پاسخ های هورمونی زنان میانسال تمرین کرده به یک جلسه تمرین مقاومتی و محدودیت جریان خونی (مقاله لاتین)

Eonho Kim¹, Lee D. Gregg², Daeyeol Kim¹, Vanessa D. Sherk², Michael G. Bemben¹ and Debra A. Bemben²

The purpose of this study was to determine whether the acute hormone response to exercise differed between low intensity blood flow restricted resistance exercise and traditional high-intensity resistance exercise in college-aged women. A total of 13 healthy women (aged 18-25 yrs), who were taking oral contraceptives, volunteered for this randomized crossover study. Subjects performed a session of low intensity blood flow restricted resistance exercise (BFR) (20% of 1-RM, 1 set 30 reps, 2 sets 15 reps) and a session of traditional high intensity resistance exercise without blood flow restriction (HI) (3 sets of 10 repetitions at 80% of 1-RM) on separate days. Fasting serum cortisol and growth hormone (GH) and blood lactate responses were measured in the morning pre and post exercise sessions. GH (Change: HI: 6.34 ± ۱٫۷۲; BFR: 4.22 ± ۱٫۴۰ ng·mL^-1) and cortisol (Change: HI: 4.46 ± ۱٫۵۳; BFR: 8.10 ± ۲٫۳۰ ug·dL^-1) significantly (p < 0.05) increased immediately post exercise for both protocols compared to baseline and there were no significant differences between the protocols for these responses. In contrast, blood lactate levels (HI: 7.35 ± ۰٫۴۵; BFR: 4.02 ± ۰٫۳۳ mmol·L^-1) and ratings of perceived exertion were significantly (p < 0.01) higher for the HI protocol. In conclusion, acute BFR restricted resistance exercise stimulated similar increases in anabolic and catabolic hormone responses in young women.

Key words: Growth Hormone, Cortisol, blood flow restriction