Effects of vitamin E supplementation on recovery from repeated bouts of resistance exercise
Effects of vitamin E supplementation on recovery from repeated bouts of resistance exercise
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DOI：
10.1519/00124278-200311000-00028
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发表时间：
2003-11-01
影响因子：
3.2
通讯作者：
Volek, JS
中科院分区：
文献类型：
--
作者：
Avery, NG;Kaiser, JL;Volek, JS
本研究的目的是检查维生素E（VE）补充剂（1200 IU/天）对重复抗阻运动恢复反应的影响。非阻力训练的男性被分配补充VE（n = 9）或安慰剂（PL; n = 9）3周，然后进行3次阻力锻炼，间隔3天恢复（EX-1，EX-2和EX-3）。在EX-1、EX-2和EX-3评估性能。在EX-1之前和连续10天获得空腹早晨血液样品和感觉到的肌肉酸痛。肌肉酸痛在EX-1后达到峰值，并在第6天逐渐恢复至基线值。在EX-2和EX-3时，下半身和上半身最大力量和爆发力显著降低（p小于或等于0.05）（接近10%）。血浆丙二醛（MDA）在第7天和第8天显著升高。VE和PL在肌肉酸痛、性能指标或血浆MDA方面无显著差异。VE组第1天至第10天的肌酸激酶（CK）曲线下面积显著大于PL组，因为VE组EX-1后CK增加近2倍（分别为404 +/- 146和214 +/- 179 U/L）。维生素E的补充是没有有效的衰减假定的标记膜损伤，氧化应激，和性能递减后，反复发作的全身同心/离心阻力运动。
The purpose of this study was to examine the effects of vitamin E (VE) supplementation (1200 IU/day) on recovery responses to repeated bouts of resistance exercise. Non-resistance trained men were assigned to supplement with VE (n = 9) or placebo (PL; n = 9) for 3 weeks and then perform 3 resistance exercise sessions separated by 3 days of recovery (EX-1, EX-2, and EX-3). Performance was assessed at EX-1, EX-2, and EX-3. Fasting morning blood samples and perceived muscle soreness were obtained before EX-1 and for 10 consecutive days. Muscle soreness peaked after EX-1 and gradually returned to baseline values by day 6. Lower and upper body maximal strength and explosive power were significantly (p less than or equal to 0.05) decreased at EX-2 and EX-3 (similar to10%). Plasma malondialdehyde (MDA) was significantly elevated on days 7 and 8. There were no significant differences between VE and PL in muscle soreness, performance measures, or plasma MDA. Creatine kinase (CK) area under the curve from day I to day 10 was significantly greater for VE because of a nearly 2-fold greater increase in CK after EX-1 in VE, compared with PL (404 +/- 146 and 214 +/- 179 U/L, respectively). VE supplementation was not effective at attenuating putative markers of membrane damage, oxidative stress, and performance decrements after repeated bouts of whole-body concentric/eccentric resistance exercise.