No sustained effect of aerobic or resistance training on insulin sensitivity in nonobese, healthy older women |
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Authors: | Goulet Eric D B Mélançon Michel O Dionne Isabelle J Aubertin-Leheudre Mylène Aubertin Leheudre Mylène |
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Affiliation: | Research Centre on Aging, Geriatric Institute of the University of Sherbrooke, Québec, Canada J1H 4C4. |
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Abstract: | It is unclear whether long-term aerobic (AT) or resistance (RT) training can improve insulin sensitivity (IS) beyond the residual effect of the last training bout in older women (54-78 years). Therefore, a group of nonobese, healthy older women underwent 6 months of AT (n = 8) or RT (n = 10), and the authors measured IS 4 days after the last training bouts using the hyperinsulinemic-euglycemic clamp technique. Women trained 3 days/week. AT consisted of 25- to 60-min sessions of walking/jogging at 60-95% of maximal heart rate. RT consisted of three sets of nine exercises repeated 10 times at 80% of 1 repetition maximum. AT decreased fat mass, whereas both AT and RT increased fat-free mass. Neither training program, however, improved absolute or relative rates of glucose disposal. The authors therefore concluded that nonobese, healthy older women should perform AT or RT on a daily basis in order to improve IS and maintain the improvement. |
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