Article

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.

Langue : ANGLAIS