Soft tissues store and return mechanical energy in human running

Journal of Biomechanics
R C Riddick, A D Kuo

Abstract

During human running, softer parts of the body may deform under load and dissipate mechanical energy. Although tissues such as the heel pad have been characterized individually, the aggregate work performed by all soft tissues during running is unknown. We therefore estimated the work performed by soft tissues (N=8 healthy adults) at running speeds ranging 2-5 m s(-1), computed as the difference between joint work performed on rigid segments, and whole-body estimates of work performed on the (non-rigid) body center of mass (COM) and peripheral to the COM. Soft tissues performed aggregate negative work, with magnitude increasing linearly with speed. The amount was about -19 J per stance phase at a nominal 3 m s(-1), accounting for more than 25% of stance phase negative work performed by the entire body. Fluctuations in soft tissue mechanical power over time resembled a damped oscillation starting at ground contact, with peak negative power comparable to that for the knee joint (about -500 W). Even the positive work from soft tissue rebound was significant, about 13 J per stance phase (about 17% of the positive work of the entire body). Assuming that the net dissipative work is offset by an equal amount of active, positive muscle...Continue Reading

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Citations

Sep 17, 2019·Medicine and Science in Sports and Exercise·Matthew I BlackJonathan P Folland
Jul 14, 2018·Scientific Reports·Luke A KellyDominic J Farris
Apr 9, 2019·Journal of the Royal Society, Interface·Ryan RiddickLuke A Kelly
May 10, 2017·Journal of Biomechanics·Anahid EbrahimiSteven J Stanhope
Jun 3, 2021·Journal of Biomechanics·Samuel E Masters, John H Challis
Jul 2, 2021·Experimental Physiology·Leonardo A Peyré-TartarugaPaola Zamparo
Aug 6, 2021·Scientific Reports·Ryan T SchroederJohn E A Bertram
Nov 24, 2021·PLoS Computational Biology·Ryan T Schroeder, Arthur D Kuo

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