Effect of prior exercise on glucose metabolism in trained men

Abstract

Several studies have demonstrated that oral glucose tolerance is impaired in the immediate postexercise period. A double-tracer technique was used to examine glucose kinetics during a 2-h oral glucose (75 g) tolerance test (OGTT) 30 min after exercise (Ex, 55 min at 71±2% of peak O2 uptake) and 24 h after exercise (Rest) in endurance-trained men. The area under the plasma glucose curve was 71% greater in Ex than in Rest (P=0.01). The higher glucose response occurred even though whole body rate of glucose disappearance was 24% higher after exercise (P=0.04, main effect). Whole body rate of glucose appearance was 25% higher after exercise (P=0.03, main effect). There were no differences in tot..