title: Physical activity and multiple sclerosis: validity of self-report and objective measures.
abstract: This study examined the validity of scores from measures of physical activity among individuals with multiple sclerosis. Participants (N = 196) completed 2 self-report measures of physical activity, and wore a pedometer and an accelerometer for a 7-day period. There was a large correlation between scores from the objective devices (r = 0.82) and a moderate correlation between scores from the self-report surveys (r = 0.37). The correlations across measurement methods were moderate-to-large in magnitude (range of r = 0.32-0.53). Our results provide a stronger and more compelling basis for the validity of scores from measures of physical activity among individuals with multiple sclerosis.
authors.affiliation: Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
authors.forename: Jessica L
authors.initials: JL
authors.lastname: Gosney
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Scott
authors.forename: Erin M
authors.initials: EM
authors.lastname: Snook
authors.forename: Robert W
authors.initials: RW
authors.lastname: Motl
mesh_terms: D000054:Acceleration; D000328:Adult; D005260:Female; D015438:Health Behavior; D006801:Humans; D007087:Illinois; D007196:Indiana; D008297:Male; D011939:Mental Recall; D008875:Middle Aged; D018670:Monitoring, Ambulatory; D009043:Motor Activity / Q000502:physiology*; D009103:Multiple Sclerosis / Q000503:physiopathology* / Q000523:psychology; D011594:Psychometrics / Q000295:instrumentation*; D012647:Self-Assessment; D011795:Surveys and Questionnaires; D016138:Walking / Q000502:physiology*