Relevant bibliographies by topics / Wheelchair

Academic literature on the topic 'Wheelchair'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "Wheelchair"

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Muhammad Nur Iksan, Muhammad, and Anita Susilawati. "Design of a Multi-Functional Wheelchair Based Fuzzy Analytical Hierarchy Process." Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) 65, no. 1 (March 29, 2021): 8–13. http://dx.doi.org/10.36842/jomase.v65i1.229.

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Wheelchairs are tools for humans who experience illness, disabilities, and injuries that cause walking difficulties. There are many types of wheelchairs on the market, while wheelchairs that function to help users defecate flexibly have not been widely sold in the market. Therefore, it is necessary to develop a flexible and multifunctional wheelchair that can assist the users in carrying out their activities. This study aims to develop a design of the multifunctional wheelchair. The designing of multifunctional wheelchair based the FAHP (Fuzzy Analytical Hierarchy Process) method. The use of the FAHP was to select the optimal design and selection of the best alternatives among wheelchair’s indicators of design proposed. The results of calculation of weight values for wheelchair design were obtained a percentage of alternative 1 of 48% and alternative 2 of 52%.
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Chénier, Félix, and Rachid Aissaoui. "Effect of Wheelchair Frame Material on Users’ Mechanical Work and Transmitted Vibration." BioMed Research International 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/609369.

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Wheelchair propulsion exposes the user to a high risk of shoulder injury and to whole-body vibration that exceeds recommendations of ISO 2631-1:1997. Reducing the mechanical work required to travel a given distance (WN-WPM, weight-normalized work-per-meter) can help reduce the risk of shoulder injury, while reducing the vibration transmissibility (VT) of the wheelchair frame can reduce whole-body vibration. New materials such as titanium and carbon are used in today’s wheelchairs and are advertised to improve both parameters, but current knowledge on this matter is limited. In this study, WN-WPM and VT were measured simultaneously and compared between six folding wheelchairs (1 titanium, 1 carbon, and 4 aluminium). Ten able-bodied users propelled the six wheelchairs on three ground surfaces. Although no significant difference of WN-WPM was found between wheelchairsP<0.1, significant differences of VT were foundP<0.05. The carbon wheelchair had the lowest VT. Contrarily to current belief, the titanium wheelchair VT was similar to aluminium wheelchairs. A negative correlation between VT and WN-WPM was found, which means that reducing VT may be at the expense of increasing WN-WPM. Based on our results, use of carbon in wheelchair construction seems promising to reduce VT without increasing WN-WPM.
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Meng, Qiaoling, Mingpeng Jiang, Zongqi Jiao, and Hongliu Yu. "Bionic design and analysis of a multi-posture wheelchair." Mechanical Sciences 13, no. 1 (January 7, 2022): 1–13. http://dx.doi.org/10.5194/ms-13-1-2022.

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Abstract. Posture transformation is an essential function for multi-posture wheelchairs. To improve the natural motion in posture transformation that is a popular problem in the design of multi-posture wheelchairs because the current wheelchair's posture transformation mechanism cannot remain consistent between the rotation center of the wheelchair and the rotation center of the human body joints. This paper proposes a sitting–standing–lying three-posture bionic transformation mechanism for a smart wheelchair. A human–wheelchair coupling model is described and analyzed according to the biomechanical characteristics of the posture transformation of human beings and their functional requirements. The configuration of the transformation mechanism is chosen by comparing the trails of the wheelchair rotation centers and the corresponding human joint rotation centers. The kinematics of the optimized configuration are discussed in detail to obtain the most bionic motion performance using the multivariable nonlinear constraint optimization algorithm. Finally, the mechanism is designed, and its posture transformation performance is simulated and verified using Adams (Automatic Dynamic Analysis of Mechanical Systems) software.
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Jipp, Meike. "Individual Differences and Their Impact on the Safety and the Efficiency of Human-Wheelchair Systems." Human Factors: The Journal of the Human Factors and Ergonomics Society 54, no. 6 (April 25, 2012): 1075–86. http://dx.doi.org/10.1177/0018720812443826.

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Objective: The extent to which individual differences in fine motor abilities affect indoor safety and efficiency of human-wheelchair systems was examined. Background: To reduce the currently large number of indoor wheelchair accidents, assistance systems with a high level of automation were developed. It was proposed to adapt the wheelchair’s level of automation to the user’s ability to steer the device to avoid drawbacks of highly automated wheelchairs. The state of the art, however, lacks an empirical identification of those abilities. Method: A study with 23 participants is described. The participants drove through various sections of a course with a powered wheelchair. Repeatedly measured criteria were safety (numbers of collisions) and efficiency (times required for reaching goals). As covariates, the participants’ fine motor abilities were assessed. Results: A random coefficient modeling approach was conducted to analyze the data, which were available on two levels as course sections were nested within participants. The participants’ aiming, precision, and arm–hand speed contributed significantly to both criteria: Participants with lower fine motor abilities had more collisions and required more time for reaching goals. Conclusion: Adapting the wheelchair’s level of automation to these fine motor abilities can improve indoor safety and efficiency. In addition, the results highlight the need to further examine the impact of individual differences on the design of automation features for powered wheelchairs as well as other applications of automation. Application: The results facilitate the improvement of current wheelchair technology.
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Yasuda, Toshihiko, Hajime Tanaka, Kazushi Nakamura, and Katsuyuki Tanaka. "Adjustability of Neural Networks with Variant Connection Weights for Obstacle Avoidance in an Intelligent Wheelchair." Journal of Advanced Computational Intelligence and Intelligent Informatics 11, no. 8 (October 20, 2007): 922–30. http://dx.doi.org/10.20965/jaciii.2007.p0922.

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We have been studying electrically powered wheelchair operation to make electrically powered wheelchair intelligent and to develop a mobility aid for those who find it difficult or impossible to use conventional electrically powered wheelchairs. Some of the prototypes we have developed use neural networks providing obstacle avoidance. In previous research, we found that by varying neural network connection weight based on obstacles in the wheelchair’s vicinity and its run state, obstacle avoidance is improved. In this research, we discuss the adjustability of neural networks with variant connection weight based on numerical studies.
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Hryciów, Zdzisław. "The safety of wheelchair occupants in motor vehicles." Archives of Automotive Engineering – Archiwum Motoryzacji 97, no. 3 (October 5, 2022): 5–13. http://dx.doi.org/10.14669/am/155001.

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Ensuring the free movement of disabled people, including the use of vehicles, is a fundamental right. Therefore, efforts should be made to draw up standards regulating both organisational and technical aspects related to the construction and testing of wheelchairs. The main purpose of the paper is a review the literature related to wheelchair transport safety and the current standards for wheelchair crash testing Wheelchair users must securely and safely attach their wheelchair to the vehicle when travelling. The most common methods include securing with a four-belt system or using docking systems. Docking systems allow the disabled person to restrain the wheelchair themselves. Their main limitation is the lack of standardisation. Issues related to in-vehicle wheelchair design and testing are mainly described in international ISO standards and, in the US, in ANSI standards. Not all wheelchairs are crash tested. Before using wheelchairs, it should be checked if they can be mounted in a car. An important issue is education of wheelchair users and their carers on proper wheelchair securing. Even when wheelchairs are effectively secured, occupants in wheelchairs could be seriously and fatally injured because of improperly used and positioned belt restraints.
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Conceição Rocha de Oliveira, Paula, Luciana Ramos Baleotti, Gustavo Christofoletti, and Fausto Orsi Medola. "A study of wheelchair, movement and environmental factors associated with concerns about falls among wheelchairs users." Technology and Disability 35, no. 4 (December 27, 2023): 245–54. http://dx.doi.org/10.3233/tad-230004.

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BACKGROUND: Falls when using wheelchairs can have serious consequences for users. OBJECTIVE: The aim of this study was to investigate wheelchair types, daily movement and environmental factors associated with concerns about falls among wheelchair users. METHODS: Fifty-two wheelchair users (36 male and 16 female, mean age of 44.3 ± 10 years) were interviewed online and responded to questions about the characteristics of their wheelchair, their experiences and concerns about falling while using their wheelchair. RESULTS: It was found that the highest levels of concern about falling when using wheelchairs were associated with the use of rigid frame wheelchairs; and with activities such as moving on sidewalks and ramps. Half of the sample reported that they did not receive training on wheelchair usage and had concerns about performing wheelie maneuvers. Reported falls caused by wheelchair failure were associated with increased concerns about falls. CONCLUSIONS: The findings of this study suggest that wheelchair type, daily movements and environments all influence wheelchair users’ concerns about falls.
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Yang, Laijun, Nan Guo, Ryota Sakamoto, Norihiko Kato, and Ken’ichi Yano. "Electric Wheelchair Hybrid Operating System Coordinated with Working Range of a Robotic Arm." Journal of Robotics and Control (JRC) 3, no. 5 (September 1, 2022): 679–89. http://dx.doi.org/10.18196/jrc.v3i5.15944.

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Electric wheelchair-mounted robotic arms can help patients with disabilities to perform their activities in daily living (ADL). Joysticks or keypads are commonly used as the operating interface of Wheelchair-mounted robotic arms. Under different scenarios, some patients with upper limb disabilities such as finger contracture cannot operate such interfaces smoothly. Recently, manual interfaces for different symptoms to operate the wheelchair-mounted robotic arms are being developed. However, the stop the wheelchairs in an appropriate position for the robotic arm grasping task is still not easy. To reduce the individual’s burden in operating wheelchair in narrow spaces and to ensure that the chair always stops within the working range of a robotic arm, we propose here an operating system for an electric wheelchair that can automatically drive itself to within the working range of a robotic arm by capturing the position of an AR marker via a chair-mounted camera. Meanwhile, the system includes an error correction model to correct the wheelchair’s moving error. Finally, we demonstrate the effectiveness of the proposed system by running the wheelchair and simulating the robotic arm through several courses.
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Gowran, Rosemary Joan, Nathan Bray, Mary Goldberg, Paula Rushton, Marie Barhouche Abou Saab, David Constantine, Ritu Ghosh, and Jonathan Pearlman. "Understanding the Global Challenges to Accessing Appropriate Wheelchairs: Position Paper." International Journal of Environmental Research and Public Health 18, no. 7 (March 24, 2021): 3338. http://dx.doi.org/10.3390/ijerph18073338.

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Introduction: Appropriate wheelchairs are often essential for the health and wellbeing of people with mobility impairments to enhance fundamental freedoms and equal opportunity. To date, provision has mainly focused on just delivering the wheelchair instead of following an evidence-based wheelchair service delivery process. In addition, many governments have not committed to a national wheelchair provision policy. Approach: To prepare this position paper, a systemic development model, founded on the sustainable human security paradigm, was employed to explore the global challenges to accessing appropriate wheelchairs. Positions: I: Consideration of key perspectives of wheelchair provision across the life course is essential to meet the needs to children, adults, older people and their families; II: Comprehensive wheelchair service delivery processes and a competent workforce are essential to ensure appropriate wheelchair service provision; III: Evaluations on wheelchair product quality development, performance and procurement standards are key as wheelchair product quality is generally poor; IV: Understanding the economic landscape when providing wheelchairs is critical. Wheelchair funding systems vary across jurisdictions; V: Establishing wheelchair provision policy is a key priority, as specific policy is limited globally. Conclusion: The vision is to take positive action to develop appropriate and sustainable wheelchair service provision systems globally, for me, for you, for us.
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Wang, Yong Tai, Randy Bernard, Clint Cope, Li-Shan Chang, Weerawat Limroongreungrat, and Stephen Sprigle. "Fundamental Locomotive Activity Time Efficiency with Differently Positioning Drive-Axis Wheelchairs Among Elders." Adapted Physical Activity Quarterly 25, no. 4 (October 2008): 322–34. http://dx.doi.org/10.1123/apaq.25.4.322.

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This study examined time efficiency in wheelchair locomotive activities among four different wheelchairs propelled by elders with arms and/or legs. Sixteen elder manual wheelchair users propelled her/his own wheelchair and three wheelchairs (the main drive-axis wheels positioning in front, middle, and rear, respectively) in the test of seven wheelchair locomotive activities of daily living. A Mixed-Model ANOVA and Bonferroni post hoc test (p < .05) were employed to determine the time efficiency among four wheelchairs and three groups. The results demonstrated better time efficiency resulted from propelling the mid drive-axis and/or rear drive-axis wheelchairs; using arms and legs simultaneously propelling wheelchairs was more time efficient than using the arms or legs only in the selected locomotive activities.
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Dissertations / Theses on the topic "Wheelchair"

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Li, Yiran. "Height adjustable wheelchair seat design." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44767.

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Full time wheelchair users are at a height disadvantage during many function activities, such as transferring or reaching. Retrieving objects from the ground or a higher shelf while seated in the wheelchair can be both difficult and unsafe. Lateral transfers between surfaces at different heights can be difficult and unsafe. Sit-to-stand transfers are made simpler with a higher seat. This research project seeks to assist reach and transfers by designing a system to raise and lower a wheelchair seat over a 4'' range. The project included several needs assessment: 1) by conducting interviews and surveys, identify design needs from different stakeholder groups; 2) analysis of stakeholder groups' feedback and synthesis into design criteria; and 3) creation of design concepts for the adjustable height wheelchair seat; 4) evaluation of the design by setting up heuristic evaluation criteria and perform user testing; 5) design revision design based on user's performance and feedback. The design process included fabricating and testing of various concepts, validating design through user testing, and addresses technology transfer of the device.
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Svensson, Niklas, and Anna Kowalska. "Development of a Wheelchair loading device : For manual wheelchairs." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-44881.

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With an increasing globalization, companies are forced to develop new products. That is why product development process is successfully used in companies all over the world. The main reason is to stay ahead of the competitors and continually improve the products to more competitive prices.The number of wheelchair users is continually increasing all over the world and the same increase occurs in Sweden. For this reason the Swedish social board stated The Swedish disability policy, which aim is to minimalize differences between people with disabilities and people without. One part, which is emphasized, is transportation. To reach independence, the possibility to drive a car and bring the wheelchair without assistance is of vital importance.This thesis consists of two main parts – theory and its application. The first part is mainly theory regarding a systematic engineering process as well as a part based on empirical research. It contains information related to the topic of the thesis, which are gathered through observation and interviews rather than acknowledged facts. The second one is the implementation of the theory during development of a wheelchair loading device, which are based on customer requirements.
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Couture, Eric Daniel. "The design and manufacture of an elevating/articulating manual wheelchair legrest." Worcester, Mass. : Worcester Polytechnic Institute, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-050306-151613/.

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Helin, Emil. "Botswanan Wheelchair." Thesis, KTH, Maskinkonstruktion (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168725.

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In April 2010 a collaboration of three years started between the foundation Spinalis and theministry of health in Botswana to create permanent resources to treat persons with spinal cordinjuries in Botswana. The work started immediately at the biggest hospital in Botswana locatedin the capital city Gaborone. They notice early that help was needed. Doctors and nurses hadinadequate knowledge about spinal core injures and what it implicates and also access to aidwhere defective. Patients where left in their bed because the doctors didn’t know what to do withthem. When they were sent home the patient still had problems to move which made most ofthem stuck in bed. The mortality ratio was very high during the first year after leaving hospital.Many of them died of infected pressure sores. Most patient didn’t know how to turn around inbed to depressurize the sores by them selves and where depending on people around them.This problem where one of the first the Spinalis foundation helped to solve in Botswana. Theyshowed how patients could learn how to turn around in bed by their own. It resulted in lowernumber of pressure sore and differences where notable on the mortality ratio for patients duringtheir first year at home. By providing patients with aid and knowledge Spinals showed how aspinal core injured person can start live active and healthy. One of the most important aid for aspinal cord injured person is a wheelchair. With a wheelchair people who have difficulties towalk can start moving around by them self, independently, and have a possibility to live anactive healthy life. Unfortunately Spinals had problems to provide their patients with properwheelchairs. They had to import wheelchairs from other parts of the world, which was costly andtime consuming. Spinalis had to relay on donations from other organizations and foundations.Donations are frequently made from developed countries and may appear to be an appropriatestrategy to handle the situation. Donations often cause more problems then solutions. Donatedwheelchairs are often used and are at the end of their useful life and are design to deal with othertypes of environments which often causes mechanical problems. It is often very expensive ifeven possible to obtain replacement parts. Donations also have been reported to have a badimpact on local wheelchair companies. When donations arrive to a community, the local storegets out of business. Later when the donated wheelchairs reach their end of life the localbusinesses have shut down and it gets hard find wheelchairs to supply people that need them.This project aims to solve this problem by develop a concept of a wheelchair which is adaptedfor rough terrain and can be produced locally in Botswana. Hopefully this will make a properwheelchair available for a reasonable price and possibly also contribute to more jobs andeconomic growth in Botswana.The final wheelchair concept this project resulted in has a simple design with simple joints andangels that make it easy and sheep to manufacture. The simple and neat design requires only afew tools when it is manufactured. Parts selected for the wheelchair cost in total 250USD, whichcan be considered to be low for an active wheelchair. The wheelchair is equipped with a longwheelbase and camber angel will allow the user to be active in the wheelchair and use it in thesemi-rough environment it will be exposed to.
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HECKEL, PAMELA FUNDERBURG. "BEYOND THE WHEELCHAIR." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1068666912.

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Walker, Linda Ann. "Accepting wheelchair use." Thesis, University of Brighton, 2013. https://research.brighton.ac.uk/en/studentTheses/933b5a83-d0b4-40a0-abff-526fcc10888f.

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Statutory wheelchair provision in England and Wales has been equipment led since its inception in 1990. However, users are reported to be dissatisfied with the service and a reorganisation of provision is underway that purports, in accordance with recent Government advice (DOH, 2012), to make the wheelchair user central to the supply process. However, little is known about wheelchair users perspectives of the equipment that they use to inform this process.
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Quade, Michael. "Design and Construction of a Wheelchair Tray for Rigid Wheelchair Users." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250609866.

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Ndosi, Aston. "Locally manufactured wheelchairs in Tanzania : Do they meet the needs of Tanzanian wheelchair users?" Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13979.

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Access to suitable wheelchairs may seriously impact the ability of people with physical disabilities to integrate into regular community life. The overall aim of this study was to determine the extent to which the needs of users of wheelchairs manufactured locally in Tanzanian are met. The specific objectives of the study were to determine users' satisfaction with the wheelchairs manufactured in Tanzania, their satisfaction with services associated with the provision, repair and maintenance of these wheelchairs, and the extent to which these wheelchairs enabled them to carry out their daily activities. A quantitative descriptive cross-sectional study was carried out among 75 users of locally manufactured manual wheelchairs, aged 18-65 years and residing in Dar es Salaam, Arusha and the Kilimanjaro regions of Tanzania. Data was collected using a questionnaire consisting of demographic items and two existing instruments, the Functioning Everyday with a Wheelchair (FEW) and Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST) 2.0. Data were analysed with the Statistical Package for the Social Sciences (SPSS) software program version 20.0. Descriptive analysis was performed using frequencies and proportions for categorical data or median and ranges for numerical data. The chi-square test was conducted to determine whether there were significant difference between gender and place of residence (rural/urban) and satisfaction with functional needs, wheelchair and activity and participation.
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Nilsson, Rebecca, and de Val Almida Winquist. "Hand Gesture Controlled Wheelchair." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264512.

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Haptical technology is a field that is under constant development and that exists in many of today’s products, for example in VR-games and in the controls for vehicles. This kind of technology could in the same way simplify for disabled people by their being able to control a wheelchair using hand gestures. The purpose of this project is to research if a wheelchair can be controlled with hand gestures, and in that case, in which way that would be the most optimal. To answer the research questions in the project, a small scale prototype wheelchair was developed. This prototype is based on a microcontroller, Arduino, that is controlled by a sensor, IMU, that reads the angle of the user’s hand. Together, the components control two motors and steer the wheelchair. The result shows how hand gestures can steer the wheelchair forward, backward, left and right under constant speed, as well as making it stop. The prototype is able to follow the movements of the user’s hand, but reacts more slowly than would be desirable in a real situation. In spite of the fact that there are many different aspects to haptical steering of a wheelchair, this project shows that there is a large potential in implementing this kind of technology in an actual wheelchair.
Haptiskt styrning är en teknologi som utvecklas snabbt och inkorporeras i många av dagens produkter, till exempel i allt från VR-spel till styrning av fordon. På samma sätt skulle denna teknologi kunna underlätta för rörelsehindrade genom att erbjuda styrning av rullstol med hjälp av handrörelser. Syftet med detta projekt var därför att undersöka om en rullstol kan styras med handrörelser och i så fall vilket sätt som är optimalt. För att besvara rapportens frågeställning har framtagningen av en prototyp av en rullstol i liten skala gjorts. Denna är baserad på en mikrodator, Arduino, som styrs av en sensor, IMU, som mäter vinkeln på användarens hand. Med hjälp av dessa kan motorerna styras och rullstolen manövreras. Resultatet av rapporten har lett till ett förslag på hur handrörelser kan styra rullstolen framåt, bakåt, till vänster och till höger under konstant fart samt få den att stanna. Protypen följer gesterna som användarens hand visar, men reagerar långsammare än vad som vore önskvärt i verkligheten. Trots att många utvecklingsmöjligheter kvarstår för haptisk styrning av en rullstol, visar detta arbete att det finns stor potential i att implementera denna teknik med handrörelsestyrning i en verklig rullstol.
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Edlund, Andreas. "Navigation for Autonomous Wheelchair Robot." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2475.

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The problem with motorized wheelchairs is that they are large, clumsy and difficult to control. This is especially true if the driver has severely reduced capabilities. What we want is a wheelchair that can take instructionsfrom the driver and then based on its understanding of the environment, construct a plan that will take the user to the intended destination. The user should be able to sit in a room, tell the wheelchair that he wants to be in another room and the wheelchair should take him there as quickly and smoothly as possible.

The planner presented in this thesis uses a randomized bi-directional tree search. It builds two trees, one from the start state and one from the goal state by randomly sampling the control space of the robot. Each node is a state and each edge is a control input to the robot.

In order to decrease the execution time and improve path quality, the planner uses several heuristics to guide the planner. The heuristics are based on Rapidly-exploring Random Trees, Probabilistic Road-maps and the gradient method.

For a normal household situation, this planner can construct a decent plan in mere seconds on relatively slow hardware. Most times it finishes in a fraction of a second.

This means that the planner has the ability to run in real-time. As a consequence, the planner can handle a dynamic environment, inaccurate sensor readings and an inaccurate physical robot model.

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Books on the topic "Wheelchair"

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Therapists, College of Occupational. Wheelchairs: Wheelchair training resource pack 1996 amendments & revisions. Southwark: College of Occupational Therapists, 1996.

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1971-, Goosey-Tolfrey Vicky, ed. Wheelchair sport. Champaign, Ill: Human Kinetics, 2010.

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1952-, Byrnes Dan, and Shaver Lew, eds. Wheelchair basketball. Washington, D.C: Paralyzed Veterans of America, 1989.

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Hedrick, Brad. Wheelchair basketball. 2nd ed. Washington, DC: Paralyzed Veterans of America, 1994.

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James, Tom. Wheelchair ponies. Minneapolis: BRMS Publications, 2008.

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Environments, Centre for Accessible, ed. [Wheelchair template]. London: Centre for Accessible Environments, 2000.

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McMillan, Dawn. Wheelchair racing. Orlando, Florida: Rigby, 2013.

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wheelchair selection and configuration Wheelchair selection and configuration. New York: Demos, 1998.

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Weyers, Janet. Wheelchairs and their use: A guide to choosing a wheelchair. London: Royal Association for Disability and Rehabilitation, 1986.

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Jay, Peggy. Wheelchair cushions: Summaryreport. (London): (Department of Health and Social Security), 1986.

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Book chapters on the topic "Wheelchair"

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Freddi, Alessandro, Catia Giaconi, Sabrina Iarlori, Sauro Longhi, Andrea Monteriù, and Daniele Proietti Pagnotta. "Assistive Robot for Mobility Enhancement of Impaired Students for Barrier-Free Education: A Proof of Concept." In Makers at School, Educational Robotics and Innovative Learning Environments, 333–38. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77040-2_44.

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AbstractSmart wheelchairs are in the category of assistive robots, which interact physically and/or non-physically with people with physical disabilities to extend their autonomy. Smart wheelchairs are assistive robots that enhance mobility, and can be especially useful for improving access to university premises. This paper proposes a smart wheelchair that can be integrated with an academic management system to enable students who have serious leg problems and cannot walk on their own to reach any academic building or room on a university campus autonomously. The proposed smart wheelchair receives information from the academic management system about the spaces on campus, the lesson schedule, the office hours of lecturers, and so on. Students can select the desired task from the user interface. The smart wheelchair can then guide the student autonomously to the desired point of interest, while planning the best barrier-free route inside the campus/building and, simultaneously, avoiding fixed and moving obstacles. The assistive robot has localization and navigation capabilities, which allow students to move about campus freely and autonomously, and benefit from a barrier-free education.
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Chen, James L., and Adam Chen. "Wheelchair Astronomy." In The Patrick Moore Practical Astronomy Series, 135–42. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52413-9_10.

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Mathur, Rajat, Patrick Martone, and Arthur Jason De Luigi. "Wheelchair Basketball." In Adaptive Sports Medicine, 123–34. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56568-2_12.

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Irwin, David M., Monica K. Zillen, and Arthur Jason De Luigi. "Wheelchair Rugby." In Adaptive Sports Medicine, 135–47. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56568-2_13.

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Blatz, Daniel H., and Craig Ziegler. "Wheelchair Softball." In Adaptive Sports Medicine, 161–70. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56568-2_15.

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Caldwell, Mary, and Arthur Jason De Luigi. "Wheelchair Fencing." In Adaptive Sports Medicine, 181–89. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56568-2_17.

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Caldwell, Mary, and Arthur Jason De Luigi. "Wheelchair Curling." In Adaptive Sports Medicine, 191–200. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56568-2_18.

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Baker, Ed. "Wheelchair Rugby." In Routledge Handbook of Strength and Conditioning, 311–30. Abingdon, Oxon ; New York, NY : Routledge, 2018. | Series: Routledge international handbooks: Routledge, 2018. http://dx.doi.org/10.4324/9781315542393-18.

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Villiere, Alex, Michael Edwards, Baldip Sahota, and Anthony Turner. "Wheelchair Fencing." In Routledge Handbook of Strength and Conditioning, 413–32. Abingdon, Oxon ; New York, NY : Routledge, 2018. | Series: Routledge international handbooks: Routledge, 2018. http://dx.doi.org/10.4324/9781315542393-24.

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Thompson, Miles, and Haj Bhania. "Wheelchair basketball." In THE Science of Basketball, 101–26. First edition. | New York : Routledge, 2018.: Routledge, 2018. http://dx.doi.org/10.4324/9781315204000-5.

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Conference papers on the topic "Wheelchair"

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Miller, Christopher, Kelilah Wolkowicz, Jariullah Safi, and Sean N. Brennan. "State of Charge Estimation for an Electric Wheelchair Using a Fuel Gauge Model." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9802.

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Electric wheelchair users depend on a reliable power system in order to regain mobility in their daily lives. If a wheelchair’s battery power depletes without the user being aware, the individual may become stranded, further limiting their freedom of mobility and potentially placing the user in a harmful situation. This research seeks to develop a State-of-Charge (SOC) estimator for the batteries of an electric wheelchair. A second-order equivalent circuit battery model is developed and parameterized for a wheelchair’s lead-acid battery pack. To simplify the SOC estimation, this algorithm models a vehicle’s fuel gauge. A coulomb accumulator is incorporated to estimate energy usage in the non-linear region of the OCV-SOC curve, while a Kalman filter is used to estimate SOC in the linear region of the curve. The estimator is verified using experimentally collected data on-board a robotic wheelchair. The implementation of these algorithms with powered wheelchairs can significantly improve the estimation of wheelchair battery power and can ultimately be coupled with warning systems to alert users of depleting battery life, as well as enable low-power modes to increase wheelchair user safety.
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O. Medola, Fausto, Suzana Gamac, Valeria M.C.Eluic, Luis C. Paschoarelliab, and Carlos A. Fortuland. "Users’ Perceptions on Mobility, Comfort and Usability of Manual Wheelchairs." In Applied Human Factors and Ergonomics Conference. AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001337.

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The objective of this study was to assess the users’ perceptions on the extent to which the wheelchair meet their mobility needs and overall satisfaction. Fifteen manual wheelchair users were interviewed with a questionnaire comprising questions about their perceptions on aspects of the daily wheelchair usage such as comfort and mobility. The results show that, in general, users experience seating and mobility problems related to their wheelchair. Participants reported problems to move independently in ramps, steps and with wheelchair transfers. Moreover, discomfort and pain were also reported as problems resulting from the prolonged use of wheelchairs. For the majority of the subjects, their wheelchairs are not ideally suitable to them, suggesting problems in the wheelchair prescription and provision. The results demonstrate that, from the users’ point of view, both mobility and comfort problems affect users’ experience with the wheelchair in daily usage. Such problems evidence the existing problems with the current design of manual wheelchairs. Designers and manufacturers may benefit from this knowledge when designing and producing wheelchairs that are most suitable to users’ characteristics, needs and expectations.
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Hill, Daniel C., and Beth A. Todd. "Universal Attachment for the Wheeling Striker." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192694.

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Seeking to improve the quality of life for a disabled child, Stephen Horne of Birmingham, AL, designed and built a device to allow a person in a wheelchair to bowl. Although wheelchair bowling is not a new concept, Stephen’s Wheeling Striker was anything but common. Unlike similar devices, the Wheeling Striker provides the bowler a more independent bowling experience. The simple u-shaped device allows more control over the ball, yielding a more fulfilling and independent method of participating in the sports arena. The Wheeling Striker, however, was originally designed for one style wheelchair. This presented a need to make the device applicable for all wheelchairs. Because wheelchairs vary in size and configuration, designing a device that is capable of attaching to most wheelchairs is complex. The design of the universal attachment could not compromise the capability of the Wheeling Striker, the function of the wheelchair, or the safe operation of the wheelchair. The result was a universal attachment engineered to adapt to any wheelchair configuration and allow the Wheeling Striker to be a safe and effective bowling aid for the disabled.
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Garza, Allison N., Joseph L. Song, Gloria R. Gogola, Ann Saterbak, Matthew A. Wettergreen, and Brent C. Houchens. "Mechanical Wheelchair Propulsion System for Patients With Arthrogryposis." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88987.

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Arthrogryposis is a congenital disorder characterized by extreme joint stiffness that inhibits strength and flexibility in upper and lower extremities. Cases vary in severity, but this research focuses on those in which patients require a wheelchair for mobility. Currently, two conventional designs exist: mechanical and electric wheelchairs. For most arthrogryposis patients, existing mechanical wheelchairs are insufficient for independent propulsion as their joints are severely impaired, prohibiting them from reaching the outer handrails on the wheels and expending enough force to propel and steer. Existing devices that improve the mechanical advantage of wheelchairs are insufficient for the needs of these patients who have very limited and specific ranges of motions, which are not compatible with the required force inputs. Though electric wheelchairs allow independent mobility, they are expensive to maintain and not easily portable, limiting their use by socioeconomically disadvantaged patients. Arthrogryposis patients require a lightweight, portable and durable mechanical wheelchair that takes advantage of the user’s specific strengths, and is easily maneuvered in all directions without assistance. A design is presented for a socioeconomically disadvantaged teenage client with arthrogryposis. After taking data regarding the ranges of motion and strength of the client, a new propulsion system was designed and retrofitted to a conventional wheelchair. Prototye I has been tested and a second-generation design which fits the needs of a wider audience suffering from arthrogryposis is presented.
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Yilmazcoban, Ibrahim K., Osman Iyibilgin, and Abdullah Mimaroglu. "Robustness of Wheelchairs Under Direct Frontal Impact Loading Conditions." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24132.

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In this study, the robustness of five different commercial type wheelchairs under direct frontal impact loadings were modeled, examined and compared. Wheelchairs were modeled, simulated and analyzed under direct frontal impact process using ANSYS/LS-DYNA software. The stresses, strains and displacements of deformed shapes were obtained and compared. The results showed that, “Wheelchair Chassis 4” is the most economic and robust design. Finally the chosen wheelchair design was modified and developed and its robustness was examined.
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Štefanac, S., I. Grabovac, and S. Fristedt. "Wheelchair users satisfaction with the prescribed wheelchairs and wheelchair services in Croatia." In 23. wissenschaftliche Tagung der Österreichischen Gesellschaft für Public Health (ÖGPH). © Georg Thieme Verlag KG, 2020. http://dx.doi.org/10.1055/s-0040-1709003.

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Desai, Sumit, Shankar Mantha, Vikas Phalle, Sangram Patil, and Vishwadeep Handikherkar. "Design and Prototype Development of a Reconfigurable Wheelchair With Stand-Sit-Sleep Configurations." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87905.

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Many lower limb disabled, elderly subjects prefer wheelchairs as mobility devices. Transferring such subjects from the wheelchair to and from the bed/toilet seat is one everyday challenge. Caregivers provide manual transfer support to such subjects which increase their caregiver dependence. Lower back pains of caregivers, injury incidences during transfer support are related issues regarding manual caregiver transfer support. Long-time wheelchair users are generally exposed to many health problems associated with idle seated posture in a wheelchair for a long time. The wheelchair with a standing facility allows the user to be able to adjust him to different heights giving enhanced navigations in different situations. Thus, reconfigurable wheelchair built-in with sit-to-stand and sit-to-sleep capabilities can be a handy assistive device for a long time wheelchair users. Thus, the paper presents the design and development of a reconfigurable wheelchair with stand-sit-sleep configurations. Key areas focused on maximizing safety, optimizing the size with minimizing the cost and weight of the wheelchair. The developed model will help in improving the functional capabilities of wheelchair users allowing enhanced independence and quality of life (QoL).
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Wolkowicz, Kelilah, Jesse Pentzer, Christopher Miller, Jason Z. Moore, and Sean N. Brennan. "On-Line Estimation of Wheelchair Tire Slip Utilizing an Instantaneous Center of Rotation Extended Kalman Filter." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9699.

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There are over three million wheelchair users within the United States and that number is growing. This paper is concerned with improving the safety of wheelchair operation by the on-line estimation of tire slip. Wheelchair tire slip is a result of icy or low friction surfaces, often representative of dangerous conditions. In this research, wheel slip is detected by estimating the instantaneous center of rotation (ICR) locations of wheelchair wheels relative to the ground surface. Any departure of the estimated ICR positions from the wheel contact point indicates slippage is occurring. An Extended Kalman Filter (EKF) algorithm uses inputs of position and orientation obtained via map-based localization to detect changes in wheelchair ICR location estimates. The ICR EKF algorithm is verified in simulation. A robotic wheelchair is used for testing the presented algorithms under conditions inducing tire slip. The results show that the ICR locations do not vary significantly when the wheelchair is operated under normal conditions, i.e. low slip surfaces; however, they change significantly under slip conditions. Implementing this method with electric wheelchairs can improve the prediction of wheelchair motion on slippery surfaces, enabling warning systems and safe operational modes that can enhance the safety of wheelchair users.
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Fujisawa, Shoichiro, Jyunji Kawata, Jiro Morimoto, Yoshio Kaji, Mineo Higuchi, and Masayuki Booka. "Relationship between tire pressure and ride comfort of manually self-propelled wheelchairs." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001654.

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Along with the assisted wheelchair, a self-propelled wheelchair is also used as an assisted wheelchair by a caregiver; however, the problem with wheelchairs is that the vibration during driving causes motion sickness, discomfort, and annoyance for users. The tire pressure of the wheelchair is considered an influencing factor affecting the ride quality of the wheelchair; however, the extent of the effects of tire pressure on the wheelchair remains unknown. Therefore, this study aimed to evaluate the factors influencing the tire pressure changes of the self-propelled wheelchair on the vibration using the tire pressure indicator. Furthermore, this experiment aimed to improve data reliability by manufacturing a device that pushes out a self-propelled wheelchair using an electric wheelchair to run the self-propelled wheelchair at a constant speed. A dummy heavy object was placed on the seat of the self-propelled wheelchair of the vibration measuring device manufactured in this experiment, and a triaxial accelerometer was mounted on it. Moreover, an electric wheelchair is used to drive the uneven road surface at a constant speed at regular intervals. The tire pressure display manufactured in this study was attached to both sides of the rear wheel of the self-propelled wheelchair, and a dummy weight of 50 kg was placed on the seat. Then, acceleration in the vertical direction is measured by a three-axis accelerometer mounted on a heavy object. In this study, the effects of tire pressure on ride quality were considered by looking at the correlation between ride quality by sensory evaluation and vibration analysis.
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Suzuki, Tatsuto, Hironobu Uchiyama, Junichi Kurata, and Kenneth T. V. Grattan. "Investigating the Propelling Wheelchair Behavior Against Various Loads." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61439.

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The purpose of this study is to solve an attendant’s daily propelling wheelchair behavior, which is based on propelling force and walking speed against loads, for design of wheelchairs and other carts to handle materials. To obtain the propelling behavior, we proposed the model of the attendant propelling the wheelchair, such as the attendant is a motor, and the wheelchair is a load. Along with the model, we carried out experiments to solve the propelling behavior. The experiments were carried out on the ground and on a new type of a treadmill, which can generate various resistant forces. As the result, the propelling force increased and the walking speed decreased gradually with increasing the resistant force. This change is mostly along on a line. We also define a mechanical power of the propelling behavior and calculated the power. It was about 50W on daily use. The power of the propelling wheelchair is very small, therefore the comfortable design of attendant’s wheelchair must be done with the ability of attendant’s propelling.
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Reports on the topic "Wheelchair"

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Heron, Neil, and Sam McCormick. The Physical Demands of Wheelchair Tennis - a Systematic Review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, March 2023. http://dx.doi.org/10.37766/inplasy2023.3.0060.

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Review question / Objective: Our aim was to describe and synthesise the physical demands of wheelchair tennis. We reviewed the data across different playing surfaces, performance levels and sex of tennis players. Eligibility criteria: Studies had to meet the criteria below to be included in the review:i. The paper reported on participants playing singles or doubles wheelchair tennis matches (all ages, performance levels, quad or open category and court surfaces).ii. The data collected was related to the duration of play (e.g. length of match, effective playing time), on-court movement characteristics (e.g. distance covered, moving speed, accelerations), stroke characteristics (e.g. first serve %, count, frequency) or physiological response to match play (e.g. heart rate, oxygen uptake, energy expenditure) of wheelchair tennis.
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Mayi, Dieudonne. An intelligent database for PSUBOT, an autonomous wheelchair. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6216.

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Aihara, Shimpei, Ryusei Shibata, Ryosuke Mizukami, Takara Sakai, and Akira Shionoya. Electromyograph Estimation of Wheelchair Operators Using Deep Learning. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317554.

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Jin, Heejae, and Kathy Mullet. A design framework for the development of sportswear for wheelchair users. Ames: Iowa State University, Digital Repository, 2013. http://dx.doi.org/10.31274/itaa_proceedings-180814-854.

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Jin, Heejae, and Kathy Mullet. Analysis of body movements for development of male wheelchair tennis shirt. Ames: Iowa State University, Digital Repository, 2013. http://dx.doi.org/10.31274/itaa_proceedings-180814-460.

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Bettella, Francesco, Biagio Beneduce, Mario Poletti, and Nicola Petrone. Analysis of wheelchair sprint biomechanics on two elite athletes on an instrumented drum ergometer. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317523.

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Aihara, Shimpei, Takara Saki, Tyusei Shibata, Toshiaki Matsubara, Ryosuke Mizukami, Yudai Yoshida, and Akira Shionoya. Deep Learning Model for Integrated Estimation of Wheelchair and Human Poses Using Camera Images. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317545.

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Starkey, Sandra, and Jean L. Parsons. Promoting Universal Design: A Pilot Study of Wheelchair User Needs Using the Inclusive Design Framework. Ames: Iowa State University, Digital Repository, 2013. http://dx.doi.org/10.31274/itaa_proceedings-180814-475.

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Selph, Shelly S., Andrea C. Skelly, Ngoc Wasson, Joseph R. Dettori, Erika D. Brodt, Erik Ensrud, Diane Elliot, et al. Physical Activity and the Health of Wheelchair Users: A Systematic Review in Multiple Sclerosis, Cerebral Palsy, and Spinal Cord Injury. Agency for Healthcare Research and Quality (AHRQ), October 2021. http://dx.doi.org/10.23970/ahrqepccer241.

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Objectives. Although the health benefits of physical activity are well described for the general population, less is known about the benefits and harms of physical activity in people dependent upon, partially dependent upon, or at risk for needing a wheelchair. This systematic review summarizes the evidence for physical activity in people with multiple sclerosis, cerebral palsy, and spinal cord injury regardless of current use or nonuse of a wheelchair. Data sources. We searched MEDLINE®, CINAHL®, PsycINFO®, Cochrane CENTRAL, Embase®, and Rehabilitation and Sports Medicine Source from 2008 through November 2020, reference lists, and clinical trial registries. Review methods. Predefined criteria were used to select randomized controlled trials, quasiexperimental nonrandomized trials, and cohort studies that addressed the benefits and harms of observed physical activity (at least 10 sessions on 10 different days of movement using more energy than rest) in participants with multiple sclerosis, cerebral palsy, and spinal cord injury. Individual study quality (risk of bias) and the strength of bodies of evidence for key outcomes were assessed using prespecified methods. Dual review procedures were used. Effects were analyzed by etiology of impairment and physical activity modality, such as treadmill, aquatic exercises, and yoga, using qualitative, and when appropriate, quantitative synthesis using random effects meta-analyses. Results. We included 146 randomized controlled trials, 15 quasiexperimental nonrandomized trials, and 7 cohort studies (168 studies in 197 publications). More studies enrolled participants with multiple sclerosis (44%) than other conditions, followed by cerebral palsy (38%) and spinal cord injury (18%). Most studies were rated fair quality (moderate risk of bias). The majority of the evidence was rated low strength. • In participants with multiple sclerosis, walking ability may be improved with treadmill training and multimodal exercise regimens that include strength training; function may be improved with treadmill training, balance exercises, and motion gaming; balance is likely improved with postural control exercises (which may also reduce risk of falls) and may be improved with aquatic exercises, robot-assisted gait training, treadmill training, motion gaming, and multimodal exercises; activities of daily living may be improved with aquatic therapy; sleep may be improved with aerobic exercises; aerobic fitness may be improved with multimodal exercises; and female sexual function may be improved with aquatic exercise. • In participants with cerebral palsy, balance may be improved with hippotherapy and motion gaming, and function may be improved with cycling, treadmill training, and hippotherapy. • In participants with spinal cord injury, evidence suggested that activities of daily living may be improved with robot-assisted gait training. • When randomized controlled trials were pooled across types of exercise, physical activity interventions were found to improve walking in multiple sclerosis and likely improve balance and depression in multiple sclerosis. Physical activity may improve function and aerobic fitness in people with cerebral palsy or spinal cord injury. When studies of populations with multiple sclerosis and cerebral palsy were combined, evidence indicated dance may improve function. • Evidence on long-term health outcomes was not found for any analysis groups. For intermediate outcomes such as blood pressure, lipid profile, and blood glucose, there was insufficient evidence from which to draw conclusions. There was inadequate reporting of adverse events in many trials. Conclusions. Physical activity was associated with improvements in walking ability, general function, balance (including fall risk), depression, sleep, activities of daily living, female sexual function, and aerobic capacity, depending on population enrolled and type of exercise utilized. No studies reported long-term cardiovascular or metabolic disease health outcomes. Future trials could alter these findings; further research is needed to examine health outcomes, and to understand the magnitude and clinical importance of benefits seen in intermediate outcomes.
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Fitzgerald, Shirley G., R. A. Cooper, B. Dicianno, D. Collins, E. Teodorski, A. Karmarkar, M. Sporner, P. Pasquina, T. Wichman, and A. Franklin. Impact of Physical Activity on Participation and Quality of Life in Individuals who use Prostheses and other Assistive Technology/Lower Extremity Prostheses versus Wheelchair for Functional Performance and Participation of Military and Veteran Personnel. Fort Belvoir, VA: Defense Technical Information Center, March 2007. http://dx.doi.org/10.21236/ada574353.

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