Document Type : Research Paper
islamic azad university of rasht
The aim of this study was to investigate the effect of a change in the sequence of concurrent endurance and strength training on aerobic power and body composition of active men. 30 men (mean age 25.8 ± 3.50 years) with endurance and strength training history were divided into these groups: endurance training before strength training (ES, n=10), strength training before endurance training (SE, n=10) and no training (control) (C, n=10). Subjects trained for 5 weeks. Strength training protocol was divided into 3 days a week (3 sets, 70-85% 1RM). The endurance training protocol included 3-5 times intermittent running with minimum speed through which the subject reached maximal oxygen consumption (vVO2max). The duration of each running was equal to 50% of time to exhaustion (Tlim) in vVO2max speed. VO2max, Tlim and BF% were measured before and after the training and the results were compared. VO2max and Tlim significantly increased in both training groups (P<0.05) but the difference of increased VO2max was not significant between the two groups (P>0.05). BF% decrease was significant in both groups. Also, there was a significant difference in decreased BF% between the two groups (P<0.05). The results suggested that ES training program induced more decrease in BF% whereas both ES and SE training programs produced similar improvements in VO2max.