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Gait Speed Predicts Incident Disability: A Pooled Analysis.

Subashan Perera1, Kushang V Patel2, Caterina Rosano3

  • 1Division of Geriatric Medicine, University of Pittsburgh, Pennsylvania. ksp9@pitt.edu.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|August 23, 2015
PubMed
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Gait speed in older adults is a strong predictor of future disability and mortality. Faster walking speed is associated with a significantly lower risk of developing dependence in daily activities and mobility issues within three years.

Area of Science:

  • Gerontology
  • Public Health
  • Epidemiology

Background:

  • Functional independence is crucial for aging individuals and society.
  • Prognostic indicators for health promotion and care planning are needed.
  • Existing measures of function lack standardization, limiting evidence.

Purpose of the Study:

  • To investigate gait speed as a prognostic indicator for functional decline in older adults.
  • To assess the predictive value of gait speed for disability and mortality.
  • To analyze gait speed's consistency across diverse demographic and health subgroups.

Main Methods:

  • Pooled analysis of data from seven studies involving 27,220 community-dwelling older adults (≥65 years).
  • Baseline gait speed was measured and participants were followed for incident disability and mortality over three years.
Keywords:
DisabilityGait speedMobilityMortalityPerformance

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  • Outcomes included dependence in bathing/dressing and difficulty with mobility tasks.

    • Main Results:

    • Faster baseline gait speed was associated with lower rates of incident disability.
    • A 0.1 m/s increase in gait speed reduced the risk of bathing/dressing dependence (RR 0.68-0.74) and mobility difficulty (RR 0.73-0.75).
    • Gait speed remained a significant predictor across various subgroups and improved prediction models for disability.

    Conclusions:

    • Gait speed is a reliable predictor of 3-year incidence of dependence in activities of daily living and mobility difficulty in older adults.
    • This simple measure can inform health promotion and care planning for aging populations.
    • Findings highlight the importance of maintaining gait speed for functional longevity.