Article

Objective assessment of physical activity (PA) in chronic obstructive pulmonary
disease (COPD) is important. We examined the performance of the Omron HJ-720ITC
pedometer. A sample of 176 persons with stable COPD wore the Omron and the
StepWatch Activity Monitor (SAM) in the clinic and the community. A 4 s step
filter in the Omron screens out erroneous intermittent steps; it captures
continuous walking that lasts >4 s. The SAM captures all intermittent and
continuous steps walked. Omron-steps were compared with manually counted steps in
the clinic and with SAM-steps in the community. We calculated the intraclass
correlation coefficient for the first 2 d, the first 3 d, etc., up to 14 d. The Omron registered >/= 90% of the manually counted steps from the in-clinic walk in
155 of 176 subjects (88%). In the community, 47 +/- 16% of SAM-steps were
continuous ones that were captured by the Omron. For the Omron and the SAM, at
least 7 d of monitoring should be used to capture decreases in PA on weekend days
and obtain optimum reliability for all Global Initiative for Chronic Obstructive
Lung Disease stages. The Omron accurately and reliably measures continuous
walking in COPD. The Omron may be ideal for use in PA interventions that promote
continuous walking as exercise.

Langue : ANGLAIS