β-羟基-β-甲基丁酸对集训期间跆拳道运动员肌肉的保护
Effect of β-hydroxy-β-methylbutyric acid on muscle protection during taekwondo team training
宋博雅 1姜涛 2苟波 1王启荣 3刘强 4冯昊天5
作者信息
- 1. 西安体育学院国家体育总局运动技术分析与技能评定重点实验室,陕西西安 710068;体育智能装备关键技术陕西省高校工程研究中心,陕西西安 710068
- 2. 西安体育学院国家体育总局运动技术分析与技能评定重点实验室,陕西西安 710068
- 3. 国家体育总局运动医学研究所,北京 100029
- 4. 西安体育学院研究生部,陕西西安 710068
- 5. 内蒙古乳业技术研究院,内蒙古呼和浩特 750306
- 折叠
摘要
[目的]探究跆拳道运动集训期间补充β-羟基-β-甲基丁酸(HMβ)对肌肉保护的影响.[方法]招募选取自愿参与试验的18名跆拳道专项队二级以上男性受试者,随机分为试验组与对照组(各9人).试验组周一至周六每日上、下午训练前、后分4次(与运动间隙超过30 min),冲服添加HMβ功能成分的运动奶粉各1袋(25 g/袋,HMβ添加量为500 mg/袋),对照组摄入等量市售普通奶粉.干预前、后及每周一晨采集血样分析生化指标的变化情况,并进行试验前后跆拳道专项能力的定量测试.[结果]相比于对照组,试验组干预后促炎因子白介素-6未见明显变化,血浆谷氨酰胺水平显著提升(P＜0.05),血浆甘氨酸水平未见明显下降;试验组干预后肌红蛋白显著下降(P＜0.05),血清总胆固醇、甘油三酯及低密度脂蛋白胆固醇水平均显著低于对照组(P＜0.05),血尿素氮降幅小于对照组;试验组20 s原地提膝次数及30 s收腹跳次数均有提升,且增幅均超过对照组.[结论]训练期间补充HMβ能降低炎症程度、改善免疫功能、维持肌细胞膜稳定性、提高氮存量并强化肌肉重塑能力而发挥保护功能,提高肌肉对训练的适应性,以保障其竞技状态.
Abstract
[Objective]To investigate the effect of β-hydroxy-β-methylbutyrate(HMβ)supplementation on muscle protection in taekwondo players during training.[Methods]18 male subjects above the second level of the Taekwondo special Team who voluntarily participated in the experiment were recruited and divided into experimental and control groups(9 each)according to the conditions.The experimental group consumed one sachet(25 g/bag,the amount of HMβ added was 500 mg/bag)of HMβ-added milk powder before and after training(with a break of more than 30 min)in the morning and afternoon from Monday to Saturday,while the control group consumed the same amount of commercially available regular milk powder.Blood samples were collected before and after the intervention and on Monday mornings to analyze the changes in biochemical indicators,and quantitative tests of Taekwondo-specific abilities were performed before and after the experiment.[Results]Compared with the control group,the experimental group did not see significant changes in the pro-inflammatory factor interleukin-6,plasma glutamine levels were significantly increased(P＜0.05),and plasma glycine levels did not see a significant decrease after intervention;Myoglobin was significantly decreased in the experimental group after intervention(P＜0.05),and serum levels of total cholesterol,triglyceride,and LDL cholesterol were significantly lower than those of the control group(P＜0.05).The decrease of blood urea nitrogen was smaller than that of the control group;The number of 20-second in situ knee lifts and the number of 30-second tuck jumps in the experimental group were both improved and increased more than that of the control group.[Conclusion]HMβ supplementation during training can exert protective functions by reducing inflammation,improving immune function,maintaining muscle membrane stability,increasing nitrogen stores,and strengthening muscle remodeling ability,improving muscle adaptability to training to ensure their competitive status.
关键词
β-羟基-β-甲基丁酸/运动营养补充剂/肌肉损伤/蛋白代谢/炎症因子Key words
β-hydroxy-β-methylbutyric acid/sports nutrition supplement/muscle damage/protein metabolism/inflammatory factor引用本文复制引用
基金项目
国家重点研发计划(2019YFF0301702-02-02)
出版年
2024
国家科技期刊平台
NSTL
万方数据