S., M. T. Betty, and S. Sehat. "THE PROBLEM SOLVING LEARNING MODEL BY USING VIDEO RECORDING ON EXPERIMENTS OF KINEMATICS AND DYNAMICS TO IMPROVE THE STUDENTS COGNITION AND METACOGNITION." Jurnal Pendidikan Fisika Indonesia 13, no. 1 (January 3, 2017): 25–32. http://dx.doi.org/10.15294/jpfi.v13i1.10154.
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This research aimed to improve studentss cognition and metacognition through kinematics and dynamics of particle experiment assissted by video recording and tracker software analysis. The research used problem solving learning model which developed using R & D method with 4-D steps, they are define, design, develop, and disseminate. The research involved 86 physics education students academic year 2013/2014 at one of the universities in Medan. The research method is quasi-experimental using randomized control group pretest-posttest design. The experimental class used problem solving learning model assisted by video recording and the control class used direct learning model. The cognition data were collected using multiple-choice test and meta-cognition data were collected using essay test. The studentss cognition and metacognition improvement characterized by the normalized gain score. The research result show that the use of video recording and tracker software analysis was improve the students cognition and metacognition in Kinematics and Dynamics topic in moderate category.
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Ng, Amy, Ekta Gupta, Swati Bansal, Rhodora C. Fontillas, Janet L. Williams, Seyedeh Dibaj, and Eduardo Bruera. "Cancer patients’ perception of usefulness with wearable exercise tracker." Journal of Clinical Oncology 36, no. 34_suppl (December 1, 2018): 51. http://dx.doi.org/10.1200/jco.2018.36.34_suppl.51.
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51 Background: Wearable trackers (WT) are known for its popular use in healthy, active persons but limited studies have been conducted in cancer survivors. Methods: Participants were asked to wear the WT and synchronize data. Patients were asked to fill out questionnaire regarding their patient reported perceptions of the WT and their perception of usefulness of the WT. Results: 110 cancer patients were enrolled with 100 evaluable surveys. Median age of patients was 62 years old, females (60, 55%), white (79,73%), married/with significant other (77, 71%), with college education and above (51, 47%). There was no statistically significant association between demographic factors of age, gender, ethnicity, marital status, or education and the perception of usefulness of the WT. Eighty-four percent of outpatient (OP) and 67% of inpatient (IP) cancer patients perceived WT as useful, 96% OP and 94% IP reported wearing WT daily, 64% OP and 55% IP perceived WT as helping to increase physical activity and 76% OP and 59% IP would continue to wear WT after this study. For inpatients, ESAS score of pain (p value <0.001), shortness of breath (p value <0.0002) and feeling of well-being (p value <0.001) improved over the course of rehabilitation. Improvement in FIM scores for transfers to wheelchair, walk assistance, walk distance, walking, stairs assistance, and stairs is significantly improved in rehabilitation (p value<0.05). The average resting heart rate was 77 beats per minute and average number of steps per day was 1,863. For outpatients, the average resting heart rate was 77 beats per minute and average number of steps per day was 3,423. Patients who reported the WT as useful had significantly lower fatigue severity (3.3 vs. 6, p value<0.05). Conclusions: Cancer patients perceived the WT as useful in both the inpatient and outpatient rehabilitation setting. No specific sub-group(s) of patients who expressed a higher level of agreement for usefulness of a wearable exercise tracker. There was an association between lower ESAS fatigue score and patient agreement of usefulness of the WT. These findings justify more research in WT and cancer rehabilitation. Clinical trial information: NCT03042884.
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LUMER, ERIK D. "SELECTIVE ATTENTION TO PERCEPTUAL GROUPS: THE PHASE TRACKING MECHANISM." International Journal of Neural Systems 03, no. 01 (January 1992): 1–17. http://dx.doi.org/10.1142/s0129065792000024.
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We introduce a new mechanism of selective attention among perceptual groups as part of a computational model of early vision. In this model, selection of objects is a two-stage process: perceptual grouping is first performed in connectionist networks which dynamically bind together the neural activities triggered in response to related features in the image; secondly, by locking its output on the quasi-periodic bursts of activity associated with a single perceptual group, a system called the phase-tracker produces a temporal filter which retains the selected group for further processing while rejecting the unattended ones. The properties of our model are investigated in a number of simulations and interpreted in the context of current theories of visual attention developed in psychology.
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Blair, Cindy K., Elizabeth Harding, Charles Wiggins, Huining Kang, Matthew Schwartz, Amy Tarnower, Ruofei Du, and Anita Y. Kinney. "A Home-Based Mobile Health Intervention to Replace Sedentary Time With Light Physical Activity in Older Cancer Survivors: Randomized Controlled Pilot Trial." JMIR Cancer 7, no. 2 (April 13, 2021): e18819. http://dx.doi.org/10.2196/18819.
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Background Older cancer survivors are at risk of the development or worsening of both age- and treatment-related morbidity. Sedentary behavior increases the risk of or exacerbates these chronic conditions. Light-intensity physical activity (LPA) is more common in older adults and is associated with better health and well-being. Thus, replacing sedentary time with LPA may provide a more successful strategy to reduce sedentary time and increase physical activity. Objective This study primarily aims to evaluate the feasibility, acceptability, and preliminary efficacy of a home-based mobile health (mHealth) intervention to interrupt and replace sedentary time with LPA (standing and stepping). The secondary objective of this study is to examine changes in objective measures of physical activity, physical performance, and self-reported quality of life. Methods Overall, 54 cancer survivors (aged 60-84 years) were randomized in a 1:1:1 allocation to the tech support intervention group, tech support plus health coaching intervention group, or waitlist control group. Intervention participants received a Jawbone UP2 activity monitor for use with their smartphone app for 13 weeks. Tech support and health coaching were provided via 5 telephone calls during the 13-week intervention. Sedentary behavior and physical activity were objectively measured using an activPAL monitor for 7 days before and after the intervention. Results Participants included survivors of breast cancer (21/54, 39%), prostate cancer (16/54, 30%), and a variety of other cancer types; a mean of 4.4 years (SD 1.6) had passed since their cancer diagnosis. Participants, on average, were 70 years old (SD 4.8), 55% (30/54) female, 24% (13/54) Hispanic, and 81% (44/54) overweight or obese. Malfunction of the Jawbone trackers occurred in one-third of the intervention group, resulting in enrollment stopping at 54 rather than the initial goal of 60 participants. Despite these technical issues, the retention in the intervention was high (47/54, 87%). Adherence was high for wearing the tracker (29/29, 100%) and checking the app daily (28/29, 96%) but low for specific aspects related to the sedentary features of the tracker and app (21%-25%). The acceptability of the intervention was moderately high (81%). There were no significant between-group differences in total sedentary time, number of breaks, or number of prolonged sedentary bouts. There were no significant between-group differences in physical activity. The only significant within-group change occurred within the health coaching group, which increased by 1675 daily steps (95% CI 444-2906; P=.009). This increase was caused by moderate-intensity stepping rather than light-intensity stepping (+15.2 minutes per day; 95% CI 4.1-26.2; P=.008). Conclusions A home-based mHealth program to disrupt and replace sedentary time with stepping was feasible among and acceptable to older cancer survivors. Future studies are needed to evaluate the optimal approach for replacing sedentary behavior with standing and/or physical activity in this population. Trial Registration ClinicalTrials.gov NCT03632694; https://clinicaltrials.gov/ct2/show/NCT03632694
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Visschers, Vivianne HM, Rebecca Hess, and Michael Siegrist. "Health motivation and product design determine consumers’ visual attention to nutrition information on food products." Public Health Nutrition 13, no. 7 (January 26, 2010): 1099–106. http://dx.doi.org/10.1017/s1368980009993235.
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AbstractObjectiveIn the present study we investigated consumers’ visual attention to nutrition information on food products using an indirect instrument, an eye tracker. In addition, we looked at whether people with a health motivation focus on nutrition information on food products more than people with a taste motivation.DesignRespondents were instructed to choose one of five cereals for either the kindergarten (health motivation) or the student cafeteria (taste motivation). The eye tracker measured their visual attention during this task. Then respondents completed a short questionnaire.SettingLaboratory of the ETH Zurich, Switzerland.SubjectsVideos and questionnaires from thirty-two students (seventeen males; mean age 24·91 years) were analysed.ResultsRespondents with a health motivation viewed the nutrition information on the food products for longer and more often than respondents with a taste motivation. Health motivation also seemed to stimulate deeper processing of the nutrition information. The student cafeteria group focused primarily on the other information and did this for longer and more often than the health motivation group. Additionally, the package design affected participants’ nutrition information search.ConclusionsTwo factors appear to influence whether people pay attention to nutrition information on food products: their motivation and the product’s design. If the package design does not sufficiently facilitate the localization of nutrition information, health motivation can stimulate consumers to look for nutrition information so that they may make a more deliberate food choice.
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Caldani, Simona, Christophe-Loïc Gerard, Hugo Peyre, and Maria Pia Bucci. "Visual Attentional Training Improves Reading Capabilities in Children with Dyslexia: An Eye Tracker Study During a Reading Task." Brain Sciences 10, no. 8 (August 15, 2020): 558. http://dx.doi.org/10.3390/brainsci10080558.
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Dyslexia is a specific disorder in reading abilities. The aim of this study was to explore whether a short visual attentional training could improve reading capabilities in children with reading disorders by changing their oculomotor characteristics. Two groups (G1 and G2) of 25 children with reading disabilities and who are matched in IQ (intelligence quotient), sex, and age participated in the study. The allocation of a subject to a specific group (G1 = experimental group; G2 = control group) was generated in an unpredictable random sequence. The reading task was recorded twice for G1, i.e., before (T1) and after (T2) 10 min of visual attentional training. Training consisted of oculomotor tasks (saccades and pursuits movements) and searching tasks (three different exercises). For G2, the two reading tasks at T1 and T2 were done at an interval of 10 min instead. We found that at T1, oculomotor performances during reading were statistically similar for both groups of children with reading disabilities (G1 and G2). At T2, the group G1 only improved oculomotor capabilities significantly during reading; in particular, children read faster, and their fixation time was shortest. We conclude that short visual attentional training could improve the cortical mechanisms responsible for attention and reading capabilities. Further studies on a larger number of dyslexic children will be necessary in order to explore the effects of different training types on the visual attentional span given its important role on the orienting and focusing visuospatial attention and on the oculomotor performance in children with dyslexia.