title: Reliability of scores from physical activity monitors in adults with multiple sclerosis.
abstract: We examined the reliability of scores from physical activity monitors in a sample of 193 individuals with multiple sclerosis (MS) who wore a pedometer and an accelerometer for a 7-day period. There were no significant differences among days for the pedometer (p = .12) or the accelerometer (p = .15) indicating that week and weekend days can be analyzed in a single intra-class correlation (ICC) analytic model. The 7 days of monitoring yielded ICC estimates of .93 for both the pedometer and accelerometer, and a minimum of 3 days yielded a reliability of .80 for both the pedometer and accelerometer. Results indicated that physical activity monitor scores are reliable measures of physical activity for individuals with MS.
authors.affiliation: Department of Kinesiology and Community Health at the University of Illinois, Urbana-Champaign, IL, USA. robmotl@uiuc.edu
authors.forename: Robert W
authors.initials: RW
authors.lastname: Motl
authors.forename: Weimo
authors.initials: W
authors.lastname: Zhu
authors.forename: Youongsik
authors.initials: Y
authors.lastname: Park
authors.forename: Edward
authors.initials: E
authors.lastname: McAuley
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Scott
authors.forename: Erin M
authors.initials: EM
authors.lastname: Snook
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation; D009043:Motor Activity; D009103:Multiple Sclerosis / Q000503:physiopathology*; D015203:Reproducibility of Results