title: Use of pedometer and Internet-mediated walking program in patients with chronic obstructive pulmonary disease.
abstract: We evaluated an Internet-mediated, pedometer-based program to promote walking in chronic obstructive pulmonary disease (COPD). First, we assessed the accuracy of the Omron HJ-720ITC pedometer (OMRON Healthcare, Inc; Bannockburn, Illinois) in 51 persons with COPD. The Bland-Altman plot showed a median difference of 3 steps (5th and 95th quintiles, -8.0 and 145.0, respectively). We calculated percent difference = ([manual - Omron step counts]/manual step counts) x 100. Variability in percent difference occurred at the lowest usual walking speeds. At speeds <or= 0.94 m/s, the mean +/- standard deviation percent difference was 14 +/- 26%. Nevertheless, the Omron captured >80% of the manual step counts in 20 of the 23 persons with walking speed <or= 0.94 m/s. Second, we examined step counts in 24 persons with COPD who used the Omron and an Internet-mediated, 16-week walking program. At baseline, participants with COPD walked an average of 3429 +/- 1502 steps per day. Sixteen participants completed the program with an average increase in daily step count of 988 +/- 1048 steps (p = 0.002). The Omron is accurate in persons with COPD with usual walking speeds > 0.94 m/s. Accuracy is more variable at lower speeds, but the Omron captures more than 80% of manual step counts in most persons.In this preliminary study, an Internet-mediated walking program using the Omron significantly increased step counts in COPD.
authors.affiliation: Rehabilitation Research and Development Service, Veterans Health Administration, Department of Veteran Affairs (VA), Washington, DC, USA. marilyn.moy@va.gov
authors.forename: Marilyn L
authors.initials: ML
authors.lastname: Moy
authors.forename: Adrienne W
authors.initials: AW
authors.lastname: Janney
authors.forename: Huong Q
authors.initials: HQ
authors.lastname: Nguyen
authors.forename: Kirby R
authors.initials: KR
authors.lastname: Matthess
authors.forename: Miriam
authors.initials: M
authors.lastname: Cohen
authors.forename: Eric
authors.initials: E
authors.lastname: Garshick
authors.forename: Caroline R
authors.initials: CR
authors.lastname: Richardson
mesh_terms: D000368:Aged; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D020407:Internet; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods; D029424:Pulmonary Disease, Chronic Obstructive / Q000628:therapy*; D016138:Walking
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