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Segmental bioelectrical impedance analysis for Korean older population with cold pattern.

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Summary

Whole-body composition and bioimpedance analysis reveal associations with cold pattern (CP) in older adults. These indicators, particularly reduced body cell mass and altered water distribution, are more pronounced in women.

Keywords:
body compositioncellular water disturbancecold pattern recognitionsegmental bioimpedance analysissex difference

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Area of Science:

  • Gerontology
  • Body Composition Analysis
  • Bioimpedance

Background:

  • Cold pattern (CP) is a condition affecting older adults, potentially linked to physiological changes.
  • Understanding the relationship between body composition and CP is crucial for identifying at-risk individuals.

Purpose of the Study:

  • To investigate the association between whole-body composition and segmental bioimpedance variables with cold pattern (CP) in older adults.
  • To explore sex-specific differences in these associations.

Main Methods:

  • A study involving 667 older individuals categorized into CP and non-CP groups.
  • Assessment of seven body composition variables and segmental bioimpedance parameters using a multifrequency bioimpedance analyzer.
  • Statistical analyses including univariate and multivariate regression, conducted separately for men and women.

Main Results:

  • Individuals with CP, across both sexes, exhibited smaller body size, lower body mass index, and reduced basal metabolic rate.
  • Significant reductions in body lean mass, total body water, and altered intra-to-extracellular water ratio were observed in the CP group.
  • Segmental bioimpedance analysis showed significant associations between resistance ratios, phase angles, and CP incidence, particularly in women, but not in men.

Conclusions:

  • Abnormal cellular water distribution and reduced body cell mass/strength are linked to CP prevalence in older adults.
  • These bioimpedance markers are effective indicators for identifying CP, with findings being more pronounced in women.
  • The study highlights the potential of body composition and bioimpedance analysis for CP screening in the elderly population.