Aim: Determining the volume of exercise is key point of designing resistance training workout. The objective of this study was to compare the manipulation effects of resistance exercise volume on muscular strength of the upper and lower-body parts and effect of first movement in exercise prescription in the untrained men.

Material and Methods: 18 untrained men from 20 to 24 age-ranges voluntarily participated in this research. The subjects were homogenized after strength measuring (IRM) in two movements (chest press and leg press) using Kolmogorov-Smirnov test in two, fixed two-set groups (n=9) and sets with varied Sequence and volume (n=9).also the weight and environments of Thigh was measured. The subjects performed a common exercise program for four weeks and after four weeks, strength test (IRM) was conducted again. Two-set group continued the same program with new records for six other weeks, but changeable sets group applied changeable sets in each movement on the muscles in each exercise session. Dependent t-test and independent t-test were used to analyze data respectively fro comparing intragroup and intergroup changes at p<0.05 level.

Results: The strength of a maximum repetition increased significantly after four weeks and after six weeks in all upper and lower-body movements in both groups (p&le0.05). Percentage of increase in maximum strength on upper and lower-body in changeable sets group was higher than two-set group’s. also the weight in the end of fourth week and surrounding of Thigh in the end of 10th week significantly increased (p&le0.05).



Conclusion: It seems, after initial compatibility, upper and lower-body parts produce a similar response to specified exercise volume also after primary adaptation, exercises with high volume (3 sets) in comparison with low volume (2 set) had more adaptation

prescription should not be fixed.