Accelerometer- versus questionnaire-based assessment of physical activity and their changes over time in patients with COPD.

ABSTRACT:

Background and objective

Physical activity (PA) is an important outcome parameter in patients with COPD regarding hospitalizations and mortality. Both objective assessment by accelerometers and self-evaluation by questionnaires were used in studies investigating PA in COPD. Whether self-reported questionnaires can adequately reflect PA and its changes over time compared to objective assessments has not been thoroughly investigated in COPD. In this COPD cohort study, we evaluated whether PA measured by accelerometer and its annual changes can also be assessed by self-reported questionnaires.

Methods

In 178 COPD patients with at least two assessments of PA, the agreement between objectively measured and self-reported activity was analyzed by Bland-Altman plots. Daily PA was as

SUBMITTER: Sievi NA 

PROVIDER: S-EPMC5391993 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature