A comparison of two Hill-type skeletal muscle models on the construction of medial gastrocnemius length-tension curves in humans in vivo

Journal of Applied Physiology
B W HoffmanA G Cresswell

Abstract

Human length-tension curves are traditionally constructed using a model that assumes passive tension does not change during contraction (model A) even though the animal literature suggests that passive tension can decrease (model B). The study's aims were threefold: 1) measure differences in human medial gastrocnemius length-tension curves using model A vs. model B, 2) test the reliability of ultrasound constructed length-tension curves, and 3) test the robustness of fascicle length-generated length-tension curves to variations between the angle and fascicle length relationship. An isokinetic dynamometer manipulated and measured ankle angle while ultrasound was used to measure medial gastrocnemius fascicle length. Supramaximal tibial nerve stimulation was used to evoke resting muscle twitches. Length-tension curves were constructed using model A {angle-torque [A-T((A))], length-torque [L-T((A))]} or model B {length-torque [L-T((B))]} in three conditions: baseline, heel-lift (where the muscle was shortened at each angle), and baseline repeated 2 h later (+2 h). Length-tension curves constructed from model B differed from those produced via model A, indicated by a significant increase in maximum torque (≈23%) when using L-T((B)) ...Continue Reading

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Citations

Jul 28, 2013·Experimental Gerontology·Lee A BarberGlen A Lichtwark
Dec 24, 2017·Scandinavian Journal of Medicine & Science in Sports·N BeaumatinS Dorel
Jul 29, 2017·The Journal of Experimental Biology·Lilian LacourpailleFrançois Hug
May 24, 2018·Scandinavian Journal of Medicine & Science in Sports·P A PincheiraG A Lichtwark
Jun 23, 2018·Medicine and Science in Sports and Exercise·Hugo HauraixLaurent Vigouroux
Sep 22, 2018·The Journal of Experimental Biology·Marion CrouzierFrançois Hug
Jul 28, 2013·Journal of Applied Physiology·Hugo HauraixSylvain Dorel
Jul 21, 2016·Medicine and Science in Sports and Exercise·Ben W HoffmanGlen A Lichtwark
Oct 3, 2015·Journal of Applied Physiology·Hugo HauraixSylvain Dorel
Jul 31, 2019·Journal of Strength and Conditioning Research·Dustin J OranchukJohn B Cronin
Apr 6, 2013·Journal of Applied Physiology·B W HoffmanG A Lichtwark
Nov 27, 2019·Medicine and Science in Sports and Exercise·Marion CrouzierFrançois Hug
Mar 6, 2021·Sports Biomechanics·Dustin J OranchukJohn B Cronin

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