Bruce W Bailey1, Larry A Tucker, Travis R Peterson, James D LeCheminant. 1. Department of Exercise and Health Sciences, College of Nursing and Health Sciences, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125-3393, USA. bruce.bailey@umb.edu
Abstract
PURPOSE: To determine the extent to which objectively measured intensity of physical activity (PA) predicts change in body fat (BF%) in women. DESIGN: Prospective cohort study of PA intensity and body composition in middle-aged women. SETTING: The study took place in a metropolitan Mountain West community. SUBJECTS: Two hundred and twenty-eight women participated in two assessment periods separated by 20 months. MEASURES: Each assessment period consisted of seven consecutive days of monitoring, followed by body composition testing. ANALYSIS: The general linear model using partial correlations and Mantel-Haenszel chi2 tests were performed. RESULTS: At baseline and follow-up, women who participated in vigorous PA were leaner than women who participated in moderate or light PA (p < .05). Longitudinal results indicated that a greater proportion of women who decreased PA intensity over the 20 months also increased BF% (66%), compared to participants who increased or maintained PA intensity (47%) (p < .05). CONCLUSIONS: PA intensity seems to play a role in long-term weight maintenance. Reducing PA intensity increases the risk of BF% gain in women. Efforts to help women maintain PA intensity along with other weight management strategies may prove beneficial in preventing unwanted body fat gain in middle-aged women.
PURPOSE: To determine the extent to which objectively measured intensity of physical activity (PA) predicts change in body fat (BF%) in women. DESIGN: Prospective cohort study of PA intensity and body composition in middle-aged women. SETTING: The study took place in a metropolitan Mountain West community. SUBJECTS: Two hundred and twenty-eight women participated in two assessment periods separated by 20 months. MEASURES: Each assessment period consisted of seven consecutive days of monitoring, followed by body composition testing. ANALYSIS: The general linear model using partial correlations and Mantel-Haenszel chi2 tests were performed. RESULTS: At baseline and follow-up, women who participated in vigorous PA were leaner than women who participated in moderate or light PA (p < .05). Longitudinal results indicated that a greater proportion of women who decreased PA intensity over the 20 months also increased BF% (66%), compared to participants who increased or maintained PA intensity (47%) (p < .05). CONCLUSIONS: PA intensity seems to play a role in long-term weight maintenance. Reducing PA intensity increases the risk of BF% gain in women. Efforts to help women maintain PA intensity along with other weight management strategies may prove beneficial in preventing unwanted body fat gain in middle-aged women.
Authors: Amy Luke; Lara R Dugas; Kara Ebersole; Ramon A Durazo-Arvizu; Guichan Cao; Dale A Schoeller; Adebowale Adeyemo; William R Brieger; Richard S Cooper Journal: Am J Clin Nutr Date: 2008-12-03 Impact factor: 7.045
Authors: Bruce W Bailey; Ciera L Bartholomew; Caleb Summerhays; Landon Deru; Sharla Compton; Larry A Tucker; James D LeCheminant; Joseph Hicks Journal: J Obes Date: 2019-12-01