Comparison of affection of resistant training with blood flow restriction and traditional method on hormonal responses among young male body builders

Abstract

 lot of studies and findings confirm that testosterone and growth hormonal responses will change during resistance training. But which kind of training can have most hormonal responses and muscle growth for athletes? The aim of the study is Comparison of affection of resistant training with blood flow restriction and traditional method on hormonal responses among young male body builders. For this reason, 20 male young bodybuilders were selected as volunteers to participate in the exercise and divided in two groups of 10 people randomly; resistance training with blood flow restriction group (BFR), with age mean 23.30±2.98 years, height 172±9.80 Cm, weight 74.40±17.70 Kg and BMI 24.93±3.86; and Traditional method group (T), with age mean 24.70±3.50 years, height 174±6.57 Cm, weight 82.30±10.14 Kg and BMI 27.19±2.31. Both groups of subjects conducted in blood sampling at immediately before starting the exercise period and a quarter after that. The BFR performed training with 25% of 1-RM, in category 7 movements on upper extremities and 5 movements on lower extremities, each movements 3 sets of 20 to 30 repetition with one min for break time between them; and the T performed the same movements with 80% of 1-RM and each movement 4 sets of 6 to 8 repetition. For analysis the data were used the descriptive statistics, One-Sample Kolmogorov-Smirnov test, pair sample t-test and independent sample t-test. Results showed that a session of BFR and T trainings, both can increase significantly, growth hormone density with t=-2.98, P=0.01 and t=-3.04, P=0.01; and for testosterone hormone density with t=-5.54, P=0.000 and t=-3.96, P=0.005, respectively. Also, no difference was found between affection of these training method on testosterone and growth hormonal densities, significantly. In conclusion, each of BFR or T training methods, without difference between them, can increase testosterone and growth hormonal densities, significantly, among male young bodybuilders. 

KEY WORDS: , , , .