the effect of caffeine and ephedrine supplement and their combination on maximal stregnth and muscular endurance in male bodybuilders

the purpose of present study was to examine the effects of caffeine and ephedrine supplement and their combination on maximal strength and mucular endurance in male bodybuilders. 12 male bodybuilders (mean age: 24.41±4.42 years, height: 174.83±3.61 cm and weight: 75.67±8.05 kg) were selected voluntarily. the study design was crossover, in which the subjects were placed in 7 different conditions of control (con), ephedrine ((e), 0.8 mg/kg); caffeine ((c), 6 mg/kg), a combination of e + c (0.8 mg/kg + 6mg/kg), placebo 1, placebo 2 and placebo 3 (sarch powder as capsul) with a period of one week between each conditions. in each session, subjects performed a one repetition maximum (1rm) test for maximum strength and a 70 % repetition untill exhaustion test for muscular endurance in bench press and leg press. the data was analyzed using the kolmogrov – smirnov, repeated measrues anova and tukey post – hoc tests, at significance level of p