tailieunhanh - báo cáo khoa học: " Overground walking speed changes when subjected to body weight support conditions for nonimpaired and post stroke individuals"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Overground walking speed changes when subjected to body weight support conditions for nonimpaired and post stroke individuals | Burgess et al. Journal of NeuroEngineering and Rehabilitation 2010 7 6 http content 7 1 6 J NER JOURNAL OF NEUROENGINEERING AND REHABILITATION RESEARCH Open Access Overground walking speed changes when subjected to body weight support conditions for nonimpaired and post stroke individuals Jamie K Burgess 1 Gwendolyn C Weibel2 and David A Brown1 Abstract Background Previous research has shown that body weight support BWS has the potential to improve gait speed for individuals post-stroke. However body weight support also reduces the optimal walking speed at which energy use is minimized over the gait cycle indicating that BWS should reduce walking speed capability. Methods Nonimpaired subjects and subjects post-stroke walked at a self-selected speed over a 15 m walkway. Body weight support BWS was provided to subjects at 0 10 20 30 and 40 of the subject s weight while they walked overground using a robotic body weight support system. Gait speed cadence and average step length were calculated for each subject using recorded data on their time to walk 10 m and the number of steps taken. Results When subjected to greater levels of BWS self-selected walking speed decreased for the nonimpaired subjects. However subjects post-stroke showed an average increase of 17 in self-selected walking speed when subjected to some level of BWS compared to the 0 BWS condition. Most subjects showed this increase at the 10 BWS level. Gait speed increases corresponded to an increase in step length but not cadence. Conclusions The BWS training environment results in decreased self-selected walking speed in nonimpaired individuals however self-selected overground walking speed is facilitated when provided with a small percentage of body weight support for people post-stroke. Background Locomotor disability remains a major obstacle to community function in persons with chronic post-stroke hemiplegia. This disability is best characterized by a reduced gait speed that is

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