Effect of β-Alanine Plus Sodium Bicarbonate on High-Intensity Cycling Capacity
Effect of β-Alanine Plus Sodium Bicarbonate on High-Intensity Cycling Capacity
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DOI：
10.1249/mss.0b013e3182188501
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发表时间：
2011-10-01
影响因子：
4.1
通讯作者：
Sunderland, Caroline D.
中科院分区：
文献类型：
--
作者：
Sale, Craig;Saunders, Bryan;Sunderland, Caroline D.
塞尔，C. B.桑德斯，S.哈德森，J. A.怀斯，R. C.哈里斯和C. D.桑德兰。-丙氨酸加碳酸氢钠对高强度循环能力的影响。医学科学。体育Exerc。，第43卷第10期，第1972-1978页，2011年。目的：我们研究了补充-丙氨酸和碳酸氢钠对高强度循环能力的影响。方法：20名男性（年龄= 25 +/- 5岁，身高= 1.79 +/- 0.06 m，体重= 80.0 +/- 10.3 kg）根据最大功率分为安慰剂组(P)或β -丙氨酸组（BA; 6.4 g.d(-1) 4周），以最大功率110% （CCT110%）完成4次循环能力测试，以确定疲劳时间（TTE）和总工作量。在补充前（麦芽糊精[MD]）和补充后（MD和碳酸氢钠[SB]）分别进行两次（习惯化和基线）CCT110%，采用交叉设计，在试验之间休息2天，创建4种研究条件（PMD， PSB， BAMD和BASB）。在基线、运动前、运动后立即和运动后5分钟测定血液pH值、乳酸、碳酸氢盐和碱过量。数据分析采用重复测量方差分析。结果：在所有条件下，补充后TTE均增加（PMD +1.6%, PSB +6.5%, BAMD +12.1%, BASB +16.2%）。与补充前相比，BAMD和BASB均显著改善了TTE (P
SALE, C., B. SAUNDERS, S. HUDSON, J. A. WISE, R. C. HARRIS, and C. D. SUNDERLAND. Effect of beta-Alanine Plus Sodium Bicarbonate on High-Intensity Cycling Capacity. Med. Sci. Sports Exerc., Vol. 43, No. 10, pp. 1972-1978, 2011. Purpose: We examined the effect of beta-alanine supplementation plus sodium bicarbonate on high-intensity cycling capacity. Methods: Twenty males (age = 25 +/- 5 yr, height = 1.79 +/- 0.06 m, body mass = 80.0 +/- 10.3 kg) were assigned to either a placebo (P) or a beta-alanine (BA; 6.4 g.d(-1) for 4 wk) group based on power max, completing four cycling capacity tests at 110% of power max (CCT110%) to determine time to exhaustion (TTE) and total work done. A CCT110% was performed twice (habituation and baseline) before supplementation (with maltodextrin [MD]) and twice after supplementation (with MD and with sodium bicarbonate [SB]), using a crossover design with 2 d of rest between trials, creating four study conditions (PMD, PSB, BAMD, and BASB). Blood pH, Lactate, bicarbonate and base excess were determined at baseline, before exercise, immediately after exercise, and 5 min after exercise. Data were analyzed using repeated-measures ANOVA. Results: TTE was increased in all conditions after supplementation (+1.6% PMD, +6.5% PSB, +12.1% BAMD, and +16.2% BASB). Both BAMD and BASB resulted in significantly improved TTE compared with that before supplementation (P