ArticlePhysical Activity and Multiple Sclerosis: Validity of Self-Report and Objective MeasuresGosney, Jessica L. MA; Scott, Jennifer A. BS; Snook, Erin M. MS; Motl, Robert W. PhDAuthor Information Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign. Corresponding author: Robert W. Motl, PhD, Department of Kinesiology and Community Health, University of Illinois, 350 Freer Hall, Urbana, IL 61801 (e-mail: email@example.com). This investigation was conducted while the authors were supported by a Pilot Research Award from the National Multiple Sclerosis Society. Family & Community Health: April-June 2007 - Volume 30 - Issue 2 - p 144-150 doi: 10.1097/01.FCH.0000264411.20766.0c Buy Metrics 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. © 2007 Lippincott Williams & Wilkins, Inc.