Artykuły w czasopismach: „Walking gait”

1

Coleman, Nailah. "Unsteady Gait - Walking". Medicine & Science in Sports & Exercise 47 (maj 2015): 20. http://dx.doi.org/10.1249/01.mss.0000476447.71387.a8.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

2

Adachi, Hironori, Noriho Koyachi, Tatsuya Nakamura i Eiji Nakano. "Development of Quadruped Walking Robots and Their Gait Study". Journal of Robotics and Mechatronics 5, nr 6 (20.12.1993): 548–60. http://dx.doi.org/10.20965/jrm.1993.p0548.

Pełny tekst źródła

Streszczenie:

This paper describes the quadruped walking robots developed at the Mechanical Engineering Laboratory and their gait analysis. Legged locomotion has the potential to adapt itself to changes in walking conditions, but also has problems such as complexity. To overcome these problems, a new link mechanism called ASTBALLEM is used for the legs of the robots, and highly rigid and easily controllable legs are constructed by using this mechanism. To make a legged robot walk stably, it is necessary to provide a suitable gait. In this paper, two kinds of gaits are considered. One is the periodic gait, and it is systematically classified by two parameters. By using this classification method, suitable gaits for static walking and dynamic walking are selected. The other is the adaptive gait. In order to realize their potentials, walking robots must sense the walking conditions and change their gaits. Two adaptive gait schemes are proposed in this paper. One is a gait which adapts to the position of the center of gravity, and the other is a gait for incline terrain. Both gaits use force sensor data for detecting changes in the walking conditions. All the gaits discussed in this paper are experimentally evaluated.

Style APA, Harvard, Vancouver, ISO itp.

3

Thomas, Susan Sienko, i Jenna Barnett. "Walking through Gait Analysis". Orthopaedic Nursing 13, nr 6 (listopad 1994): 7–13. http://dx.doi.org/10.1097/00006416-199411000-00003.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

4

Still, S., K. Hepp i R. J. Douglas. "Neuromorphic Walking Gait Control". IEEE Transactions on Neural Networks 17, nr 2 (marzec 2006): 496–508. http://dx.doi.org/10.1109/tnn.2005.863454.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

5

Wong, Jeremy D., Jessica C. Selinger i J. Maxwell Donelan. "Is natural variability in gait sufficient to initiate spontaneous energy optimization in human walking?" Journal of Neurophysiology 121, nr 5 (1.05.2019): 1848–55. http://dx.doi.org/10.1152/jn.00417.2018.

Pełny tekst źródła

Streszczenie:

In new walking contexts, the nervous system can adapt preferred gaits to minimize energetic cost. During treadmill walking, this optimization is not usually spontaneous but instead requires experience with the new energetic cost landscape. Experimenters can provide subjects with the needed experience by prescribing new gaits or instructing them to explore new gaits. Yet in familiar walking contexts, people naturally prefer energetically optimal gaits: the nervous system can optimize cost without an experimenter’s guidance. Here we test the hypothesis that the natural gait variability of overground walking provides the nervous system with sufficient experience with new cost landscapes to initiate spontaneous minimization of energetic cost. We had subjects walk over paths of varying terrain while wearing knee exoskeletons that penalized walking as a function of step frequency. The exoskeletons created cost landscapes with minima that were, on average, 8% lower than the energetic cost at the initially preferred gaits and achieved at walking speeds and step frequencies that were 4% lower than the initially preferred values. We found that our overground walking trials amplified gait variability by 3.7-fold compared with treadmill walking, resulting in subjects gaining greater experience with new cost landscapes, including frequent experience with gaits at the new energetic minima. However, after 20 min and 2.0 km of walking in the new cost landscapes, we observed no consistent optimization of gait, suggesting that natural gait variability during overground walking is not always sufficient to initiate energetic optimization over the time periods and distances tested in this study. NEW & NOTEWORTHY While the nervous system can continuously optimize gait to minimize energetic cost, what initiates this optimization process during every day walking is unknown. Here we tested the hypothesis that the nervous system leverages the natural variability in gait experienced during overground walking to converge on new energetically optimal gaits created using exoskeletons. Contrary to our hypothesis, we found that participants did not adapt toward optimal gaits: natural variability is not always sufficient to initiate spontaneous energy optimization.

Style APA, Harvard, Vancouver, ISO itp.

6

Asano, Fumihiko, i Masashi Suguro. "Limit cycle walking, running, and skipping of telescopic-legged rimless wheel". Robotica 30, nr 6 (29.11.2011): 989–1003. http://dx.doi.org/10.1017/s0263574711001226.

Pełny tekst źródła

Streszczenie:

SUMMARYThis paper investigates the efficiency and properties of limit cycle walking, running, and skipping of a planar, active, telescopic-legged rimless wheel. First, we develop the robot equations of motion and design an output following control for the telescopic-legs' action. We then numerically show that a stable walking gait can be generated by asymmetrizing the impact posture. Second, we numerically show that a stable running gait can be generated by employing a simple feedback control of the control period, and compare the properties of the generated running gait with those of the walking gait. Furthermore, we find out another underlying gait called skipping that emerges as an extension of the walking gait. Through numerical analysis, we show that the generated skipping gaits are inherently stable and are less efficient than the other two gaits.

Style APA, Harvard, Vancouver, ISO itp.

7

Milner, Clare E., Julia A. Freedman i Xiaopeng Zhao. "Gait Instruction Improves Stiff Knee Gait During Walking". Medicine & Science in Sports & Exercise 43, Suppl 1 (maj 2011): 14. http://dx.doi.org/10.1249/01.mss.0000402710.36978.2f.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

8

Ter, Hon Siong, S. Parasuraman, M. K. A. Ahamed khan i Irraivan Elamvazuthi. "Walking-Assisted Gait in Rehabilitation". Procedia Computer Science 76 (2015): 257–63. http://dx.doi.org/10.1016/j.procs.2015.12.351.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

9

Raheem, Firas A., i Murtadha Khudhair Flayyih. "Creeping Gait Analysis and Simulation of a Quadruped Robot". Al-Khwarizmi Engineering Journal 14, nr 2 (14.03.2019): 93–106. http://dx.doi.org/10.22153/kej.2018.12.004.

Pełny tekst źródła

Streszczenie:

A quadruped (four-legged) robot locomotion has the potential ability for using in different applications such as walking over soft and rough terrains and to grantee the mobility and flexibility. In general, quadruped robots have three main periodic gaits: creeping gait, running gait and galloping gait. The main problem of the quadruped robot during walking is the needing to be statically stable for slow gaits such as creeping gait. The statically stable walking as a condition depends on the stability margins that calculated particularly for this gait. In this paper, the creeping gait sequence analysis of each leg step during the swing and fixed phases has been carried out. The calculation of the minimum stability margins depends upon the forward and inverse kinematic models for each 3-DOF leg and depends on vertical geometrical projection during walking. Simulation and results verify the stability insurance after calculation the minimum margins which indicate clearly the robot COG (Center of Gravity) inside the supporting polygon resulted from the leg-tips.

Style APA, Harvard, Vancouver, ISO itp.

10

Lee, Yoon Haeng, Duc Trong Tran, Jae-ho Hyun, Luong Tin Phan, Ig Mo Koo, Seung Ung Yang i Hyouk Ryeol Choi. "A gait transition algorithm based on hybrid walking gait for a quadruped walking robot". Intelligent Service Robotics 8, nr 4 (11.06.2015): 185–200. http://dx.doi.org/10.1007/s11370-015-0173-2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

11

Cho, D. J., J. H. Kim i D. G. Gweon. "Optimal turning gait of a quadruped walking robot". Robotica 13, nr 6 (listopad 1995): 559–64. http://dx.doi.org/10.1017/s0263574700018634.

Pełny tekst źródła

Streszczenie:

SummaryThe analysis of the gait mode is an important step for constructing a walking robot. In this study an optimal turning gait of a four-legged walking robot is proposed, which maximizes walking speed keeping walking stability larger than a certain required value. To obtain an optimal gait algorithm, for body trajectory of the robot, maximum walking speed, feasible gait modes and stability margin are analyzed for a quadruped walking robot designed in this study. The proposed gait is sufficiently flexible, as to permit crab walking, turning walking and a pure rotational walking about a robot's geometric center. The validity of the proposed gait algorithm is confirmed by many simulations.

Style APA, Harvard, Vancouver, ISO itp.

12

Suri, Anisha, Andrea Rosso, Jessie VanSwearingen, Gelsy Torres-Oviedo, Leslie Coffman, Mark Redfern, Jennifer Brach i Ervin Sejdic. "Fear of Falling and Walking Quality: What Your Walking Reveals". Innovation in Aging 4, Supplement_1 (1.12.2020): 919. http://dx.doi.org/10.1093/geroni/igaa057.3374.

Pełny tekst źródła

Streszczenie:

Abstract Fear of Falling (FOF) is common among community-dwelling older adults and is associated with increased fall-risk. In this cross-sectional study we examined the relationships between FOF and factors associated with fall-risk such as gait quality, cognition, and walking-confidence. Using baseline data from older adult participants in a randomized exercise trial (N=232; age 77±6; 65% females; 40% reported FOF), we quantified the following outcome measure for (1) gait quality: harmonic ratio (smoothness) and time-frequency spatiotemporal variables from triaxial accelerometry during 6 minute walk; gait speed, step-time CoV (variability) and walk-ratio (step-length/cadence) on an instrumented walkway; (2) cognition: Trails A and B (3) walking-confidence: Gait efficacy Scale. Mann Whitney U-tests indicated individuals without FOF had better gait quality (p<0.05): greater smoothness (2.38±.58 vs 1.14±.73), speed (1.10±.15 vs 1.04±.17 m/s) and walk-ratio (.56±.07 vs .53±.08 cm/steps/min), lower step-time CoV (3.72±1.24 vs 4.17±1.66), and greater walking-confidence (89±11 vs 79±13). A random forest classifier predicted FOF with 64% (gait only) and 70% (additional variables: cognition, walking-confidence) accuracy; Gini-index based ranking indicated gait quality (smoothness vertical (V) direction, walking speed) were consistently important variables. Linear Support Vector Machine learning yielded accuracies of 60% (only gait) and 68% (with additional measures): smoothness V, mediolateral frequency bandwidth, gait speed among top 4 ranked variables in both models, and walking-confidence in the additional measures model; smoothness-V the highest weighted coefficient (-0.52). Based on these findings, interventions targeted for gait quality and walking-confidence may be important to overcome FOF and reduce fall risks.

Style APA, Harvard, Vancouver, ISO itp.

13

Wisse, Martijn. "Bipedal walking robots: From gait analysis to gait synthesis". Gait & Posture 24 (grudzień 2006): S4—S6. http://dx.doi.org/10.1016/j.gaitpost.2006.11.007.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

14

Williams, Cylie M., Paul Tinley i Barry Rawicki. "Idiopathic Toe-Walking". Journal of the American Podiatric Medical Association 104, nr 3 (1.05.2014): 253–62. http://dx.doi.org/10.7547/0003-0538-104.3.253.

Pełny tekst źródła

Streszczenie:

Background Idiopathic toe-walking (ITW) is a condition commonly seen by podiatric physicians. Because a toe-walking gait style is also caused by or associated with many other medical conditions, podiatric physicians should pay particular attention to ensuring an accurate diagnosis. There are many reported treatment options available for ITW. Therefore, a literature review was conducted to determine what treatment options are supported by the evidence as having the best long-term effect on ITW gait. Methods After extraction of relevant articles, 21 manuscripts reporting treatment options for ITW gait were appraised against the levels of evidence. Results From these articles, there was no single treatment option reported as having a long-term effect on the gait of children with ITW. There was support in the literature for surgical interventions, serial casting, and the use of botulinum toxin type A. There was limited evidence that footwear or orthoses changed the gait pattern. Conclusions This review updates the knowledge of podiatric physicians, enhances how children who present with this gait style can be managed, and highlights areas for future research.

Style APA, Harvard, Vancouver, ISO itp.

15

Asmara, Rosa Andrie, Irtafa Masruri, Cahya Rahmad, Indrazno Siradjuddin, Erfan Rohadi, Ferdian Ronilaya, Anik Nur Handayani i Qonitatul Hasanah. "Comparative Study of Gait Gender Identification using Gait Energy Image (GEI) and Gait Information Image (GII)". MATEC Web of Conferences 197 (2018): 15006. http://dx.doi.org/10.1051/matecconf/201819715006.

Pełny tekst źródła

Streszczenie:

Identifying gender from the pedestrian video is one crucial key to study demographics in such areas. With current video surveillance technology, identifying gender from a distance is possible. This research proposed the utilization of computer vision to identify gender based on their walking gait. The data feature used to determine gender based on their walking gait divided into five parts, namely the head, chest, back, waist & buttocks, and legs. Two different methods are used to perform the real-time gender gait recognition process, i.e., Gait Energy Image (GEI) and Gait Information Image (GII), while the Support Vector Machine (SVM) method used as the data classifier. The experimental results show that the process of identifying gender based on walking with GEI method is 55% accuracy and GII method is 60% accuracy. From these results, it can conclude that the method GII with SVM classifier has the best accuracy in the process of gender classification

Style APA, Harvard, Vancouver, ISO itp.

16

Zhang, Li Xun, Lei Yi, Lan Wang i Kang Wang. "On the Biomechanical Design of the Walking Assistance Mechanism in Aided-Walking Wheelchair". Key Engineering Materials 419-420 (październik 2009): 157–60. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.157.

Pełny tekst źródła

Streszczenie:

A new kind of walking assistance mechanism in aided-walking wheelchair is proposed to help stroke and cord injury patients on gait rehabilitation training and aided-walking indoor and outdoor. Each side of the walking assistance mechanism, which is a double-crank linkage mechanism actuated by one driver, assists the motion of thigh and shank synchronously. The mechanism can control the walking gait of both legs to assist the patients in walking and gait rehabilitation training. The mechanism is analyzed, and the optimal proportion of the structure dimension suitable for different person is obtained according to the clinical gait analysis data. The simulation results show that the walking assistance mechanism can simulate the nature gait during human walking and realize the walking assistance and gait rehabilitation training function.

Style APA, Harvard, Vancouver, ISO itp.

17

Otoda, Yuji, Hiroshi Kimura i Kunikatsu Takase. "Construction of Gait Adaptation Model in Human Splitbelt Treadmill Walking". Applied Bionics and Biomechanics 6, nr 3-4 (2009): 269–84. http://dx.doi.org/10.1155/2009/305061.

Pełny tekst źródła

Streszczenie:

There are a huge number of studies that measure kinematics, dynamics, the oxygen uptake and so on in human walking on the treadmill. Especially in walking on the splitbelt treadmill where the speed of the right and left belt is different, remarkable differences in kinematics are seen between normal and cerebellar disease subjects. In order to construct the gait adaptation model of such human splitbelt treadmill walking, we proposed a simple control model and made a newly developed 2D biped robot walk on the splitbelt treadmill. We combined the conventional limit-cycle based control consisting of joint PD-control, cyclic motion trajectory planning and a stepping reflex with a newly proposed adjustment of P-gain at the hip joint of the stance leg. We showed that the data of robot (normal subject model and cerebellum disease subject model) experiments had high similarities with the data of normal subjects and cerebellum disease subjects experiments carried out by Reisman et al. (2005) and Morton and Bastian (2006) in ratios and patterns. We also showed that P-gain at the hip joint of the stance leg was the control parameter of adaptation for symmetric gaits in splitbelt walking and P-gain adjustment corresponded to muscle stiffness adjustment by the cerebellum. Consequently, we successfully proposed the gait adaptation model in human splitbelt treadmill walking and confirmed the validity of our hypotheses and the proposed model using the biped robot.

Style APA, Harvard, Vancouver, ISO itp.

18

Miyawaki, Kazuto, Takehiro Iwami, Goro Obinata, Keiichi Kutsuzawa i Shinzo Nishimura. "Evaluation of the Gait of Elderly People using an Assisting Cart (Gait on Slope)". Journal of Robotics and Mechatronics 14, nr 6 (20.12.2002): 538–46. http://dx.doi.org/10.20965/jrm.2002.p0538.

Pełny tekst źródła

Streszczenie:

As society ages, equipment for assisting walking is receiving increasing attention. We previously developed a cart to assist walking on flat surfaces and evaluated its effect on user muscular tension and energy consumption. In this paper, we determined energy consumption during slope walking based on a musculoskeletal model; 10% and 15% decreases of energy consumption are achieved with cart assistance in slope ascent and descent. We expect our evaluation to be useful for developing a practical walker.

Style APA, Harvard, Vancouver, ISO itp.

19

Yang, Jung-Min. "Gait synthesis for hexapod robots with a locked joint failure". Robotica 23, nr 6 (listopad 2005): 701–8. http://dx.doi.org/10.1017/s0263574705001578.

Pełny tekst źródła

Streszczenie:

This paper presents a strategy for generating fault-tolerant gaits of hexapod walking robots. A multi-legged robot is considered to be fault-tolerant with respect to a given failure if it is capable of continuing its walking after the occurrence of a failure, maintaining its static stability. The failure concerned in this paper is a locked joint failure for which a joint in a leg cannot move and is locked in place. The kinematic condition for the existence of fault-tolerant gaits is derived for straight-line walking of a hexapod robot on even terrain. An algorithm for generating fault-tolerant gaits is described and, especially, periodic gaits are presented for forward walking of a hexapod robot with a locked joint failure. The leg sequence and the stride length formula are analytically driven based on gait study and robot kinematics. A case study on post-failure walking of a hexapod robot with the wave gait is shown to demonstrate the applicability of the proposed method.

Style APA, Harvard, Vancouver, ISO itp.

20

Möhwald, Ken, Max Wuehr, Fabian Schenkel, Katharina Feil, Michael Strupp i Roman Schniepp. "The gait disorder in primary orthostatic tremor". Journal of Neurology 267, S1 (11.09.2020): 285–91. http://dx.doi.org/10.1007/s00415-020-10177-y.

Pełny tekst źródła

Streszczenie:

Abstract Objective To uncover possible impairments of walking and dynamic postural stability in patients with primary orthostatic tremor (OT). Methods Spatiotemporal gait characteristics were quantified in 18 patients with primary OT (mean age 70.5 ± 5.9 years, 10 females) and 18 age-matched healthy controls. One-third of patients reported disease-related fall events. Walking performance was assessed on a pressure-sensitive carpet under seven conditions: walking at preferred, slow, and maximal speed, with head reclination or eyes closed, and while performing a cognitive or motor dual-task paradigm. Results Patients exhibited a significant gait impairment characterized by a broadened base of support (p = 0.018) with increased spatiotemporal gait variability (p = 0.010). Walking speed was moderately reduced (p = 0.026) with shortened stride length (p = 0.001) and increased periods of double support (p = 0.001). Gait dysfunction became more pronounced during slow walking (p < 0.001); this was not present during fast walking. Walking with eyes closed aggravated gait disability as did walking during cognitive dual task (p < 0.001). Conclusion OT is associated with a specific gait disorder with a staggering wide-based walking pattern indicative of a sensory and/or a cerebellar ataxic gait. The aggravation of gait instability during visual withdrawal and the normalization of walking with faster speeds further suggest a proprioceptive or vestibulo-cerebellar deficit as the primary source of gait disturbance in OT. In addition, the gait decline during cognitive dual task may imply cognitive processing deficits. In the end, OT is presumably a complex network disorder resulting in a specific spino-cerebello-frontocortical gait disorder that goes beyond mere tremor networks.

Style APA, Harvard, Vancouver, ISO itp.

21

Wang, Wen-Fong, Wei-Chih Lien, Che-Yu Liu i Ching-Yu Yang. "Study on Tripping Risks in Fast Walking through Cadence-Controlled Gait Analysis". Journal of Healthcare Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/2723178.

Pełny tekst źródła

Streszczenie:

Fast walking is a common exercise for most people to promote health. However, a higher cadence due to fast walking on ordinary or uneven ground raises the risk of tripping. To investigate the tripping issue, research to observe the gait in fast walking is needed. To explore the relationship between fast gait and the risk of tripping, a gait recording system with a specific synchronization mechanism was developed in this work. The system can acquire gait signals from wearable sensors and action cameras at different cadences. Meanwhile, algorithms for gait cycle segmentation and characteristic extraction were proposed for analyzing a fast gait. In the gait analysis, the correlations of low, moderate, and high cadence in cueing and no cueing gaits were computed, and two results were obtained. First, the higher the cadence is, the larger the motion strength in the terminal foot swing will be and the smaller the motion strength at the starting foot swing. Second, the decreased distance of foot clearance becomes more conspicuous as the cadence increased, especially if one is walking more than 120 beats. The results indicate that fast walking with bigger strides and lower cadence is the best way to maintain safety in moving over ordinary ground.

Style APA, Harvard, Vancouver, ISO itp.

22

Nolan, Claire M., Samantha S. C. Kon, Suhani Patel, Sarah E. Jones, Ruth E. Barker, Michael I. Polkey, Matthew Maddocks i William D.-C. Man. "Gait speed and pedestrian crossings in COPD". Thorax 73, nr 2 (5.05.2017): 191–92. http://dx.doi.org/10.1136/thoraxjnl-2017-210173.

Pełny tekst źródła

Streszczenie:

The assumed minimum walking speed at pedestrian crossings is 1.2 m/s. In this prospective cohort study, usual walking speed was measured over a 4 m course in 926 community-dwelling, ambulatory patients with stable COPD. Mean (SD) walking speed was 0.91 (0.24) m/s with only 10.7% walking at a speed equal or greater than 1.2 m/s. In order for 95% of this cohort to safely negotiate a pedestrian cross, traffic lights would have to assume a minimum walking speed of 0.50 m/s (2.4 times longer than current times). The current assumed normal walking speed for pedestrian crossings is inappropriate for patients with COPD.The studies were registered on clinicaltrials.gov and these data relate to the pre-results stage: NCT01649193, NCT01515709 and NCT01507415.

Style APA, Harvard, Vancouver, ISO itp.

23

Chen, Hai Long, Xiao Wu, Jun Du i Jin Ping Tang. "Biped Walking Robot Gait Planning Research". Advanced Materials Research 706-708 (czerwiec 2013): 674–77. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.674.

Pełny tekst źródła

Streszczenie:

This paper uses biped walking robot as the research object, and designs robots original system, based on the requirements of Biped Walking Robot Competition of China. According to the biped walking robots characteristics of multi-joints, many degrees of freedom, multivariable, strong coupling and nonlinearity [, we can build system model using the Denavi - Hartenberg coordinate, describe the system model by the homogeneous coordinate transformation theory, and then plan on system gait based on ZMP stability . Finally, we can solve for the joint trajectory of the system by using computer-aided software.

Style APA, Harvard, Vancouver, ISO itp.

24

OTSU, Yuji, Hiroki KANAYA, Takahiko NAKAMURA, Kensaku KAWAKAMI, Kenji MORIYA i Katsumi HAMA. "109 Gait Analysis of the Slope Walking with Walking Aid". Proceedings of Conference of Hokkaido Branch 2006.45 (2006): 17–18. http://dx.doi.org/10.1299/jsmehokkaido.2006.45.17.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

SANO, Akihito, Junji FURUSHO i Atsuko MIZOGUCHI. "3D Dynamic Walking Analysis of Pace Gait Using Walking Simulator." Transactions of the Japan Society of Mechanical Engineers Series C 58, nr 547 (1992): 757–65. http://dx.doi.org/10.1299/kikaic.58.757.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

26

Akahira, Toshizo, i Kiichiro Taguchi. "Gait Analysis at Beginning of Walking". Equilibrium Research 53, Suppl-10 (1994): 62–66. http://dx.doi.org/10.3757/jser.53.suppl-10_62.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

27

Tyson, Sarah F. "Hemiplegic gait symmetry and walking aids". Physiotherapy Theory and Practice 10, nr 3 (styczeń 1994): 153–59. http://dx.doi.org/10.3109/09593989409036392.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

28

Chen, Qiming, Hong Cheng, Chunfeng Yue i Rui Huang. "Dynamic gait planning for walking assistance". International Journal of Mechatronics and Automation 6, nr 1 (2017): 36. http://dx.doi.org/10.1504/ijma.2017.093314.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

29

Huang, Rui, Chunfeng Yue, Qiming Chen i Hong Cheng. "Dynamic gait planning for walking assistance". International Journal of Mechatronics and Automation 6, nr 1 (2017): 36. http://dx.doi.org/10.1504/ijma.2017.10014404.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

30

SHIOZAWA, Naruhiro, Tatsuya FUJITA i Masaaki MAKIKAWA. "Gait Simulator Aimed at Free Walking". Transactions of the Institute of Systems, Control and Information Engineers 16, nr 4 (2003): 158–65. http://dx.doi.org/10.5687/iscie.16.158.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

31

Jiménez, Maria A., i P. González de Santos. "Terrain-Adaptive Gait for Walking Machines". International Journal of Robotics Research 16, nr 3 (czerwiec 1997): 320–39. http://dx.doi.org/10.1177/027836499701600304.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

32

Nagata, Yousuke, Masayoshi Yamamoto i Shigeyuki Funabiki. "Gait Evaluation of Overground Walking and Treadmill Walking Using Compass-Type Walking Model". IEEJ Transactions on Electronics, Information and Systems 129, nr 7 (2009): 1212–19. http://dx.doi.org/10.1541/ieejeiss.129.1212.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

33

Razavi, Hamed, Salman Faraji i Auke Ijspeert. "From standing balance to walking: A single control structure for a continuum of gaits". International Journal of Robotics Research 38, nr 14 (16.10.2019): 1695–716. http://dx.doi.org/10.1177/0278364919875205.

Pełny tekst źródła

Streszczenie:

This article presents a control algorithm framework with which a bipedal robot can perform a variety of gaits by only modifying a small set of control parameters. The controller drives a number of variables, called non-emergent variables, to their desired trajectories resulting in a desired emergent walking gait. While the non-emergent variables remain the same independent of the gait, their desired trajectories are functions of a small set of control parameters that change as a function of the desired gait. This control algorithm has been tested on the humanoid robot COMAN, where different gaits including standing balance, stepping in place, periodic walking gaits with different velocities, as well as gait switching are demonstrated in experiments.

Style APA, Harvard, Vancouver, ISO itp.

34

Liu Ning, Li Jun-Feng i Wang Tian-Shu. "Period-doubling gait and chaotic gait of biped walking model". Acta Physica Sinica 58, nr 6 (2009): 3772. http://dx.doi.org/10.7498/aps.58.3772.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

35

Qiu, Xi-Ding, i Shin-Min Song. "A Strategy of Wave Gait for a Walking Machine Traversing a Rough Planar Terrain". Journal of Mechanisms, Transmissions, and Automation in Design 111, nr 4 (1.12.1989): 471–78. http://dx.doi.org/10.1115/1.3259023.

Pełny tekst źródła

Streszczenie:

The performance of a legged system is closely related to the adopted gait. Among the many available gaits, the wave gait possesses the optimum stability [1–3] and has been applied to walking on perfectly smooth terrain. The follow-the-leader (FTL) gait has the least demands for foothold selection and is the most suitable for walking on rough terrain [14]. In this paper, a strategy of wave gait which enables a hexapod to traverse two-dimensional, rough terrain is developed. This strategy applies a quasi FTL mode in walking and hence it has the advantages of both wave gait (optimum stability) and FTL gait (easy control on rough terrain). During walking, the legs move according to the wave gait and the two forelegs are adjusted to avoid forbidden areas. The maximum foot adjustment is determined by the current foot positions and the foot positions in the following one or two step(s). In order to improve the stability, different methods of foot adjustments and body adjustments are evaluated and integrated into the strategy. Finally, this strategy is verified by using computer graphics simulations.

Style APA, Harvard, Vancouver, ISO itp.

36

Brown, Marcus J., Laura A. Hutchinson, Michael J. Rainbow, Kevin J. Deluzio i Alan R. De Asha. "A Comparison of Self-Selected Walking Speeds and Walking Speed Variability When Data Are Collected During Repeated Discrete Trials and During Continuous Walking". Journal of Applied Biomechanics 33, nr 5 (1.10.2017): 384–87. http://dx.doi.org/10.1123/jab.2016-0355.

Pełny tekst źródła

Streszczenie:

A typical gait analysis data collection consists of a series of discrete trials, where a participant initiates gait, walks through a motion capture volume, and then terminates gait. This is not a normal ‘everyday’ gait pattern, yet measurements are considered representative of normal walking. However, walking speed, a global descriptor of gait quality that can affect joint kinematics and kinetics, may be different during discrete trials, compared to continuous walking. Therefore, the purpose of this study was to investigate the effect of continuous walking versus discrete trials on walking speed and walking speed variability. Data were collected for 25 healthy young adults performing 2 walking tasks. The first task represented a typical gait data collection session, where subjects completed repeated trials, beginning from a standstill and walking along a 12-m walkway. The second task was continuous walking along a “figure-of-8” circuit, with 1 section containing the same 12-m walkway. Walking speed was significantly higher during the discrete trials compared to the continuous trials (p < .001), but there were no significant differences in walking speed variability between the conditions. The results suggest that choice of gait protocol may affect results where variables are sensitive to walking speed.

Style APA, Harvard, Vancouver, ISO itp.

37

Chesebrough, Sam, Babak Hejrati i John Hollerbach. "The Treadport: Natural Gait on a Treadmill". Human Factors: The Journal of the Human Factors and Ergonomics Society 61, nr 5 (17.01.2019): 736–48. http://dx.doi.org/10.1177/0018720818819951.

Pełny tekst źródła

Streszczenie:

Objective: To evaluate the differences between walking on an advanced robotic locomotion interface called the Treadport and walking overground with healthy subjects. Background: Previous studies have compared treadmill-based and overground walking in terms of gait parameters. The Treadport’s unique features including self-selected speed capability, large belt, kinesthetic force feedback, and virtual reality environment distinguish it from other locomotion interfaces and could provide a natural walking experience for the users. Method: Young, healthy subjects ( N = 17) walked 10 meters 10 times each for both overground and the Treadport environments. Comparison between walking conditions used spatiotemporal and kinematic parameters. In addition, electromyographic data was collected for five of the 17 subjects to compare muscle activity between the two conditions. Results: Gait on the Treadport was found to have no significant differences ( p > .05) with overground walking in terms of hip and knee joint angles, cadence and stride length and stride speed, and muscle activation of the four muscle groups measured. Differences ( p < .05) were observed in ankle dorsiflexion which was reduced by 2.47 ± 0.01 degrees on the Treadport. Conclusion: Walking overground and on the Treadport is highly correlated and not significantly different in 13 of 14 parameters. Application: This study suggests that the Treadport creates an environment for natural walking experience, where natural gait of users is almost preserved, with great potential to be useful for other applications, such as gait rehabilitation of individuals with walking impairments.

Style APA, Harvard, Vancouver, ISO itp.

38

Orcioli-Silva, Diego, Lucas Simieli, Fabio Augusto Barbieri, Florindo Stella i Lilian Teresa Bucken Gobbi. "Adaptive Walking in Alzheimer's Disease". International Journal of Alzheimer's Disease 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/674589.

Pełny tekst źródła

Streszczenie:

The aim of this study is to analyze dual-task effects on free and adaptive gait in Alzheimer's disease (AD) patients. Nineteen elders with AD participated in the study. A veteran neuropsychiatrist established the degree of AD in the sample. To determine dual-task effects on free and adaptive gait, patients performed five trials for each experimental condition: free and adaptive gait with and without a dual-task (regressive countdown). Spatial and temporal parameters were collected through an optoelectronic tridimensional system. The central stride was analyzed in free gait, and the steps immediately before (approaching phase) and during the obstacle crossing were analyzed in adaptive gait. Results indicated that AD patients walked more slowly during adaptive gait and free gait, using conservative strategies when confronted either with an obstacle or a secondary task. Furthermore, patients sought for stability to perform the tasks, particularly for adaptive gait with dual task, who used anticipatory and online adjustments to perform the task. Therefore, the increase of task complexity enhances cognitive load and risk of falls for AD patients.

Style APA, Harvard, Vancouver, ISO itp.

39

GOUWANDA, DARWIN. "COMPARISON OF GAIT SYMMETRY INDICATORS IN OVERGROUND WALKING AND TREADMILL WALKING USING WIRELESS GYROSCOPES". Journal of Mechanics in Medicine and Biology 14, nr 01 (luty 2014): 1450006. http://dx.doi.org/10.1142/s0219519414500067.

Pełny tekst źródła

Streszczenie:

Gait symmetry has been considered as one of the primary indicators in gait analysis. A symmetrical gait offers several benefits. Among them is a stable and adaptive gait. With wide adoption of wireless inertial sensors i.e., the gyroscope in clinical and rehabilitation settings, this work aimed to investigate the application of symmetry index (SI), symmetry ratio (SR) and normalised symmetry index (SInorm) in defining gait symmetry using measurement collected from wireless gyroscope network. Thigh and shank angular rates during mid-swing, heel-strike and toe-off are used to determine SI, SR and SInorm. In this study, participants were not only instructed to walk naturally on the ground and on a treadmill, but were also requested to walk with restricted knee movement on the ground and on a treadmill to emulate asymmetrical gait. This study demonstrated that the gyroscope can be used to determine gait symmetry. It also shows that SI and SR are not the right indicators to examine gait symmetry using gyroscope data. SI can exceed more than 1,000% at several instances. SR exhibits similar behavior too i.e., it can be as high as 1,000. SInorm performs better in both overground walking and treadmill walking and there are significant difference between symmetrical and asymmetrical gait (p < 0.01).

Style APA, Harvard, Vancouver, ISO itp.

40

Liu, De Jun, Yan Tao Tian i Hong Jiang. "Biped Robot Control System Based on Adaptive Gain Energy Control with Angle Invariant". Advanced Materials Research 225-226 (kwiecień 2011): 540–45. http://dx.doi.org/10.4028/www.scientific.net/amr.225-226.540.

Pełny tekst źródła

Streszczenie:

The walking motion state of biped robot with knee is analyzed, the system model is established based on the walking phase; for the stability of passive walking gait is poor, The limit cycle convergence domain is smaller and sensitive to interference. Energy control and angle invariant control is merged, A steady gait is produced at different angles on the ground by the angle invariant control, the gait limit cycle convergence domain is expanded by the energy control method, the energy control gain is adjusted by nonlinear function. The simulation result shows that the method can expand the limit cycle convergence domain and increase the robustness.

Style APA, Harvard, Vancouver, ISO itp.

41

Kabbaligere, Rakshatha, i Charles S. Layne. "Adaptation in Gait to Body-Weight Unloading". Applied Sciences 9, nr 21 (23.10.2019): 4494. http://dx.doi.org/10.3390/app9214494.

Pełny tekst źródła

Streszczenie:

Modifications in load-related sensory input during unloaded walking can lead to recalibration of the body schema and result in aftereffects. The main objective of this study was to identify the adaptive changes in gait and body-weight perception produced by unloaded walking. Gait performance during treadmill walking was assessed in 12 young participants before and after 30 min of unloaded walking (38% body weight) by measuring lower limb kinematics, temporal gait measures, and electromyography (EMG). A customized weight-perception scale was used to assess perception of body weight. Participants perceived their body weight to be significantly heavier than normal after unloading while walking. Angular displacement about ankle and knee was significantly reduced immediately after unloaded walking, while temporal gait parameters remained unchanged. The EMG activity in some muscles was significantly reduced after unloading. These findings indicate that walking at reduced body weight results in alterations in segmental kinematics, neuromuscular activity, and perception of body weight, which are the aftereffects of motor adaptation to altered load-related afferent information produced by unloading. Understanding the adaptive responses of gait to unloading and the time course of the aftereffects will be useful for practitioners who use body-weight unloading for rehabilitation.

Style APA, Harvard, Vancouver, ISO itp.

42

Jung, Taeyou, Yumi Kim, Luke E. Kelly, Mayumi Wagatsuma, Youngok Jung i Mark F. Abel. "Comparison of Treadmill and Overground Walking in Children and Adolescents". Perceptual and Motor Skills 128, nr 3 (10.02.2021): 988–1001. http://dx.doi.org/10.1177/0031512521993102.

Pełny tekst źródła

Streszczenie:

The primary purpose of this study was to compare biomechanical gait variables and perceived gait velocity between overground and treadmill walking conditions among typically developing children and adolescents. Twenty children and adolescents ( Mage = 11.4, SD = 2.9 years) walked overground and on a treadmill at a matched comfortable walking speed while a 3-D motion analysis system captured spatiotemporal and kinematic gait parameters. In order to compare perceived gait velocities, we acquired data at self-selected comfortable and fastest walking speeds. Paired t-tests comparing the children’s speed and gait in these two different walking conditions revealed significantly higher cadence ( p < .001) and shorter stride length ( p < .002), during treadmill versus overground walking. In addition, treadmill walking showed statistically significant differences in joint kinematics of ankle excursion and pelvic rotation excursions ( p < .001). Participants chose slower speeds on the treadmill than for overground walking when they were asked to select their comfortable and fastest walking speeds ( p < .001). Our findings suggest that these differences between treadmill and overground walking in cadence, stride length, and perceived gait velocity should be considered whenever a treadmill is used for gait research within the pediatric population. However, the differences we found in gait kinematics between these two walking conditions appear to be relatively trivial and fell within the common error range of kinematic analysis.

Style APA, Harvard, Vancouver, ISO itp.

43

Yang, Fan, Jun Wang i Jin Ping Sun. "Human Gaits Differentiation Based on Micro-Doppler Features". Advanced Materials Research 846-847 (listopad 2013): 203–6. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.203.

Pełny tekst źródła

Streszczenie:

The radar micro-Doppler signatures of human gait have been investigated and applied to many practical use since late 1990s.Human body can be modeled as jointly connected rigid segments or links. And yet the model was confined to the walking gait. In order to apply the model to different circumstances, the paper modified the currently used human walking model into three different models. Firstly, the analysis of human crouch walking with arms was given. Then radar echo of the model was provided, whose correctness and effectiveness were proved through simulation. Secondly the other two gaits,running and crawling, were modeled in the same way. Finall the paper constructed scenes that two men walked in varied walking gaits, through simulation conclusion was drawn that if two people walked in cetain different gaits,those two different gaits can be distinguished.

Style APA, Harvard, Vancouver, ISO itp.

44

Alghooneh, Mansoor, i Christine Q. Wu. "Single-support heel-off: a crucial gait event helps realizing agile and energy-efficient bipedal walking". Robotica 34, nr 6 (12.09.2014): 1335–50. http://dx.doi.org/10.1017/s026357471400232x.

Pełny tekst źródła

Streszczenie:

SUMMARYSingle-support heel-off occurs when the heel of the trailing leg has been lifted from the ground around its toe, while the leading leg is still swinging forward. A similar gait event occurs during human walking, and is crucial to achieve a longer step length and a higher walking speed. In this paper, this crucial gait event is studied, specifically in how it influences the agility and the energy efficiency of bipedal walking. Toward this goal, the concept of limit-cycle bipedal walking which possesses natural and energy-efficient gaits is employed. The aforementioned concept is applied to a flat-foot bipedal model which is developed and actuated by a constant hip torque only during the single-support phase to walk on the ground. The impedance of each ankle is adjusted by using two springs, one at the back-side and the other at the front-side, as well as one damper. In comparison with point/round foot bipedal models, the flat-foot bipedal model produces more versatile limit-cycle gaits comprised of a number of gait series, each of which is a sequence detected among twelve gait postures dictated by the kinetics of the unilateral constraints at the heel, toe, or both. As a result of comprehensive simulations, it is concluded that single-support heel-off significantly improves the agility of bipedal walking because of the increase in the step length and the walking speed. Furthermore, even though limit-cycle gaits including single-support heel-off require higher energy input as compared with gaits excluding such an event, single-support heel-off significantly improves the energy efficiency of bipedal walking since the increase in the step length dominates the increase in the energy input.

Style APA, Harvard, Vancouver, ISO itp.

45

Mummolo, Carlotta, i Joo H. Kim. "Passive and dynamic gait measures for biped mechanism: formulation and simulation analysis". Robotica 31, nr 4 (15.10.2012): 555–72. http://dx.doi.org/10.1017/s0263574712000586.

Pełny tekst źródła

Streszczenie:

SUMMARYUnderstanding and mimicking human gait is essential for design and control of biped walking robots. The unique characteristics of normal human gait are described as passive dynamic walking, whereas general human gait is neither completely passive nor always dynamic. To study various walking motions, it is important to quantify the different levels of passivity and dynamicity, which have not been addressed in the current literature. In this paper, we introduce the initial formulations of Passive Gait Measure (PGM) and Dynamic Gait Measure (DGM) that quantify passivity and dynamicity, respectively, of a given biped walking motion, and the proposed formulations will be demonstrated for proof-of-concepts using gait simulation and analysis. The PGM is associated with the optimality of natural human walking, where the passivity weight functions are proposed and incorporated in the minimization of physiologically inspired weighted actuator torques. The PGM then measures the relative contribution of the stance ankle actuation. The DGM is associated with the gait stability, and quantifies the effects of inertia in terms of the Zero-Moment Point and the ground projection of center of mass. In addition, the DGM takes into account the stance foot dimension and the relative threshold between static and dynamic walking. As examples, both human-like and robotic walking motions during single support phase are generated for a planar biped system using the passivity weights and proper gait parameters. The calculated PGM values show more passive nature of human-like walking as compared with the robotic walking. The DGM results verify the dynamic nature of normal human walking with anthropomorphic foot dimension. In general, the DGMs for human-like walking are greater than those for robotic walking. The resulting DGMs also demonstrate their dependence on the stance foot dimension as well as the walking motion; for a given walking motion, smaller foot dimension results in increased dynamicity. Future work on experimental validation and demonstration will involve actual walking robots and human subjects. The proposed results will benefit the human gait studies and the development of walking robots.

Style APA, Harvard, Vancouver, ISO itp.

46

Arazpour, Mokhtar, Mahmoud Joghtaei, Mahmood Bahramizadeh, Monireh Ahmadi Bani, Stephen W. Hutchins, Sarah Curran, Mohammad E. Mousavi, Guive Sharifi i Mohammad A. Mardani. "Comparison of gait between healthy participants and persons with spinal cord injury when using the advanced reciprocating gait orthosis". Prosthetics and Orthotics International 40, nr 2 (20.07.2015): 287–93. http://dx.doi.org/10.1177/0309364615592699.

Pełny tekst źródła

Streszczenie:

Background:The advanced reciprocating gait orthosis (ARGO) has a rigid structure which provides restricted movement at the hip, knee, and ankle joints and incorporates a pelvic section with an extended section in the lumbar region. Healthy subjects, when walking with an RGO in situ, could feasibly demonstrate the level of limitation in movement imposed by ARGO-assisted ambulation.Objective:The aim of this study was to compare the function of the advanced reciprocating gait orthosis when fitted with the dorsiflexion-assist ankle–foot orthoses on temporal–spatial parameters and kinematics of walking in both able-bodied people and those with spinal cord injury.Study design:Quasi experimental design.Methods:Data were acquired from six able-bodied and four spinal cord injury subjects who used an advanced reciprocating gait orthosis which incorporated dorsiflexion-assist ankle–foot orthoses. Kinematics and temporal–spatial parameters were calculated and compared.Results:All able-bodied individuals walked with speeds which were only approximately one-third that of when walking without an orthosis. The mean step length and cadence were both reduced by 48% and 6%, respectively. There were significant differences in hip, knee, and ankle joint range of motions between normal walking and walking with the advanced reciprocating gait orthosis both in able-bodied subjects and patients with spinal cord injury. There were also significant differences in the speed of walking, cadence, step length, hip range of motion, and ankle range of motion when using the advanced reciprocating gait orthosis between the two groups.Conclusion:Temporal–spatial parameters and lower limb sagittal plane kinematics of walking were altered compared to normal walking, especially when spinal cord injury subjects walked with the advanced reciprocating gait orthosis compared to the able-bodied subjects.Clinical relevanceTo produce an improvement in RGO function, an increase in walking performance should involve attention to improvement of hip, knee, and ankle joint kinematics, which differs significantly from normal walking.

Style APA, Harvard, Vancouver, ISO itp.

47

Wan, Xianglong, i Yoji Yamada. "Changes in the Determinism of the Gait Dynamics with the Intervention of a Robotic Walker". Applied Sciences 10, nr 14 (18.07.2020): 4939. http://dx.doi.org/10.3390/app10144939.

Pełny tekst źródła

Streszczenie:

(1) Robotic walkers have gradually been developed over the last decade, and their use has caused changes in gait. However, detailed gait analyses during robotic walker-assisted walking have not been performed. In this study, we aim to identify the changes in determinism of gait dynamics owing to the intervention of a robotic walker. (2) Eleven healthy subjects participated in walking experiments under normal walking, rollator-assisted walking, and robotic walker-assisted walking conditions. We analyzed the measured trunk acceleration to derive the gait parameters, local scaling exponent (LSE, from correlation sum), and percentage of determinism (%DET, from recurrence plot). (3) The walking speed during rollator-assisted walking was significantly lower than that during robotic walker-assisted walking. Changes in the shape of the LSE along the anterior–posterior direction revealed the influence of the robotic walker at an individual level. The changes in %DET along the anterior–posterior direction were also significantly different between normal walking and robotic walker-assisted walking. (4) The rollator decreased the walking speed in comparison to normal walking. The changed LSE and reduced %DET imply reduced deterministic patterns and disturbance to the gait dynamics. The robotic walker only affects the gait dynamics in the anterior–posterior direction. Furthermore, the burden on the subjects was reduced during robotic walker-assisted walking.

Style APA, Harvard, Vancouver, ISO itp.

48

Roemmich, Ryan, Jaimie A. Roper, Robert S. Eisinger, Jackson N. Cagle, Lauren Maine, Wissam Deeb, Aparna Wagle Shukla i in. "Gait worsening and the microlesion effect following deep brain stimulation for essential tremor". Journal of Neurology, Neurosurgery & Psychiatry 90, nr 8 (7.03.2019): 913–19. http://dx.doi.org/10.1136/jnnp-2018-319723.

Pełny tekst źródła

Streszczenie:

ObjectiveTo investigate the effects of unilateral thalamic deep brain stimulation (DBS) on walking in persons with medication-refractory essential tremor (ET).MethodsWe performed laboratory-based gait analyses on 24 persons with medication-refractory ET before and after unilateral thalamic DBS implantation. Normal and tandem walking parameters were analysed across sessions (PRE-DBS/DBS OFF/DBS ON) by repeated measures analyses of variance. Pearson’s correlations assessed whether changes in walking after DBS were global (ie, related across gait parameters). Baseline characteristics, lead locations and stimulation parameters were analysed as possible contributors to gait effects.ResultsDBS minimally affected gait at the cohort level. However, 25% of participants experienced clinically meaningful gait worsening. Walking speed decreased by >30% in two participants and by >10% in four others. Decreased walking speed correlated with increased gait variability, indicating global gait worsening in affected participants. The worsening persisted even after the stimulation was turned off. Participants with worse baseline tandem walking performance may be more likely to experience post-DBS gait worsening; the percentage of tandem missteps at baseline was nearly three times higher and tandem walking speeds were approximately 30% slower in participants who experienced gait worsening. However, these differences in tandem walking in persons with gait worsening as compared with those without worsening were not statistically significant. Lead locations and stimulation parameters were similar in participants with and without gait worsening.ConclusionGlobal gait worsening occurred in 25% of participants with unilateral DBS for medication-refractory ET. The effect was present on and off stimulation, likely indicating a microlesion effect.

Style APA, Harvard, Vancouver, ISO itp.

49

Susanto, Susanto, Ipensius Tua Simorangkir, Riska Analia, Daniel Sutopo Pamungkas, Hendawan Soebhakti, Abdullah Sani i Wahyu Caesarendra. "Real-Time Identification of Knee Joint Walking Gait as Preliminary Signal for Developing Lower Limb Exoskeleton". Electronics 10, nr 17 (31.08.2021): 2117. http://dx.doi.org/10.3390/electronics10172117.

Pełny tekst źródła

Streszczenie:

An exoskeleton is a device used for walking rehabilitation. In order to develop a proper rehabilitation exoskeleton, a user’s walking intention needs to be captured as the initial step of work. Moreover, every human has a unique walking gait style. This work introduced a wearable sensor, which aimed to recognize the walking gait phase, as the fundamental step before applying it into the rehabilitation exoskeleton. The sensor used in this work was the IMU sensor, used to recognize the pitch angle generated from the knee joint while the user walks, as information about the walking gait cycle, before doing the investigation on how to identify the walking gait cycle. In order to identify the walking gait cycle, Neural Network has been proposed as a method. The gait cycle identification was generated to recognize the gait cycle on the knee joint. To verify the performance of the proposed method, experiments have been done in real-time application. The experiments were carried out with different processes such as walking on a flat floor, climbing up, and walking down stairs. Five subjects were trained and tested using the system. The experiments showed that the proposed method was able to recognize each gait cycle for all users as they wore the sensor on their knee joints. This study has the potential to be applied on an exoskeleton rehabilitation robot as a further research experiment.

Style APA, Harvard, Vancouver, ISO itp.

50

Wu, Wanchun, Haiyin Deng, Minting Zhong, Zhou Zou, Ruikang Chen, Haotong Tang, Wude Chen, Qiang Lin, Xinger Li i Qinglu Luo. "ENHANCED ACTIVE CONTRACTION OF THE TRANSVERSUS ABDOMINIS DURING WALKING". Revista Brasileira de Medicina do Esporte 27, nr 2 (czerwiec 2021): 201–6. http://dx.doi.org/10.1590/1517-8692202127022020_0032.

Pełny tekst źródła

Streszczenie:

ABSTRACT Introduction: We applied three-dimensional gait analysis to assess the effects of enhanced active contraction of the transversus abdominis (EACTA) during walking. We sought to evaluate the effect of EACTA during walking in order to improve walking quality. Methods: Thirty college students were recruited and trained to perform EACTA during walking. We examined gait parameters under different conditions, including EACTA and habitual ACTA (natural walking with mild contraction of the feedforward mechanism of ACTA, HACTA) during walking using three-dimensional gait analysis. We compared differences in gait parameters under the two walking conditions using SPSS 16.0 statistical software. Results: The following gait parameters were significantly lower under EACTA conditions than under HACTA conditions (P < 0.05): stance phase, 59.151% ± 1.903% vs. 59.825% ± 1.495%; stride time, 1.104 s ± 0.080 s vs. 1.134 s ± 0.073 s:; stance time, 0.656 s ± 0.057 s vs. 0.678 s ± 0.053 s; and swing time, 0.447 s ± 0.028 s vs. 0.454 s ± 0.031 s, respectively. Gait parameters single support phase and mean velocity were significantly higher for EACTA than for HACTA conditions (both P < 0.05). Conclusions: Overall, the results revealed that EACTA during walking can improve gait. This method is simple, and EACTA training during walking to improve gait quality in daily life could provide a positive basis for people to strengthen the transverse abdominal muscle. Level of evidence III; Retrospective comparative study .

Style APA, Harvard, Vancouver, ISO itp.

Artykuły w czasopismach na temat „Walking gait”

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych