Significant Changes in VLDL-Triacylglycerol and Glucose Tolerance in Obese Subjects Following Ten Days of Training

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Human Performance and Recreation


We characterized the effect of ten days of training on lipid metabolism in 6 [age 37.2 (2.3) years] sedentary, obese [BMT 34.4 (3.0) kg . m(-2)] males with normal glucose tolerance. An oral glucose tolerance test was performed prior to and at the end of the 10 d of training period. The duration of each daily exercise session was 40 min at an intensity equivalent to similar to 75% of the age predicted maximum heart rate. Blood measurements were performed after an overnight fast, before and at the end of the 10 d period. Plasma triacylglycerol was significantly (p < 0.05) following exercise training (2.15 +/- 0.29 vs. 1.55 +/- 0.28 mmol . l(-1)). Very low density lipoprotein-triacylglycerol was also significantly (p < 0.05) reduced (1.82 +/- 0.3 vs. 1.29 +/- 0.29 mmol . l(-1)). No significant changes in high density lipoprotein-cholesterol were observed as a result of training. Following training fasting plasma glucose and fasting plasma insulin were significantly reduced [Glucose: 5.9 (0.2) mmol . l(-1) vs. 5.3 (0.22) mmol . l(-1) (p < 0.05): Insulin 264.3 (53.8) rho . mol . l(-1) vs. 200.9 (30.1) rho mol . l(-1), p = 0.05]. The total area under the glucose curve during the OGTT decreased significantly (p < 0.05). These preliminary data suggest that short-term exercise, without concomitant loss of body mass, induces favorable changes in plasma triacylglycerol, and very low density lipoprotein-triacylglycerol and glucose tolerance but has no effect on high density lipoproteincholesterol.

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European Journal of Applied Physiology





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