Minority Health Archive

Effects of Exercise on Total and Intra-abdominal Body Fat in Postmenopausal Women

Irwin, Melinda L. and Yasui, Yutaka and Ulrich, Cornelia M. and Bowen, Deborah and Rudolph, Rebecca E. and Schwartz, Robert S. and Yukawa, Michi and Aiello, Erin and Potter, John D. and McTiernan, Anne (2003) Effects of Exercise on Total and Intra-abdominal Body Fat in Postmenopausal Women. Journal of the American Medical Association, 289 (3). pp. 323-330.

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Abstract

Context The increasing prevalence of obesity is a major public health concern. Physical activity may promote weight and body fat loss. Objective To examine the effects of exercise on total and intra-abdominal body fat overall and by level of exercise. Design Randomized controlled trial conducted from 1997 to 2001. Setting and Participants A total of 173 sedentary, overweight (body mass index 24.0 and >33% body fat), postmenopausal women aged 50 to 75 years who were living in the Seattle, Wash, area. Intervention Participants were randomly assigned to an intervention consisting of exercise facility and home-based moderate-intensity exercise (n = 87) or a stretching control group (n = 86). Main Outcome Measure Changes in body weight and waist and hip circumferences at 3 and 12 months; total body, intra-abdominal, and subcutaneous abdominal fat at 12 months. Results Twelve-month data were available for 168 women. Women in the exercise group participated in moderate-intensity sports/recreational activity for a mean (SD) of 3.5 (1.2) d/wk for 176 (91) min/wk. Walking was the most frequently reported activity. Exercisers showed statistically significant differences from controls in baseline to 12-month changes in body weight (–1.4 kg; 95% confidence interval [CI], –2.5 to –0.3 kg), total body fat (–1.0%; 95% CI, –1.6% to –0.4%), intra-abdominal fat (–8.6 g/cm2; 95% CI, –17.8 to 0.9 g/cm2), and subcutaneous abdominal fat (–28.8 g/cm2; 95% CI, –47.5 to –10.0 g/cm2). A significant dose response for greater body fat loss was observed with increasing duration of exercise. Conclusions Regular exercise such as brisk walking results in reduced body weight and body fat among overweight and obese postmenopausal women.


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Item Type: Article
Additional Information: Access to full text is subject to the publisher's access restrictions.
Uncontrolled Keywords: obesity, Physical activity, weight and body fat loss, intra-abdominal body fat, postmenopausal women, Regular exercise
Subjects: Health > Public Health
Health > Public Health > Chronic Illness & Diseases > Obesity
Research > studies
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Depositing User: Users 141 not found.
Date Deposited: 02 Apr 2011
Last Modified: 30 Jun 2011 12:16
Link to this item (URI): http://health-equity.pitt.edu/id/eprint/694

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