Two different strength training methods comparison, influence on morphological characteristics, repetitive and absolute strength

Strength exercise has positive influence on morphological characteristic through muscle mass increase and decrease of body fat mass.Objective of this research is to establish how same exercise with different methods of strength training affects morphological characteristic and strength. Thirteen healthy mail students (aged 21±2 years) were randomly divided into two groups. Both groups trained three times per week, for eight weeks. Exercise was same in both groups, but the number of repetitions and load was different. In first group (n=7) three sets were done, 15 repetitions (60%, 1RM). In second group (n=6) three setswere done also, but 8 repetitions (75-80%, 1RM). Morphological characteristic were analyzed with BIA method, before training, and after eight weeks of training. Repetitive strength was assessed with: Sit Ups Test/min (SUT), and Press up Test/min (PUT). Absolute strength (1RM) was assessed with: Bench Press Test (BPT), Squat Test (ST) and Chin Up Test (CUT). To determine the differences in variables within groups paired t-test was used, and to determine differences between groups the odd t-test was used. Statistical significance was determined at level p = 0.05. Results showed that exercise reduced (BMI, MBF, PBF, WHR, WEIGHT) significantly in second group (n=6), and there were no significant changes in first group (n=7). There are no significant differences between the groups. Results of strength tests showed significant increasement in first group only for variables absolute strength (BPT, ST, CUT).In second group results significantly increased for both, absolute and repetitive strength (SUT, PUT, BPT, ST, CUT). There are no differences between the groups. Strength training with much load and less repetitions lead to significant changes in morphological characteristics and increase repetitive and absolute strength. Strength training with less load and more repetitions lead only to changes in absolute strength.