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Performance-based measures of physical function for high-function populations.

J David Curb1, Clementina D Ceria-Ulep, Beatriz L Rodriguez

  • 1Pacific Health Research Institute, 846 South Hotel Street, Honolulu, HI 96813, USA. jdcurb@phrihawaii.org

Journal of the American Geriatrics Society
|May 16, 2006
PubMed
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This study found that many current physical function tests lack reliability. A new recommended battery of simple, reliable performance tests can effectively assess overall function in clinical and research settings.

Area of Science:

  • Gerontology
  • Rehabilitation Science
  • Biomedical Engineering

Background:

  • Performance-based measures are crucial for assessing physical function in clinical and research settings.
  • Existing measures often lack the reliability and broad applicability needed for diverse populations.
  • Improving these assessments is vital for accurate functional status evaluation.

Purpose of the Study:

  • To enhance and expand the utility of performance-based functional measures.
  • To identify reliable and discriminating tests for assessing physical function across a wide range of abilities.
  • To develop a recommended battery of tests suitable for clinical and research applications.

Main Methods:

  • A cross-sectional, repeated-measures study was conducted in a research clinic.

Related Experiment Videos

  • A population-based sample of 203 Japanese Americans (aged 35-71) without significant functional impairments participated.
  • Measures included standard and automated tests of physical function (balance, strength), cognitive function, lifestyle, and physical activity.

    • Main Results:

    • The unassisted one-leg stand demonstrated reliability (rc=0.69) and functional discrimination.
    • A combined balance test (FNHANES protocol on foam pad + balance platform with eyes closed) showed highest reliability and discrimination.
    • The strength chair (upper/lower extremity tests) and timed chair stands yielded high reliability coefficients (rcs 0.88-0.96 and reliable, respectively).
    • The 6-minute walk test also showed high reliability (rc=0.90).

    Conclusions:

    • Many commonly used performance-based functional tests lack sufficient reliability and discriminating power.
    • A newly recommended battery, including single-leg stand, specific balance platform tests, strength chair measures, timed chair stands, and the 6-minute walk, offers good reliability and discrimination.
    • These validated, simple tests can be readily implemented in clinical and research settings for efficient global functional assessment.