Article

OBJECTIVE: To quantify longitudinal changes in sedentary behavior (ie,
nonexercise seated or lying behavior) after stroke to ascertain whether reducing
sedentary behavior might be a new therapeutic target.
DESIGN: Longitudinal cohort
study of patients with acute stroke who were followed over 1 year. SETTING: Acute
teaching hospital or outpatient clinic, and the community after discharge.
PARTICIPANTS: A convenience sample of patients with acute stroke (N=96; median
age, 72y, interquartile range [IQR]=64-80y; 67% men; median National Institute of
Health Stroke Scale score=2, IQR=1-3) who were assessed at 1, 6, and 12 months
after stroke. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Objective
measures of amount and pattern of time spent in sedentary behavior: total
sedentary time, weighted median sedentary bout length, and fragmentation index.
RESULTS: Stroke survivors were highly sedentary, spending on average 81% of the
time per day in sedentary behavior: median=19.9 hours (IQR=18.4-22.1h), 19.1
hours (17.8-20.8h), and 19.3 hours (17.3-20.9h) at 1, 6, and 12 months,
respectively. Longitudinal changes in sedentary behavior were estimated using
linear mixed effects models. Covariates were age, sex, stroke severity (National
Institute of Health Stroke Scale score), physical capacity (6-minute walk
distance), and functional independence (Nottingham Extended Activities of Daily
Living Questionnaire score). Higher stroke severity and less functional
independence were associated cross-sectionally with more sedentary behavior
(beta=.11, SE=.05, P=.020 and beta=-.11, SE=.01, P<.001, respectively).
Importantly, the pattern of sedentary behavior did not change over the first year
after stroke and was independent of functional ability. CONCLUSIONS: Stroke
survivors were highly sedentary and remained so a year after stroke independently
of their functional ability. Developing interventions to reduce sedentary
behavior might be a potential new therapeutic target in stroke rehabilitation.
CI - Copyright (c) 2015 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS