No sustained effect of aerobic or resistance training on insulin sensitivity in nonobese, healthy older women.
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.
Goulet
Eric D B
ED
Research Centre on Aging, Geriatric Institute of the University of Sherbrooke, Québec, Canada J1H 4C4.
Mélançon
Michel O
MO
Dionne
Isabelle J
IJ
Aubertin-Leheudre
Mylène
M
Aubertin Leheudre
Mylène
M
D000222:Adaptation, Physiological; D000368:Aged; D000704:Analysis of Variance; D001786:Blood Glucose / Q000032:analysis*; D001823:Body Composition / Q000502:physiology; D005260:Female; D015309:Glucose Clamp Technique; D005951:Glucose Tolerance Test; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D007333:Insulin Resistance / Q000502:physiology; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology; D010806:Physical Education and Training; D010807:Physical Endurance / Q000502:physiology; D010809:Physical Fitness / Q000502:physiology
D001786:Blood Glucose