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Cited by 285

The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Specific strength and voluntary muscle activation in young and elderly women and men

Kent-Braun, Jane A., Ng, Alexander V.·1999·Journal of Applied Physiology
DOI 10.1152/jappl.1999.87.1.22
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Abstract

The extents to which decreased muscle size or activation are responsible for the decrease in strength commonly observed with aging remain unclear. Our purpose was to compare muscle isometric strength [maximum voluntary contraction (MVC)], cross-sectional area (CSA), specific strength (MVC/CSA), and voluntary activation in the ankle dorsiflexor muscles of 24 young (32 ± 1 yr) and 24 elderly (72 ± 1 yr) healthy men and women of similar physical activity level. Three measures of voluntary muscle activation were used: the central activation ratio [MVC/(MVC + superimposed force)], the maximal rate of voluntary isometric force development, and foot tap speed. Men had higher MVC and CSA than did women. Young men had higher MVC compared with elderly men [262 ± 19 (SE) vs. 197 ± 22 N, respectively], whereas MVC was similar in young and elderly women (136 ± 15 vs. 149 ± 16 N, respectively). CSA was greater in young compared with elderly subjects. There was no age-related impairment of specific strength, central activation ratio, or the rate of voluntary force development. Foot tap speed was reduced in elderly (34 ± 1 taps/10 s) compared with young subjects (47 ± 1 taps/10 s). These results suggest that isometric specific strength and the ability to fully and rapidly activate the dorsiflexor muscles during a single isometric contraction were unimpaired by aging. However, there was an age-related deficit in the ability to perform rapid repetitive dynamic contractions.

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Metadata

Authors
Kent-Braun, J. A., & Ng, A. V.
Venue
Journal of Applied Physiology
Publisher
American Physiological Society
Published
1999-07-01
Volume
87
Issue
1
Pages
22-29
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
DOI
10.1152/jappl.1999.87.1.22
OpenAlex
W1959216270
Cited by
285
References
4
FWCI
8.06
Type
journal article
Language
en
Open access
closed

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