• 한국운동역학회지
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• 제26권3호
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• pp.309-314
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• 2016

Objective: There are no guidelines for choosing appropriate gait assistive devices. The aim of this study was to evaluate gait assistive devices in patients with Parkinson's disease. Method: We evaluated 15 individuals with Parkinson's disease who did or did not use one of two different devices including canes and two-wheeled walkers. Data were collected using the GAITRite system. Results: Participants in the group using canes and two-wheeled walkers had significantly increased double support time and decreased gait velocity, normalized gait velocity, and stride length compared with those who did not. Participants who used a two-wheeled walker had significantly decreased gait velocity, normalized gait velocity, and stride length compared with those who used a cane. Furthermore, participants who used a two-wheeled walker had significantly decreased coefficients of variation for step time, stride length, and swing time compared with those who used a cane. Conclusion: Our results indicated that the two-wheeled walker offered the most consistent advantages for decreasing the risk of falling.

• 대한물리치료과학회지
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• 제30권4호
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• pp.1-8
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• 2023

Background: This study evaluates the usability of the Motion-Tracking Gait Assistive Walker (MTGAW) designed for elderly individuals and those with disabilities, identifying areas for improvement through interviews with physical and occupational therapists. Design: A survey study involves the usability test for MTGAW. Methods: Usability evaluations were conducted with 37 physical therapists and occupational therapists. The process included explanation, product usage, satisfaction surveys, and interviews. A satisfaction survey covering 19 items across safety, maneuverability, usability, and management areas was administered. Individual interviews identified areas for improvement. Results: Overall, high satisfaction was reported across the four areas, but interviews highlighted the need for improvements, such as addressing discomfort due to slow speed and enhancing safety measures to prevent rear-end falls. Adjusting the walker's height and width to suit the user's physique was also suggested. Conclusion: MTGAW enhances walking support and hand movement freedom but needs refinement in speed control, fall prevention, and customization based on the user physique. Future efforts should focus on developing an improved MTGAW, considering recommendations from physical therapy experts, and conducting studies to analyze its clinical effectiveness for commercialization.

• 제어로봇시스템학회논문지
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• 제16권9호
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• pp.823-826
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• 2010

In this study, the control method of assistive robot was developed for the elderly. The control method of gait-assistant-robot was proposed considering the change of COP (Center of Pelves), BOS (Base of Support) and comparative analysis of the moving velocity for the elderly. We analyzed the movement of COP of the body and its velocity of the elderly equipped with manual walker and gait-assistant-robot. As a result, change in COP was greater from left to right than from anterior to posterior; also, the average velocity of the movement of COP and manual walker for manual walker gait was 0.7(m/s). Therefore, it is necessary to concern more on the left-right balance and synchronization of the velocity of COP.

• 한국콘텐츠학회논문지
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• 제11권4호
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• pp.207-214
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• 2011

이 연구는 건강한 성인을 대상으로 30%체중지지 수행력이 되먹임 형태와 보행보조도구에 따라 차이가 있는지를 알아보고, 이를 통해 효과적인 체중지지 훈련방법을 제안하기 위해 실시되었다. 20명의 건강한 성인이 참여하였으며, 겨드랑이 목발과 바퀴보행기를 이용하여 3점 보행을 하는 동안 오른쪽 발에 체중의 30%만 부하하도록 하였다. 훈련을 위해 동적 되먹임과 정적 되먹임을 제공하였다. 훈련 직후와 훈련 3일 후, 보행 동안 %체중지지를 측정하기 위해 힘판을 이용하였고 보행관련 변수를 측정하기 GAITRite를 사용하였다. 30%체중지지의 정확성은 겨드랑이 목발을 이용하고 동적 되먹임을 받았을 때가 가장 정확하였다(p>0.05). 보행보조도구와 되먹임 형태에 따라 %체중지지는 유의한 차이를 보였으며(p<0.05), 훈련 직후와 훈련 3일후의 %체중지지는 유의한 차이를 보이지 않았다(p>0.05). 또한 보행보조도구에 따라 보행속도와 입각기비율이 유의한 차이를 보였다(p<0.05). 따라서 효과적인 체중지지 훈련을 위해서는 가능한 경우 겨드랑이 목발을 이용하여 동적 되먹임을 통한 %체중지지를 교육하는 것이 필요할 것으로 생각된다.

• 재활복지공학회논문지
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• 제8권4호
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• pp.259-265
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• 2014

본 논문은 보행의지를 파악하기 위해 IR 센서 기반 보행보조기를 이용하여 보행 시 슬관절 전방변위 측정과 하지의 근육활성도를 고찰하였다. 슬관절 전방변위 측정을 위해 보행보조기에 IR센서를 장착하였고, 근전도 (Bagnoli-8ch, Delsys Inc, USA)장비를 이용하여 대퇴직근, 대퇴이두근, 전경골근, 비복근을 측정 하였다. 실험에 참가한 피험자들은 성인 8명(나이 $23.7{\pm}0.5years$, 신장 $175.4{\pm}2.3cm$, 체중 $70.6{\pm}5.6kg$)이며 매주 30분씩 총 3주간 진행되었다. 보행 시 경사조건과 보행 속도의 증가에 따라서 슬관절 전방변위가 변화되는 결과를 확인할 수 있었다. 또한 근육활성도 결과, 전방경사 시 대퇴부 근육의 활성도가 증가하였고 후방경사 시 하퇴부 근육이 많이 활성화 되어 IR센서 결과와 유사한 경향을 확인할 수 있었다.