HORMONAL AND PHYSIOLOGICAL ADAPTATIONS TO HIGH-INTENSITY INTERVAL TRAINING IN PROFESSIONAL MALE CANOE POLO ATHLETES

摘要

Sheykhlouvand, M, Khalili, E, Agha- Alinejad, H, and Gharaat, M. Hormonal and physiological adaptations to high- intensity interval training in professional male canoe polo athletes. J Strength Cond Res 30( 3): 859- 866, 2016- This study compared the effects of 2 different high- intensity interval training ( HIIT) programs in professional male canoe polo athletes. Responses of peak oxygen uptake ( V-O2peak), ventilatory threshold ( VT), peak and mean anaerobic power output ( PPO and MPO), blood volume, and hormonal adaptations to HIIT were examined. Male athletes ( n = 21, age: 24 +/- 3 years; height: 181 +/- 4 cm; mass: 85 6 6 kg; and body fat: 12.9 +/- 2.7%) were randomly assigned to one of 3 groups ( N = 7): ( a) ( G1) interval paddling with variable volume ( 6, 7, 8, 9, 9, 9, 8, 7, 6 repetitions per session from first to ninth session, respectively) 3 60 second at lowest velocity that elicited V-O2peak ( vV(O2peak)), 1: 3 work to recovery ratio; ( b) ( G2) interval paddling with variable intensity ( 6 3 60 second at 100, 110, 120, 130, 130, 130, 120, 110, 100% vV(O2peak) from first to ninth session, respectively, 1: 3 work to recovery); and ( c) ( GCON) the control group performed three 60 minutes paddling sessions ( 75% vV(O2peak)) per week for 3 weeks. High- intensity interval training resulted in significant ( except as shown) increases compared with pretest, in V-O2peak ( G(1) = + 8.8% and G(2) = + 8.5%), heart rate at VT ( b min(-1)) ( G(1) = + 9.7% and G(2) = + 5.9%) and (% maximum) ( G1 = + 6.9%; p = 0.29 and G2 = + 6.5%), PPO ( G1 = + 9.7% and G2 = + 12.2%), MPO ( G1 = + 11.1%; p = 0.29 and G2 = + 16.2%), total testosterone ( G1 = + 29.4% and G2 = + 16.7%), total testosterone/ cortisol ratio ( G1 = + 40.9% and G2 = + 28.1%), and mean corpuscular hemoglobin ( G1 = + 1.7% and G2 = + 1.3%). No significant changes were found in GCON. High- intensity interval paddling may improve both aerobic and anaerobic performances in professional male canoe polo athletes under the conditions of this study.