Comparison of pedometer and activity diary for measurement of physical activity in chronic obstructive pulmonary disease

Abstract

■PURPOSE: Precise, inexpensive tools for measuring physical activity levels are important for developing strategies to improve symptoms and enhance quality of life in chronic obstructive pulmonary disease (COPD). Self-report questionnaires and diaries have been used in many populations with variable results. The pedometer is widely recognized as a valid and reliable objective measurement tool, but it has not been well tested in COPD. This study aimed to determine the relationship between free-living physical activity recorded in a daily diary and that measured by using a pedometer in patients with COPD. ■METHODS: Participants with COPD (n = 80) recorded physical activity over 7 days. Cumulat..