团队运动运动员在长时间间歇运动后补充碳水化合物7天对次最大强度运动时运动表现和能量代谢的影响。

The effect of additional carbohydrate supplements for 7 days after prolonged interval exercise on exercise performance and energy metabolism during submaximal exercise in team-sports athletes.

作者信息

Park Hun-Young, Kim Jisu, Park Miyoung, Chung Nana, Lim Kiwon

出版信息

J Exerc Nutrition Biochem. 2018 Mar 30;22(1):29-34. doi: 10.20463/jenb.2018.0005.

DOI:10.20463/jenb.2018.0005

PMID:29673243

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5909074/

Abstract

PURPOSE

The purpose of our study was to determine the effectiveness of carbohydrate loading by additional carbohydrate supplements for 7 days after prolonged interval exercise on exercise performance and energy metabolism during submaximal exercise in team-sports athletes.

METHODS

Twenty male team-sports athletes (14 soccer and 6 rugby players) volunteered to participate in the study and were equally divided into the experimental group (EXP, n=10) performing additional carbohydrate supplementation for 7 days after prolonged interval exercise until blood glucose level reaches 50 mg/dL or less and the control group (CON, n=10). Then, maximal oxygen consumption (VO2max) and minute ventilation (VE), oxygen consumption (VO2), carbon dioxide excretion (VCO2), respiratory exchange ratio (RER), blood glucose level, and blood lactate level were measured in all team-sports players during submaximal exercise corresponding to 70% VO2max before and after intervention.

RESULTS

There was no significant interaction in all parameters, but team-sports players in the EXP presented more improved VO2max (CON vs EXP = vs 5.3% vs 6.3%), VE (CON vs EXP = vs 3.8% vs 6.6%), VO2 (CON vs EXP = vs 8.5% vs 9.9%), VCO2 (CON vs EXP = vs 2.8% vs 4.0%), blood glucose level (CON vs EXP = vs -12.9% vs -7.6%), and blood lactate level (CON vs EXP = -18.2% vs -25%) compared to those in the CON.

CONCLUSION

These findings showed that additional carbohydrate supplementation conducted in our study is not effective in exercise performance and energy metabolism during submaximal exercise.

摘要

目的

我们研究的目的是确定在团队运动运动员长时间间歇运动后额外补充碳水化合物7天对次最大强度运动时运动表现和能量代谢的影响。

方法

20名男性团队运动运动员（14名足球运动员和6名橄榄球运动员）自愿参与本研究，并被平均分为实验组（EXP，n = 10），在长时间间歇运动后额外补充碳水化合物7天，直至血糖水平达到50mg/dL或更低，以及对照组（CON，n = 10）。然后，在干预前后，对所有团队运动运动员在相当于70%最大摄氧量（VO2max）的次最大强度运动期间测量最大摄氧量（VO2max）、分钟通气量（VE）、耗氧量（VO2）、二氧化碳排出量（VCO2）、呼吸交换率（RER）、血糖水平和血乳酸水平。

结果

所有参数均无显著交互作用，但与对照组相比，实验组的团队运动运动员在VO2max（CON组 vs EXP组 = 5.3% vs 6.3%）、VE（CON组 vs EXP组 = 3.8% vs 6.6%）、VO2（CON组 vs EXP组 = 8.5% vs 9.9%）、VCO2（CON组 vs EXP组 = 2.8% vs 4.0%）、血糖水平（CON组 vs EXP组 = -12.9% vs -7.6%）和血乳酸水平（CON组 vs EXP组 = -18.2% vs -25%）方面有更明显的改善。