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Muscular strength and physical function.

P A Brill1, C A Macera, D R Davis

  • 1School of Public Health, University of South Carolina, Columbia 29208, USA.

Medicine and Science in Sports and Exercise
|February 29, 2000
PubMed
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Maintaining muscular strength may reduce functional limitations later in life. Higher strength levels were associated with lower odds of reporting limitations in men and women, suggesting strength is key for lifelong function.

Area of Science:

  • Gerontology
  • Exercise Physiology
  • Public Health

Background:

  • Functional limitations impact daily living and quality of life.
  • Muscular strength and endurance are key components of physical health.
  • Understanding factors that prevent functional decline is crucial for aging populations.

Purpose of the Study:

  • To investigate the association between baseline muscular strength and endurance and the prevalence of functional limitations.
  • To determine if higher levels of muscular strength predict fewer functional limitations at follow-up.

Main Methods:

  • A cohort of 3,069 men and 589 women (aged 30-82) underwent strength assessments (bench press, leg press, sit-ups) and cardiovascular testing.
  • Participants were categorized into high strength groups based on composite index scores.

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  • Functional limitations were assessed via a mail-back survey after an average 5-year follow-up.

    • Main Results:

    • After 5 years, 7% of men and 12% of women reported functional limitations.
    • Men with high strength had 44% lower odds (OR=0.56) of reporting limitations.
    • Women with high strength had 46% lower odds (OR=0.54) of reporting limitations, though not statistically significant.

    Conclusions:

    • Maintenance of muscular strength throughout life may decrease the prevalence of functional limitations.
    • Strength training could be a viable strategy to promote healthy aging and independence.
    • Further research in diverse populations is needed to confirm these findings.