Muscle-specific indices to characterise the functional behaviour of human lower-limb muscles during locomotion

JOURNAL OF BIOMECHANICS

卷:89

Article

Lai, Adrian K. M.¹  Biewener, Andrew A.²  Wakeling, James M.¹ 

[1] Simon Fraser Univ, Dept Biomed Physiol & Kinesiol, Burnaby, BC, Canada

[2] Harvard Univ, Dept Organism & Evolutionary Biol, Concord Field Stn, Bedford, MA USA

关键词: Muscle;    Work loop;    Simulations;    Mechanical work;    Walking;    Running;   

DOI  :  10.1016/j.jbiomech.2019.04.027

来源: Elsevier

【 摘 要 】

The mechanical output of a muscle may be characterised by having distinct functional behaviours, which can shift to satisfy the varying demands of movement, and may vary relative to a proximo-distal gradient in the muscle-tendon architecture (MTU) among lower-limb muscles in humans and other terrestrial vertebrates. We adapted a previous joint-level approach to develop a muscle-specific index-based approach to characterise the functional behaviours of human lower-limb muscles during movement tasks. Using muscle mechanical power and work outputs derived from experimental data and computational simulations of human walking and running, our index-based approach differentiated known distinct functional behaviours with varying mechanical demands, such as greater spring-like function during running compared with walking; with anatomical location, such as greater motor-like function in proximal compared with the distal lower-limb muscles; and with MTU architecture, such as greater strut-like muscles fibre function compared with the MTh in the ankle plantarfiexors. The functional indices developed in this study provide distinct quantitative measures of muscle function in the human lower-limb muscles during dynamic movement tasks, which may be beneficial towards tuning the design and control strategies of physiologically-inspired robotic and assistive devices. (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

Free