The force-length curves of the human rectus femoris and gastrocnemius muscles in vivo

Samantha L. Winter, John Henry Challis

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

For a physiologically realistic joint range of motion and therefore range of muscle fiber lengths, only part of the whole muscle force-length curve can be used in vivo; that is, only a section of the force-length curve is expressed. Previous work has determined that the expressed section of the force-length curve for individual muscles can vary between subjects; however, the degree of intersubject variability is different for different muscles. This study determined the expressed section of both the rectus femoris and gastrocnemius-muscles with very different ratios of tendon slack length to muscle fiber optimum length-for 28 nonspecifically trained subjects to test the hypothesis that the value of this ratio affects the amount of variability in the expressed section. The force-length curves of the two muscles were reconstructed from moment-angle data using the method of Herzog & ter Keurs (1988). There was no relationship between the expressed sections of the force-length curve for the two muscles. Less variability was found in the expressed section of the gastrocnemius compared with the rectus femoris, supporting the hypothesis. The lack of relationship between the expressed sections of the two muscles has implications for motor control and for training muscle for rehabilitation.

Original languageEnglish (US)
Pages (from-to)45-51
Number of pages7
JournalJournal of applied biomechanics
Volume26
Issue number1
DOIs
StatePublished - Jan 1 2010

Fingerprint

Quadriceps Muscle
Skeletal Muscle
Muscles
Articular Range of Motion
Tendons
Rehabilitation

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Rehabilitation

Cite this

@article{c1183e42c1bb43c38811979b5b6cd1c4,
title = "The force-length curves of the human rectus femoris and gastrocnemius muscles in vivo",
abstract = "For a physiologically realistic joint range of motion and therefore range of muscle fiber lengths, only part of the whole muscle force-length curve can be used in vivo; that is, only a section of the force-length curve is expressed. Previous work has determined that the expressed section of the force-length curve for individual muscles can vary between subjects; however, the degree of intersubject variability is different for different muscles. This study determined the expressed section of both the rectus femoris and gastrocnemius-muscles with very different ratios of tendon slack length to muscle fiber optimum length-for 28 nonspecifically trained subjects to test the hypothesis that the value of this ratio affects the amount of variability in the expressed section. The force-length curves of the two muscles were reconstructed from moment-angle data using the method of Herzog & ter Keurs (1988). There was no relationship between the expressed sections of the force-length curve for the two muscles. Less variability was found in the expressed section of the gastrocnemius compared with the rectus femoris, supporting the hypothesis. The lack of relationship between the expressed sections of the two muscles has implications for motor control and for training muscle for rehabilitation.",
author = "Winter, {Samantha L.} and Challis, {John Henry}",
year = "2010",
month = "1",
day = "1",
doi = "10.1123/jab.26.1.45",
language = "English (US)",
volume = "26",
pages = "45--51",
journal = "Journal of Applied Biomechanics",
issn = "1065-8483",
publisher = "Human Kinetics Publishers Inc.",
number = "1",

}

The force-length curves of the human rectus femoris and gastrocnemius muscles in vivo. / Winter, Samantha L.; Challis, John Henry.

In: Journal of applied biomechanics, Vol. 26, No. 1, 01.01.2010, p. 45-51.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The force-length curves of the human rectus femoris and gastrocnemius muscles in vivo

AU - Winter, Samantha L.

AU - Challis, John Henry

PY - 2010/1/1

Y1 - 2010/1/1

N2 - For a physiologically realistic joint range of motion and therefore range of muscle fiber lengths, only part of the whole muscle force-length curve can be used in vivo; that is, only a section of the force-length curve is expressed. Previous work has determined that the expressed section of the force-length curve for individual muscles can vary between subjects; however, the degree of intersubject variability is different for different muscles. This study determined the expressed section of both the rectus femoris and gastrocnemius-muscles with very different ratios of tendon slack length to muscle fiber optimum length-for 28 nonspecifically trained subjects to test the hypothesis that the value of this ratio affects the amount of variability in the expressed section. The force-length curves of the two muscles were reconstructed from moment-angle data using the method of Herzog & ter Keurs (1988). There was no relationship between the expressed sections of the force-length curve for the two muscles. Less variability was found in the expressed section of the gastrocnemius compared with the rectus femoris, supporting the hypothesis. The lack of relationship between the expressed sections of the two muscles has implications for motor control and for training muscle for rehabilitation.

AB - For a physiologically realistic joint range of motion and therefore range of muscle fiber lengths, only part of the whole muscle force-length curve can be used in vivo; that is, only a section of the force-length curve is expressed. Previous work has determined that the expressed section of the force-length curve for individual muscles can vary between subjects; however, the degree of intersubject variability is different for different muscles. This study determined the expressed section of both the rectus femoris and gastrocnemius-muscles with very different ratios of tendon slack length to muscle fiber optimum length-for 28 nonspecifically trained subjects to test the hypothesis that the value of this ratio affects the amount of variability in the expressed section. The force-length curves of the two muscles were reconstructed from moment-angle data using the method of Herzog & ter Keurs (1988). There was no relationship between the expressed sections of the force-length curve for the two muscles. Less variability was found in the expressed section of the gastrocnemius compared with the rectus femoris, supporting the hypothesis. The lack of relationship between the expressed sections of the two muscles has implications for motor control and for training muscle for rehabilitation.

UR - http://www.scopus.com/inward/record.url?scp=76149137473&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=76149137473&partnerID=8YFLogxK

U2 - 10.1123/jab.26.1.45

DO - 10.1123/jab.26.1.45

M3 - Article

C2 - 20147757

AN - SCOPUS:76149137473

VL - 26

SP - 45

EP - 51

JO - Journal of Applied Biomechanics

JF - Journal of Applied Biomechanics

SN - 1065-8483

IS - 1

ER -