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Related Experiment Videos

Functional base of support decreases with age

M B King1, J O Judge, L Wolfson

  • 1Department of Medicine, University of Connecticut Health Center, Farmington.

Journal of Gerontology
|November 1, 1994
PubMed
Summary

Functional base of support (FBOS) declines with age, increasing fall risk in older adults. This reliable measure is not linked to sway, offering potential for fall prediction.

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Area of Science:

  • Gerontology
  • Biomechanics
  • Kinesiology

Background:

  • Age-related balance decline elevates injurious fall risk in older adults.
  • Functional base of support (FBOS) assesses controlled center of mass movement, crucial for daily activities.
  • Understanding FBOS-age relationship and its reliability is vital for fall prevention.

Purpose of the Study:

  • To investigate the relationship between functional base of support (FBOS) and age.
  • To establish the reliability of FBOS measurement in diverse age groups.

Main Methods:

  • 113 community-dwelling adults (20-91 years) participated.
  • Functional base of support (FBOS) measured using a force platform.
  • Forward lean, backward lean, and sway during standing and leaning were recorded.

Main Results:

  • Mean FBOS was significantly lower in individuals aged 60+ (.42 ± .12) compared to younger adults (.60 ± .07).
  • FBOS declined approximately 16% per decade after age 60 and showed increased variability.
  • Forward and backward lean distances decreased with age, while sway measures correlated with each other but not FBOS.

Conclusions:

  • Functional base of support (FBOS) is a reliable measure of balance.
  • FBOS decreases in older adults, independent of increased sway.
  • FBOS shows potential as a tool to track balance changes and predict fall risk in the elderly.

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