The Survey of Electrocardiogram Alterations and Vo2max of Active Male after Consume Caffeine with Custodiagnostic

Caffeine is isolated Methyl-xanthine, Alkaloid stimulants and it is the most commonly used drug in the world. The purpose of this study is to investigate the effect of caffeine on VO2max and Electrocardiograph in active male of college’s student after Bruce exhaustive exercise. Methods and Number 9 male active those were 25 (mean 20.9±1.37 years, fat percent 11.21±3.79 percentage and BMI 23.49±1.69 kg/m2) allocated into two equal condition: the supplement (5 mg.kg-1 caffeine) and without caffeine condition. After 60 min supplementation, subjects were participated in a single session of exhaustive Bruce Test. Changes in the VO2max and QT interval distance meatured. The results showed that caffeine had significant effect on the increased levels of VO2max after Bruce exhaustive exercise compared to the control condition. Also, levels of QT interval increased significantly after the exercise (P<0/05). caffeine could significantly increase the VO2max and increase QT after Bruce exhaustive test. Maybe, level and severity of exercise could increase the ventricular depolarization and repolarization and cardiac performance