Childers W Lee, Kistenberg Robert S, Gregor Robert J
School of Applied Physiology, Georgia Institute of Technology, Atlanta, Georgia, USA.
J Appl Biomech. 2011 Nov;27(4):314-21. doi: 10.1123/jab.27.4.314. Epub 2011 Jun 2.
Cyclists with unilateral transtibial amputation (CTA) provide a unique model to study integration of the neuromuscular and bicycle systems while having the option to modify this integration via the properties of the prosthesis. This study included eight CTA and nine intact cyclists. The cyclists pedaled on a stationary bicycle with instrumented force pedals. The CTA group pedaled with a stiff or flexible prosthetic foot during a simulated time trial and a low difficulty condition. During the time trial condition, pedaling with the flexible foot resulted in force and work asymmetries of 11.4% and 30.5%, the stiff foot displayed 11.1% and 21.7%, and the intact group displayed 4.3% and 4.2%, respectively. Similar trends were shown in the low difficulty condition. These data suggest foot stiffness has an effect on cycling symmetry in amputees.
单侧经胫骨截肢的自行车骑行者（CTA）提供了一个独特的模型，用于研究神经肌肉系统和自行车系统的整合，同时可以通过假肢的特性来改变这种整合。本研究包括8名CTA骑行者和9名健全骑行者。骑行者在配备测力踏板的固定自行车上蹬踏。CTA组在模拟计时赛和低难度条件下，使用硬或软的假脚蹬踏。在计时赛条件下，使用软假脚蹬踏时，力量和功的不对称率分别为11.4%和30.5%，硬假脚分别为11.1%和21.7%，健全组分别为4.3%和4.2%。在低难度条件下也显示出类似趋势。这些数据表明，假脚硬度对截肢者的骑行对称性有影响。
