the effect of duration and type of rest interval between sets with low and moderate intensities on the volume of bench press in untrained men

according to the few studies in active rest interval between the resistance exercises sets, it can’t be explicitly commented about the effect of it on performance in consecutive sets. purpose: the purpose of the current study was to compare different active and passive rest interval durations (3 and 4 minutes) on the numbers of repetition of bench press with 50 and 75 percent of 1rm in untrained men during a workout. 15 college-aged men (age: 21.7±2.17 years, height: 174±5.98 cm, weight: 71.36±36 kg, body mass index: 23.44±3.19 kg/m2 ) were studied during nine weeks. during each testing session, the bench press was performed with a 3 or 4- minute rest interval between sets. the exercises volume was defined as the total number of repetitions completed over 3- sets in each session; and active rest was included dynamic stretching exercises. results: in two intensities of 50 and 75% 1rm and in two times of 3 and 4 minutes, active rest between bench press sets in comparison with passive rest increased significantly exercise volume (p0/05). also, no significant difference was observed in active rest between 3 and 4 minutes, but there was a significant difference in passive rest (p0/05). conclusion: the findings of the current study indicate that using active rest and dynamic stretching exercises between bench press sets in comparison with passive rest will increase more repetitions in an exercise session