Published in

Oxford University Press, The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences, 3(69A), p. 354-362, 2013

DOI: 10.1093/gerona/glt114

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Change in fast walking speed preceding death: results from a prospective longitudinal cohort study.

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Walking speed (WS) predicts mortality. However, it is unclear if decline in WS increases prior to death. We examined whether (a) WS declined faster in persons who died during the follow-up compared with those who remained alive and (b) adding change in WS to a model including age, sex, and baseline WS improved prediction of mortality. Data are from 4,016 participants of the Dijon center of the Three-City study (France), aged 65-85 years. Fast WS (FWS) was measured up to five times over a 12-year period. Mortality was ascertained until 2012. Linear mixed models using a backward time scale showed that FWS declined faster in 908 participants who died during the follow-up (annual change = -0.031 m/s) than in those who survived (-0.021 m/s), corresponding to a difference of -0.009 (95% confidence interval = -0.013 to -0.005) m/s. Compared with "normal" change in FWS (annual change ≥-0.04 m/s), "substantial" decline (