Standardizing the analysis of physical activity in patients with COPD following a pulmonary rehabilitation program.

ABSTRACT:

Background

There is a wide variability in measurement methodology of physical activity. This study investigated the effect of different analysis techniques on the statistical power of physical activity outcomes after pulmonary rehabilitation.

Methods

Physical activity was measured with an activity monitor armband in 57 patients with COPD (mean ± SD age, 66 ± 7 years; FEV1, 46 ± 17% predicted) before and after 3 months of pulmonary rehabilitation. The choice of the outcome (daily number of steps [STEPS], time spent in at least moderate physical activity [TMA], mean metabolic equivalents of task level [METS], and activity time [ACT]), impact of weekends, number of days of assessment, postprocessing techniques, and influence of duration of daylight time (DT) on the sample size

SUBMITTER: Demeyer H 

PROVIDER: S-EPMC4122275 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature