a short-term physical activity randomized trial in the lower mississippi delta一个短期的体育活动更低的密西西比三角洲的随机试验.pdfVIP

A Short-Term Physical Activity Randomized Trial in the Lower Mississippi Delta Peter T. Katzmarzyk*, Catherine M. Champagne, Catrine Tudor-Locke, Stephanie T. Broyles, David Harsha, Betty M. Kennedy, William D. Johnson Population Science, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States of America Abstract Background: The purpose of this study was to determine if a short-term pedometer-based intervention results in immediate increases in time spent in moderate-to-vigorous physical activity (MVPA) compared to a minimal educational intervention. Methods: A sample of 43 overweight adults 35 to 64 years of age participated in a one week pedometer-based feasibility trial monitored by accelerometry. Participants were randomized into a one-week education-only group or a group that also wore a pedometer. Accelerometer-measured MVPA was measured over 7 days at baseline and again for 7 days immediately post-intervention. Results: Minutes of MVPA increased significantly in the overall sample (p = 0.02); however, the effect of adding the pedometer to the education program was not significant (p = 0.89). Mean (6SE) MVPA increased from 12.762.4 min/day to 16.263.6 min/day in the education-only group and from 13.263.3 min/day to 16.363.9 min/day in the education+pedometer group. The correlation between change in steps/day and change in MVPA was 0.69 (p,0.0001). Conclusions: The results of this study suggest that the addition of a pedometer to a short-term education program does not produce added benefits with respect to increasing physical activity in the Lower Mississippi Delta. Trial Registration: ClinicalT NC Citation: Katzmarzyk PT, Champagne CM, Tudor-Locke C, Broyles ST, Harsha D, et al. (2011) A Short-Term Physical Activity Randomized Trial in