Effect of magnesium supplementation on strength training in humans.
Effect of magnesium supplementation on strength training in humans.
复制标题
补充镁对人类力量训练的影响。
DOI：
10.1080/07315724.1992.10718233
复制
发表时间：
1992
影响因子：
3.5
通讯作者：
T. Haley
中科院分区：
文献类型：
--
作者：
L. Brilla;T. Haley
未标记
本研究调查了26名18-30岁的未训练受试者（14名为对照组，12名为补充镁组，M）在为期7周的双盲力量训练计划中，膳食镁（Mg）对力量发展的影响。分析受试者3天的饮食记录，计算镁含量。C接受安慰剂，M接受补充剂（氧化镁），使镁摄入量（包括饮食）达到8 mg/kg体重/天。用生物电阻抗法评估身体成分。使用Orthotron以120度/秒的速度进行前后股四头肌扭矩（T）测量。每名受试者进行三组10次重复，腿部推举和腿部伸展，每周三次。两组均获得了力量，但是，结果表明，当使用前值作为协变量时，M组的绝对T、根据体重调整的相对T（T/BWT）和根据瘦体重调整的相对T（T/LBM）显著（p <0.05）增加。M始终大于C（T：211 vs 174 Nm; T/BWT：3.07 vs 2.58 Nm/kg; T/LBM：3.84 vs 3.36 Nm/kg）。
结论
在力量训练后，M组与C组的T增加有显著差异。Mg的作用可能是在蛋白质合成的核糖体水平。
UNLABELLED
This study investigated the effects of dietary magnesium (Mg) on strength development during a double-blind, 7-week strength training program in 26 untrained subjects (14 = control, C and 12 = Mg supplemented, M), 18-30 years old. Subjects' 3-day diet records were analyzed and Mg content was calculated. C received a placebo and M received a supplement (Mg oxide) to bring Mg intake, including diet, to 8 mg/kg body weight/day. Body composition was assessed with bioelectrical impedance. Pre and post quadriceps torque (T) measurements were made with an Orthotron at 120 deg/sec. Each subject performed three sets of 10 reps, leg press and leg extension, three times/week. Both groups gained strength, however, results indicated a significant (p less than 0.05) increase for the M group compared to the C group in absolute T, relative T adjusted for body weight (T/BWT), and relative T adjusted for lean body mass (T/LBM) when pre values were used as the covariate. M was consistently greater than C (T: 211 vs 174 Nm; T/BWT: 3.07 vs 2.58 Nm/kg; T/LBM: 3.84 vs 3.36 Nm/kg).
CONCLUSION
Significant differences in T gains after strength training were demonstrated in M vs C. Mg's role may be at the ribosomal level in protein synthesis.