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Related Experiment Videos

Relation between body composition, fat distribution, and lung function in elderly men.

H Santana1, E Zoico, E Turcato

  • 1Cattedra di Geriatria and the Istituto di Medicina Interna, University of Verona, Verona, Italy.

The American Journal of Clinical Nutrition
|March 29, 2001
PubMed
Summary
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In elderly men, increased body fat and poorer fat distribution are linked to reduced lung function. Higher skeletal muscle mass is associated with better lung capacity, highlighting body composition

Area of Science:

  • Gerontology
  • Pulmonology
  • Body Composition Analysis

Background:

  • Aging is associated with detrimental changes in body composition, including increased fat mass and visceral fat, alongside decreased skeletal muscle mass.
  • Concurrent declines in lung function are observed in the elderly population.
  • These age-related body composition shifts may contribute to pulmonary impairment in older adults.

Purpose of the Study:

  • To investigate the relationship between body composition, fat distribution, and lung function in elderly men.
  • To identify specific body composition parameters and fat distribution metrics that correlate with pulmonary function in this demographic.

Main Methods:

  • A cross-sectional study involving 97 men aged 67-78 years.
  • Body composition assessed using dual-energy X-ray absorptiometry.

Related Experiment Videos

  • Fat distribution evaluated via waist/hip circumferences, waist-to-hip ratio, and sagittal abdominal diameter (SAD).
  • Lung function measured by spirometry (FVC, FEV1) and a 6-minute walk test; leg strength also assessed.

    • Main Results:

    • Significant negative correlations were observed between adiposity, fat distribution indices (especially SAD), and lung function (FVC, FEV1).
    • Fat-free mass showed a positive correlation with FVC.
    • After adjusting for covariates, SAD, percentage body fat, and fat mass remained significant predictors of FVC and FEV1.
    • Lower lung function was evident in men with the lowest fat-free mass tertiles.

    Conclusions:

    • Elderly men exhibit a significant association between their body composition, fat distribution, and lung function.
    • Sagittal abdominal diameter and fat-free mass are key determinants of lung function in older men.
    • These findings underscore the importance of body composition and visceral adiposity in maintaining pulmonary health in aging males.