■营养在训练和运动表现中起着关键作用,膳食补充剂可以使小,但潜在的价值,为实现最佳运动表现做出贡献。这项研究是第一个调查从BCAAs的组合补充的效果,L-瓜氨酸,和A-GPC对运动表现的影响。
■在这个随机的,双盲,交叉研究30名受过训练的男性自行车手(年龄:43.7±8.5岁)在7天的补充期后,完成了20公里自行车计时赛(TT)测试和高强度耐力自行车(HIEC)测试,其中任何一种补充剂都含有8gBCAA,6gL-瓜氨酸,和300mgA-GPC或安慰剂(15g麦芽糖糊精)。每次审判,完成时间的平均值,峰值和平均功率输出,OMNI对感知努力的评级,并计算了20kmTT测试对感知运动的视觉模拟量表(VAS)响应。计算HIEC测试的疲劳时间平均值和感知劳累时的VAS响应。实施饮食摄入和运动模式的程序以在整个研究期间实现一致性。
■在20kmTT(354.27±87.88和321.67±63.65,用于补充和安慰剂试验,分别)和HIEC测试中疲劳时间的显着增加(p=.001)(0:19:49±0:11:13分钟和0:14:33±0:09:59分钟,补充和安慰剂试验,分别)与测试补充剂相比安慰剂。有了测试补充,与安慰剂组相比,HIEC试验中TT峰值功率平均增加11%,至疲劳时间平均增加36.2%.完成时间没有显著改善,平均功率,OMNI对感知努力的评级,或VAS对TT测试中感知的劳累的响应,并且在HIEC测试中感知的劳累的VAS测量中没有显着改善。
■BCAA的组合,L-瓜氨酸,本研究中使用的A-GPC可以提高自行车性能,对寻求提高运动性能的个人可能有用,特别是在需要下半身肌肉力量和耐力的学科。
UNASSIGNED: Nutrition plays a key role in training and athletic performance and dietary supplements can make a small, but potentially valuable, contribution to achieving peak athletic performance. This
study is the first to investigate the effects of supplementation from the combination of BCAAs, L-citrulline, and A-GPC on exercise performance.
UNASSIGNED: In this randomized, double-blind, crossover
study 30 male trained cyclists (age: 43.7 ± 8.5 years) completed a 20 km cycling time
trial (TT) test and a high intensity endurance cycling (HIEC) test following a 7-day supplementation period with either a supplement containing 8 g BCAAs, 6 g L-citrulline, and 300 mg A-GPC or a placebo (15 g maltodextrin). For each
trial, mean values for time to completion, peak and average power output, OMNI rating of perceived exertion, and visual analogue scale (VAS) responses on perceived exertion were computed for the 20 km TT test. Mean values for time to fatigue and VAS responses on perceived exertion were computed for the HIEC test. Procedures for dietary intake and exercise patterns were implemented to achieve consistency throughout the study period.
UNASSIGNED: There was a significant increase (p = .003) in peak power in the 20 km TT (354.27 ± 87.88 and 321.67 ± 63.65, for supplement and placebo trials, respectively) and a significant increase (p = .001) in time to fatigue in the HIEC test (0:19:49 ± 0:11:13 min and 0:14:33 ± 0:09:59 min, for supplement and placebo trials, respectively) with the test supplement compared to the placebo. With the test supplement, there was an average increase in TT peak power of 11% and an average increase in time to fatigue of 36.2% in the HIEC test compared to the placebo. There was no significant improvement in time to completion, average power, OMNI rating of perceived exertion, or VAS responses on perceived exertion in the TT test and no significant improvement in VAS measures of perceived exertion in the HIEC test.
UNASSIGNED: The combination of BCAAs, L-citrulline, and A-GPC used in this
study improves cycling performance and may be useful for individuals seeking to improve athletic performance, particularly in disciplines requiring lower body muscular strength and endurance.