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Subcutaneous fat distribution in adolescents

M E Ramirez1

  • 1Cardiovascular Genetics Research Clinic, University of Utah, Salt Lake City 84108.

Human Biology
|October 1, 1993
PubMed
Summary

Sibling resemblance in adolescent fatness and fat distribution is significant, with genetics playing a major role in subcutaneous fat thickness. These patterns are evident early in adolescence.

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Area of Science:

  • Human genetics
  • Adolescent health
  • Body composition

Background:

  • Understanding familial resemblance in body composition is crucial for public health.
  • Adolescence is a critical period for the development of fatness and fat distribution patterns.
  • Previous research suggests genetic and environmental influences on body fat, but sibling resemblance needs further exploration.

Purpose of the Study:

  • To investigate sibling resemblance in relative fatness and subcutaneous fat distribution among healthy adolescents.
  • To determine the genetic component influencing subcutaneous fat thickness and fat distribution patterns.

Main Methods:

  • Utilized anthropometric measurements, bioelectric impedance, and ultrasound imaging in 122 nuclear families.
  • Defined fat distribution patterns using indexes derived from subcutaneous fat measurements.
  • Employed adjusted Z scores for age- and sex-related changes and analysis of variance for resemblance calculations.

Main Results:

  • Significant family resemblance was observed for the overall level of fatness.
  • Like-sex siblings showed significant resemblance in fat distribution patterns.
  • Subcutaneous fat thickness demonstrated a strong genetic component, accounting for 60-65% of the variance.

Conclusions:

  • Sibling resemblance in fatness and fat distribution is significant, indicating a strong genetic influence.
  • Fat distribution patterns are established and observable from early adolescence.
  • Findings highlight the importance of genetic factors in adolescent body composition.

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