Gender Differences in Human Muscle and Joint Mechanical Properties During Plantar Flexion in Old Age

Muscle and joint mechanical properties during plantar flexion were investigated in 13 elderly women (EW) (age range 73–83 years) and 15 elderly men (EM) (age range 74–81 years). Maximal torque, at several angular velocities, was measured to construct torque–velocity relationship. This led to the cal...

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Bibliographic Details
Published in:The journals of gerontology. Series A, Biological sciences and medical sciences Biological sciences and medical sciences, 2004-05, Vol.59 (5), p.B441-B448
Main Authors: Ochala, Julien, Valour, Denis, Pousson, Michel, Lambertz, Daniel, Van Hoecke, Jacques
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Aging
Biomechanical Phenomena
Female
Foot - physiology
Gender differences
Human mechanics
Humans
Legs
Male
Muscle Contraction
Muscle, Skeletal - physiology
Muscular system
Older people
Sex Characteristics
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Summary:Muscle and joint mechanical properties during plantar flexion were investigated in 13 elderly women (EW) (age range 73–83 years) and 15 elderly men (EM) (age range 74–81 years). Maximal torque, at several angular velocities, was measured to construct torque–velocity relationship. This led to the calculation of an index of maximal shortening velocity (VImax) at 10% of maximal isometric torque. Two methods were then used to calculate musculotendinous (quick-release movements) and musculoarticular (sinusoidal perturbations) stiffness. In both cases, stiffness was linearly related to torque, and the slope was defined as a stiffness index (SI): SIMT and SIMA, respectively. Maximal torques as well as VImax (p
ISSN:1079-5006
1758-535X
DOI:10.1093/gerona/59.5.B441