Prognostic value of usual gait speed in well-functioning older people--results from the Health, Aging and Body Composition Study
- Cesari, M.
- Kritchevsky, S.B.
- Penninx, B.W.J.H.
- Nicklas, B.J.
- Simonsick, E.M.
- Newman, A.B.
- Tylavsky, F.A.
- Brach, J.S.
- Satterfield, S.
- Bauer, D.C.
- Visser, M.
- Rubin, S.M.
- Harris, T.B.
- Pahor, M.
DOIAbstract
OBJECTIVES: To define clinically relevant cutpoints for usual gait speed and to investigate their predictive value for health-related events in older persons. DESIGN: Prospective cohort study. SETTING: Health, Aging and Body Composition Study. PARTICIPANTS: Three thousand forty-seven well-functioning older persons (mean age 74.2). MEASUREMENTS: Usual gait speed on a 6-m course was assessed at baseline. Participants were randomly divided into two groups to identify (Sample A; n = 2,031) and then validate (Sample B; n = 1,016) usual gait-speed cutpoints. Rates of persistent lower extremity limitation events (mean follow-up 4.9 years) were calculated according to gait speed in Sample A. A cutpoint (defining high- (<1 m/s) and low risk (≥1 m/s)...
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