The effect of whey protein supplementation with and without creatine monohydrate combined with resistance training on lean tissue mass and muscle strength
The effect of whey protein supplementation with and without creatine monohydrate combined with resistance training on lean tissue mass and muscle strength
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DOI：
10.1123/ijsnem.11.3.349
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发表时间：
2001-09-01
影响因子：
2.5
通讯作者：
Smith-Palmer, T
中科院分区：
文献类型：
--
作者：
Burke, DG;Chilibeck, PD;Smith-Palmer, T
我们的目的是评估 36 名男性在 6 周阻力训练期间的肌肉适应情况，这些男性被随机分配补充乳清蛋白（W；1.2 g/kg/天）、乳清蛋白和一水肌酸（WC，0.1 g/kg/天）或安慰剂（P；1.2 g/kg/天麦芽糖糊精）。测量指标包括通过双能 X 射线吸收测定法测定的瘦组织质量、卧推和深蹲力量（最多重复 1 次）以及膝关节伸展/屈曲峰值扭矩。与其他组相比，WC 组的瘦肉组织质量增加幅度更大，与 P 组相比，W 组的瘦肉组织质量增加幅度更大 (p < .05)。与 W 和 P 相比，WC 的卧推强度增加幅度更大 (p < .05)。膝关节伸展峰值扭矩随着 WC 和 W 训练的增加而增加 (p < .05)，但 P 则没有。所有其他测量值在各组中的增加程度相似。在不补充补充剂的情况下继续训练 6 周，所有组都维持了力量和瘦组织质量。与单独进行训练的男性相比，在阻力训练时补充乳清蛋白的男性在膝关节伸展峰值扭矩和瘦组织质量方面表现出更大的改善。与仅补充乳清蛋白或安慰剂的男性相比，补充乳清蛋白和肌酸组合的男性在瘦组织质量和卧推方面有更大的增加。然而，并不是所有的力量测量都通过补充得到改善，因为补充肌酸和/或乳清蛋白的受试者与接受安慰剂的受试者相比，下蹲力量和膝关节弯曲峰值扭矩有类似的增加。
Our purpose was to assess muscular adaptations during 6 weeks of resistance training in 36 males randomly assigned to supplementation with whey protein (W; 1.2 g/kg/day), whey protein and creatine monohydrate (WC, 0.1 g/kg/day), or placebo (P; 1.2 g/kg/day maltodextrin). Measures included lean tissue mass by dual energy x-ray absorptiometry, bench press and squat strength (1-repetition maximum), and knee extension/flexion peak torque. Lean tissue mass increased to a greater extent with training in WC compared to the other groups, and in the W compared to the P group (p < .05). Bench press strength increased to a greater extent for WC compared to W and P (p < .05). Knee extension peak torque increased with training for WC and W (p < .05), but not for P. All other measures increased to a similar extent across groups. Continued training without supplementation for an additional 6 weeks resulted in maintenance of strength and lean tissue mass in all groups. Males that supplemented with whey protein while resistance training demonstrated greater improvement in knee extension peak torque and lean tissue mass than males engaged in training alone. Males that supplemented with a combination of whey protein and creatine had greater increases in lean tissue mass and bench press than those who supplemented with only whey protein or placebo. However, not all strength measures were improved with supplementation, since subjects who supplemented with creatine and/or whey protein had similar increases in squat strength and knee flexion peak torque compared to subjects who received placebo.