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Abdominal composition quantified by computed tomography.

R N Baumgartner1, S B Heymsfield, A F Roche

  • 1Division of Human Biology, Wright State University School of Medicine, Dayton, OH.

The American Journal of Clinical Nutrition
|October 1, 1988
PubMed
Summary
This summary is machine-generated.

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Men have more intra-abdominal fat than women, and this fat increases with age in both sexes. Higher body fat percentages correlate with lower muscle and bone mass in the abdomen.

Area of Science:

  • Body composition analysis
  • Medical imaging
  • Gerontology

Background:

  • Understanding age-related changes in body composition is crucial for health.
  • Abdominal fat distribution varies between sexes and with age.

Purpose of the Study:

  • To quantify abdominal composition in a diverse adult population.
  • To investigate sex and age differences in adipose tissue and muscle mass.
  • To explore the relationship between body composition and waist-hip ratio proxies.

Main Methods:

  • Computed tomography (CT) scans of 96 healthy adults (aged 20-83).
  • Analysis of six abdominal and pelvic CT slices for tissue areas (muscle, bone, adipose).
  • Calculation of ratios analogous to waist:hip ratios.

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Main Results:

  • Men exhibited a higher percentage of intra-abdominal adipose tissue than women.
  • Intra-abdominal adipose tissue percentage increased with age in both sexes.
  • Higher adipose tissue percentages were negatively correlated with muscle and bone percentages.
  • Waist:hip ratio proxies correlated positively with abdominal fat and negatively with muscle/bone in women, but not in men.

Conclusions:

  • Abdominal fat accumulation and loss of muscle/bone mass are significant age-related changes.
  • Sex differences in fat distribution are pronounced, with men having more visceral fat.
  • Body composition metrics are important indicators of health and aging, particularly in women.