Effects of Acute Supplementation of a Carbohydrate Drink Contain Turine and Caffeine on the Endurance Performance and Blood Glucose in Student Athletes

In this study, we examined the effects of acute ingestion of a carbohydrate drink contain turine and caffeine or a placebo (P) on physiological responses, glucose levels and performance during runing exercise. ten healthy and trained male young athletes students (age: 23/80 ±1/22 years) exercised on a treadmill at 81/8% heart rate max, until exhaustion in a room maintained at temprature 23.9±0.2 oC and 64.2±1.6% relative humidity on two occasions,1-week apart. subjects received 6ml.kg- 1 body weight of D or P,30 minutes before starting of exercise bout, and they received 2ml.kg-1 body weight of D or P every 15 minutes During each exercise bout in a double-blind randomised study design. results showed no significant difference between D and P trials in the total work time to exhaustion (52/0±7/9and51/9±11/3min respectively)(p>0/05). Changes in heart rate, and RPE were similar with both type of drinks)(p>0/05). plasma glucose concentrations was significantly higher in drink group compared placebo)(p<0/05). Thus, it can be concluded that the ingredient in the drink did not provide added advantage to runing endurance performance.