Two Days of Measurement Provides Reliable Estimates of Physical Activity Poststroke: An Observational Study

Abstract

Objective: The aim of this study was to determine the duration of physical activity (PA) monitoring required for reliable measurements following stroke. Design: Single-center, prospective, observational study. Setting: PA was measured in a community setting. Participants: Adults (N=70) poststroke. Main Outcome Measures: The SenseWear armband was used to monitor PA for 5 days (≥10 hours wear per day). Data Analysis: Variance among 2, 3, 4, and 5 days of consecutive measurements for PA variables was examined using intraclass correlation coefficients (ICCs). The minimum number of days to achieve acceptable reliability (ICC ≥0.8) was calculated. Differences between weekdays and weekend days were..