Effects of aerobic exercise on serum leptin levels in obese women |
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Authors: | R R Kraemer G R Kraemer E O Acevedo E P Hebert E Temple M Bates A Etie R Haltom S Quinn and V D Castracane |
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Institution: | Department of Kinesiology and Health Studies, Southeastern Louisiana University, Hammond 70402, USA. |
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Abstract: | It has been demonstrated that leptin concentrations in obese patients may be altered by weight loss. We examined the effects of a 9-week aerobic exercise program on serum leptin concentrations in overweight women (20-50% above ideal body mass) under conditions of weight stability. Sixteen overweight women, mean (SE) age 42.75 (1.64) years, comprised the exercise group which adhered to a supervised aerobic exercise program. A graded exercise treadmill test was conducted before and after the exercise program to determine maximal oxygen uptake (VO2max) using open-circuit spirometry. The women demonstrated improved aerobic fitness (VO2max increased 12.29%), however, body fat and the body mass index did not change significantly 42.27 (1.35)-41.87 (1.33)%]. Fourteen women, age 40.57 (2.80) years, did not exercise over the same time period and served as a control group. Serum leptin levels were not significantly altered for either the exercise 28.00 (2.13)-31.04 (2.71) ng x ml(-1)] or the control group 33.24 (3.78)-34.69 (3.14) ng x mg(-1)]. The data indicate that 9 weeks of aerobic exercise improves aerobic fitness, but does not affect leptin concentrations in overweight women. |
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Keywords: | Obesity Leptin Body fat Exercise |
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