Feasibility of using pedometers to measure daily step counts in cystic fibrosis and an assessment of its responsiveness to changes in health state

2012

BACKGROUND: Evaluation of physical activity is integral to the assessment of daily physical function and a potential objective outcome measure for clinical trials. We evaluated the feasibility of using pedometers to measure physical activity in adolescents and adults with cystic fibrosis (CF) and assessed the responsiveness of its measurement to changes in health state. METHODS: Participants were recruited through two CF clinics in Seattle, WA. Subjects were instructed to use their pedometer for at least one ill and two well periods (each lasting 7days). Step rate was calculated as steps per hour of use. Daily symptoms were also recorded using the CF Respiratory Symptom Diary (CFRSD). Generalized estimating equation linear regression was used to compare mean step rate between health states and by self-reported symptom category. RESULTS: We enrolled 30 CF patients with a mean (SD) age of 22 (7) years and a mean forced expiratory volume in 1s (FEV(1)) of 57% (25%) predicted. The mea

Peer-reviewed publications in scholarly journals Published/In Press

Professionals

[email protected]

N/A