@ARTICLE{Safaei-Pour, author = {Safaei-Pour, Zahra and Esteki, Ali and Tabatabaei-Ghomsheh, Farhad and Mousavi, Seyyed Mohammad Ebrahim and }, title = {Analysis of the Ankle Moment-Angle Curve in Different Gait Speeds and Phases for Designing Ankle-Foot Prosthesis}, volume = {14}, number = {4}, abstract ={Objective: Aim of this study was to analysis the ankle moment-angle relation and its characteristics at different gait speeds and phases for using in prosthetic ankle-foot design. Materials & Methods: This was a cross-sectional analytic study in which 20 participants were chosen with assessable sampling method. Gait analysis at different speeds was performed with two force-plates and five high speed cameras. Ankle characteristics including quasi-stiffness and work were estimated at three periods of stance phase based on moment-angle loop. Mean differences were analyzed with repeated measure ANOVA and regression analysis was performed to fit the linear model to the data. Results: Moment-angle curve was clockwise at slower speeds and turned counter-clockwise while speed increased. The best fitted line to the work-walking speed curve had R2=0.81. There were significant differences in quasi-stiffness between fast and normal speed and slower speeds (P }, URL = {http://rehabilitationj.uswr.ac.ir/article-1-1277-en.html}, eprint = {http://rehabilitationj.uswr.ac.ir/article-1-1277-en.pdf}, journal = {Archives of Rehabilitation}, doi = {}, year = {2014} }