Foot and shoe responsible for majority of soft tissue work in early stance of walking

NewsBot · Feb 17, 2019

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Foot and shoe responsible for majority of soft tissue work in early stance of walking.
Honert EC, Zelik KE.
Hum Mov Sci. 2019 Feb 12;64:191-202

Soft tissues located throughout the human body are known to perform substantial mechanical work through wobbling and deforming, particularly following foot impacts with the ground. Yet, it is not known which specific tissues in the body are responsible for the majority of the soft tissue work. The purpose of this study was to quantify how much of the soft tissue work after foot contact was due to the foot and shoe, vs. from tissues elsewhere in the body, and how this distribution of work changed with walking speed and slope. We collected ground reaction forces and whole-body kinematics while ten subjects walked at five speeds (0.8-1.6 m/s) and on seven different slopes (9 degrees downhill to 9 degrees uphill). Using a previously-published Energy-Accounting analysis, we found that the majority of the soft tissue work during early stance was due to deformation of the foot and shoe. The percentage of work did not vary significantly with speed but did vary significantly with slope. The foot and shoe were responsible for ∼60-70% of the soft tissue work during level and uphill walking, and 80-90% during downhill walking.
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