Effect of step frequency on leg stiffness during running in unilateral transfemoral amputees.

ABSTRACT: Spring-like leg behavior is a general feature of mammalian bouncing gaits, such as running and hopping. Although increases in step frequency at a given running speed are known to increase the stiffness of the leg spring (k_leg) in non-amputees, little is known about stiffness regulation in unilateral transfemoral amputees. In this study, we investigated stiffness regulation at different step frequencies at a given running speed in unilateral transfemoral amputees. We recruited nine unilateral transfemoral amputees wearing running-specific prostheses. They were asked to perform the action of running across a range of step frequencies (±20, ±15, ±10, ±5, and 0% of their preferred step frequency) at a given speed on an instrumented treadmill. The k_leg values were calculat

SUBMITTER: Hobara H 

PROVIDER: S-EPMC7136227 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature