Division of Biokinesiology and Physical Therapy, Clinical Exercise Research Center, University of Southern California, Los Angeles, California, USA.
J Strength Cond Res. 2012 Oct;26(10):2755-64. doi: 10.1519/JSC.0b013e3182651fbe.
We hypothesized that total body strength (S) and hypertrophic (H) resistance training (RT) protocols using relatively short rest interval (RI) lengths between sets will elicit significant acute increases in total testosterone (TT) and cortisol (C) in healthy young men. Six men, 26 (±2.4) years, completed 4 randomized RT sessions, after a control session (R). The S and H protocols were equated for volume load (sets × repetitions × load); S: 8 sets × 3 repetitions at 85% 1RM, H: 3 sets × 10 repetitions at 70% 1RM, for all exercises. The RI used 60 seconds (S60, H60) and 90 seconds (S90, H90). Blood was drawn preexercise (PRE), immediately postexercise (POST), 15 minutes postexercise (15 MIN), and 30 minutes postexercise (30 MIN). The H60 elicited significant increases in TT from PRE (7.32 ± 1.85 ng·ml) to POST (8.87 ± 1.83 ng·ml(-1)) (p < 0.01), 15 MIN (8.58 ± 2.15 ng·ml(-1)) (p < 0.01), and 30 MIN (8.28 ± 2.16 ng·ml(-1)) (p < 0.05). The H90 also elicited significant increases in TT from PRE (8.37 ± 1.93 ng·ml(-1)) to POST (9.90 ± 1.25 ng·ml(-1)) (p < 0.01) and 15 MIN (9.46 ± 1.27 ng·ml(-1)) (p < 0.05). The S60 elicited significant increases in TT from PRE (7.73 ± 1.88 ng·ml(-1)) to 15 MIN (8.35 ± 1.64 ng·ml(-1)) (p < 0.05), and S90 showed a notable (p < 0.10) difference in TT from PRE (7.96 ± 2.29 ng·ml(-1)) to POST (8.75 ± 2.45 ng·ml(-1)). All the protocols did not significantly increase C (p > 0.05). Using relatively short RI between RT sets augments the acute TT response to hypertrophic and strength schemes. Shortening RI within high-intensity strength RT may lead to concomitant enhancements in muscle strength and size over a longer period of training.
我们假设，在健康的年轻男性中，使用相对较短的组间休息时间（RI）进行全身力量（S）和肥大（H）阻力训练（RT）方案，将显著增加总睾酮（TT）和皮质醇（C）的急性水平。六名 26（±2.4）岁的男性完成了 4 次随机 RT 课程，之后进行了对照课程（R）。S 和 H 方案的容量负荷（组数×重复次数×负荷）相同；S：8 组×3 次重复，85%1RM，H：3 组×10 次重复，70%1RM，所有练习。RI 使用 60 秒（S60，H60）和 90 秒（S90，H90）。血液在运动前（PRE）、运动后即刻（POST）、运动后 15 分钟（15MIN）和运动后 30 分钟（30MIN）抽取。H60 从 PRE（7.32±1.85ng·ml）到 POST（8.87±1.83ng·ml）（p<0.01）、15MIN（8.58±2.15ng·ml）（p<0.01）和 30MIN（8.28±2.16ng·ml）（p<0.05）均显著增加 TT。H90 也从 PRE（8.37±1.93ng·ml）到 POST（9.90±1.25ng·ml）（p<0.01）和 15MIN（9.46±1.27ng·ml）（p<0.05）均显著增加 TT。S60 从 PRE（7.73±1.88ng·ml）到 15MIN（8.35±1.64ng·ml）（p<0.05）显著增加 TT，S90 从 PRE（7.96±2.29ng·ml）到 POST（8.75±2.45ng·ml）的 TT 有显著差异（p<0.10）。所有方案均未显著增加 C（p>0.05）。在 RT 组之间使用相对较短的 RI 会增强肥大和力量方案对 TT 的急性反应。在高强度力量 RT 中缩短 RI 可能会在更长的训练时间内导致肌肉力量和大小的同时增强。
