Hormonal Responses to Consecutive Carbohydrate Ingestions during Heavy-Resistance Exercise

The purpose of this study was tostudy investigates plasma hormonal responses to consecutivecarbohydrate supplementations during heavy-resistance exercise.Ten male students randomly received either exercise treatment (8RM) or exercise/carbohydrate (8 RM/CHO). The 8 RM/CHO groupingested carbohydrate (1.2 g·kg-1) between resistance exercisesessions. Each session consisted of 5 sets of leg press exercise witha maximum of 8 reps (8 RM), and there were four sessions duringthe 2-hr experimental period. Blood samples were drawnimmediately before exercise (0) and in 15-min intervals during the 2-hr period. Plasma total testosterone, cortisol, human growthhormone (hGH), insulin, and glucose concentrations weredetermined. The plasma glucose level was significantly higher in 8RM/CHO at 15, 30, 45, 60, and 90 min versus 8 RM (P