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acute hormonal responses in trained women, J Sci Med Sport (2007), doi: resistance training on acute hormonal responses in trained women young women. Twelve healthy trained females (26.83 subjects were assigned in a random order a rest interval of 30 s (P30), 60 s (P60) or 120 s (P120) between sets. The resistance exercise session consisted of four lower body exercises with three sets performed until contractile failure using 10-repetition maximum (RM) load. Blood samples were drawn for determination of serum growth hormone (GH) and cortisol concentrations before exercise (T0), immediately after each training session (T1), and after 5 min (T5), 15 min (T15), and 30 min (T30) of recovery. Statistical evaluation of the area under the time--concentration relation- ship for GH (GHauc) and for cortisol (Cauc) were analyzed using a one-way ANOVA There were no differences among protocols (P30, P60 and P120) in the serum GH and cortisol concentrations at baseline (T0). However, as compared to T0, all proto- cols led to acute increases (p < 0.05) in serum GH concentrations after each training session. The GHauc was greater for P30 than for both P60 and P120, however, there were no differences between P60 and P120. The Cauc were not different among protocols. Thus, the magnitude of acute GH responses in previously strength-trained women appears greater with a 30-s rest interval between sets compared to longer rest periods of 60- or 120-s. © 2007 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved. E-mail address: doi: |
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