Wittke Andreas, von Stengel Simon, Hettchen Michael, Fröhlich Michael, Giessing Jürgen, Lell Michael, Scharf Michael, Bebenek Michael, Kohl Matthias, Kemmler Wolfgang
Institute of Medical Physics, Friedrich-Alexander University of Erlangen-Nürnberg, Henkestraße 91, 91052 Erlangen, Germany.
Department of Sports Science, University of Kaiserslautern, Erwin Schrödinger-Straße, 67663 Kaiserslautern, Germany.
Biomed Res Int. 2017;2017:3619398. doi: 10.1155/2017/3619398. Epub 2017 Jun 1.
High intensity (resistance exercise) training (HIT) defined as a "single set resistance exercise to muscular failure" is an efficient exercise method that allows people with low time budgets to realize an adequate training stimulus. Although there is an ongoing discussion, recent meta-analysis suggests the significant superiority of multiple set (MST) methods for body composition and strength parameters. The aim of this study is to determine whether additional protein supplementation may increase the effect of a HIT-protocol on body composition and strength to an equal MST-level. One hundred and twenty untrained males 30-50 years old were randomly allocated to three groups: (a) HIT, (b) HIT and protein supplementation (HIT&P), and (c) waiting-control (CG) and (after cross-over) high volume/high-intensity-training (HVHIT). HIT was defined as "single set to failure protocol" while HVHIT consistently applied two equal sets. Protein supplementation provided an overall intake of 1.5-1.7 g/kg/d/body mass. Primary study endpoint was lean body mass (LBM). LBM significantly improved in all exercise groups ( ≤ 0.043); however only HIT&P and HVHIT differ significantly from control ( ≤ 0.002). HIT diverges significantly from HIT&P ( = 0.017) and nonsignificantly from HVHIT ( = 0.059), while no differences were observed for HIT&P versus HVHIT ( = 0.691). In conclusion, moderate to high protein supplementation significantly increases the effects of a HIT-protocol on LBM in middle-aged untrained males.
高强度（抗阻运动）训练（HIT）被定义为“进行一组至肌肉疲劳的抗阻运动”，是一种有效的运动方法，能让时间紧张的人获得足够的训练刺激。尽管仍在进行相关讨论，但最近的荟萃分析表明，多组训练（MST）方法在身体成分和力量参数方面具有显著优势。本研究的目的是确定额外补充蛋白质是否能使HIT方案对身体成分和力量的影响提高到与MST相当的水平。120名年龄在30至50岁之间未经训练的男性被随机分为三组：（a）HIT组，（b）HIT加蛋白质补充组（HIT&P），以及（c）等待对照组（CG）和（交叉后）高容量/高强度训练组（HVHIT）。HIT被定义为“一组至疲劳方案”，而HVHIT始终进行两组等量训练。蛋白质补充的总体摄入量为1.5 - 1.7克/千克/天/体重。主要研究终点是去脂体重（LBM）。所有运动组的LBM均有显著改善（≤0.043）；然而，只有HIT&P组和HVHIT组与对照组有显著差异（≤0.002）。HIT组与HIT&P组有显著差异（=0.017），与HVHIT组差异不显著（=0.059），而HIT&P组与HVHIT组之间未观察到差异（=0.691）。总之，中度至高度蛋白质补充能显著增强HIT方案对中年未经训练男性LBM的影响。
