Oral / Poster Presentation File
1Department of Exercise Physiology, Sari Branch, Islamic Azad University, sari, Iran
2Department of Exercise Physiology, Humanity faculty, Sari Azad Islamic University
Methods: 26 active girls (with 1 to 3 times training per week) were participated in this study voluntarily. were selected and randomly divided into three groups: non-periodization, linear periodization and undulating periodization. Training program was conducted for 8 weeks and 3 days per week. Traditional strength training (TST) performed with 75% 1RM and strength training with blood flow restriction (BFR) performed with 30% 1RM (with wrapping a rubber tourniquet around the proximal leg). The non-periodization group performed TST with constant intensity during 8 weeks. In linear periodization, subjects performed BFR during the first 4 weeks and TST during the second 4 weeks. In undulating periodization, participants switch from BFR to TST every session. Before and after training program, testosterone, IGF-1 and strength were taken.
Results: There was significant increase for testosterone (P=0.035), IGF-1 (P=0.001) and strength (P=0.001) in all groups from pre to post test, but there was no significant difference between groups.
Conclusion: Combination of traditional strength training and resistant training with blood flow restriction based linear or undulating periodization has similar effect with non-periodization strength training on testosterone, IGF-1, hypertrophy and strength in active girls. Furthermore, it can be suggested that BFRT could be used on days where a recovery from high intensity TST or perhaps a psychological break from TST is needed.
