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Exercise, Fat and Metabolism
Effect of Low-Intensity Exercise Training on Fat Metabolism of Obese Women
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Exercise, Fat & Metabolism - Study

The Effect of Low-Intensity Exercise Training on Fat Metabolism of Obese Women

Fat Metabolism Study - Aim
Previous studies have shown that fat metabolism is different in upper body (UB) and lower body (LB) obese women. The present study investigated whether the effect of low-intensity exercise training on fat metabolism is different in UB and LB obese premenopausal women.

Fat Metabolism Study - Methods
Twenty-one healthy, premenopausal women with either LB obesity (waist-to-hip ratio of 0.79; n = 8) or UB obesity (waist-to-hip ratio of 0.85; n = 13) participated in the present study. The UB obese women were matched and randomly divided in an exercise training group (UB) and a nonexercising control group (UB-C). Subjects in the UB and LB groups participated in a low-intensity exercise training program (40 percent VO2max) three times per week for 12 weeks. Before and after the intervention, measurements of fat metabolism at rest and during exercise, body composition, and maximal aerobic capacity were performed.

Fat Metabolism Study - Results
Exercise training did not change the respiratory exchange ratio at rest in the UB and LB groups. During exercise, relative fat oxidation increased in the UB group by 19 percent (p < 0.05), whereas no change in the LB and UB-C groups was found. Plasma free fatty acid oxidation did not change by exercise training, and nonplasma fatty acid oxidation tended to increase in the UB group compared with the UB-C group (p = 0.08).

Fat Metabolism Study - Issues
Low-intensity exercise training increased the contribution of fat oxidation to total energy expenditure during exercise but not at rest in UB obese women. Exercise training had no significant effect on fat metabolism in the LB obese women.

Source: Maastricht University. 2003

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Weight Loss News
Theories about how to lose weight, how to reduce obesity and general weight management are constantly changing along with ideas about which weight loss diet program is best and so forth. At present, however, a balanced diet combined with regular exercise remains the favorite weight loss strategy of most dietitians and weight loss experts.

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