共查询到19条相似文献，搜索用时 93 毫秒
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采用文献资料法,介绍了L-肉碱的生理功能,运动训练对L-肉碱的影响,以及L-肉碱对不同形式运动能力的影响。综述了L-肉碱在运动训练中的研究现状及该领域研究中存在的问题,L-肉碱在运动训练中的研究意义。将来值得研究的方向。以此为补充左旋肉碱在提高运动能力中的应用提供一定的理论依据。 相似文献
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外源性补充L-肉碱与运动性疲劳的研究综述 总被引：1，自引：0，他引：1
为进一步探讨合理补充L-肉碱在运动训练中的意义,主要就L-肉碱的来源和代谢,L-肉碱的生理功能及其作为强力手段增强机体抗疲劳能力的具体机制做了进一步的阐述。并综述了运动性疲劳的概况以及L-肉碱在运动训练中的意义、将来值得研究的方向。 相似文献
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采用文献资料法,介绍了L-肉碱的生理功能和对运动训练的影响,综述了L-肉碱对运动后恢复的作用及机制,旨在为左旋肉碱在提高运动能力中的应用提供理论依据。 相似文献
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运动减肥与肉碱的关系 总被引：11，自引：1，他引：10
分析脂肪代谢的全过程，认为肉碱是脂肪酸β氧化的底物，长链脂肪转运进入线粒体的载体，进而阐述了肉碱可用于减肥以及肉碱与运动能力的重要关系。 相似文献
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《西安体育学院学报》2016,(1):107-112
目的探讨L-肉碱及运动对超重小鼠心肌脂代谢的影响。方法 C57BL/6小鼠给予3周高脂饮食建立超重模型,造模成功后的小鼠随机分为超重对照组(OC组)、超重肉碱组(OL组)、超重运动组(OE组)和超重运动结合肉碱组(OEL组)。OE和OEL组小鼠进行6周的游泳训练,6次/周;同时OL和OEL组小鼠补充L-肉碱。检测心肌H-FABP、PPARα蛋白表达量及FFA、肉碱含量。结果 OL和OEL组心肌肉碱含量较OC组升高;OE和OEL组心肌FFA含量均低于OC组,且OEL组低于OE组;OE和OEL组心肌H-FABP表达量较OC组升高;干预各组心肌PPARα的表达量均高于OC组,且OEL组高于OE组。结论 (1)有氧运动可上调心肌H-FABP和PPARα蛋白表达水平,促进心肌对FFA的氧化利用。(2)L-肉碱的补充对超重小鼠心肌H-FABP的蛋白表达无明显调控作用。(3)运动结合L-肉碱降低心肌FFA含量的效果优于单纯运动,其机制与上调PPARα蛋白表达有关。 相似文献
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饮食营养视角中的健康、运动与减肥--从女大学生食素谈起 总被引：12，自引：0，他引：12
张永军 《武汉体育学院学报》2005,39(1):51-54
采用文献资料和实证研究的方法,对女大学生的饮食习惯进行分析,发现女大学生绝对食素易导致身体出现亚健康状态;在机体承受较强运动负荷的状况下,食素者的心肺功能各项指标低于非食素者,运动能力降低;红肉是肉碱的主要食物来源,肉碱有利减肥;绝对食素不利健康。建议饮食荤素合理搭配,使体液呈弱碱性方能保持健康。 相似文献
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食素女大学生的身体"亚健康"状态及运动能力 总被引：3，自引：0，他引：3
对女大学生的饮食习惯进行分析,发现女大学生绝对食素易导致身体出现亚健康状态;在机体承受较强运动负荷的状况下,食素者的心肺功能各项指标低于非食素者,运动能力降低;红肉是肉碱的食物主要来源,肉碱有利减肥;绝对食素不利健康.女大学生饮食应荤、素合理搭配,使体液呈弱碱性方能保持健康. 相似文献
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肉碱是作为载体以酰基的形式将长链脂肪从线粒体外运载到膜内,促进脂肪的B-氧化,它如同蛋白质,脂肪等一样,是人体须的营养物质。本文从肉碱的化学结构,生理功能,,与运动能力关系及抗疲劳的作用进行阐述。 相似文献
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M. B. Cooper D. A. Jones R. H. T. Edwards C. Corbucci G. Montanari C. Trevisani 《Journal of sports sciences》2013,31(2):79-87
Carnitine is an essential co‐factor in the catabolism of fats as an energy source. The primary purpose of this study was to investigate the effect of running a marathon on the metabolism of carnitine by endurance‐trained athletes, and to evaluate the effect of carnitine administration on the performance of such exercise. The effects of marathon running on mitochondrial enzymes and cellular anti‐oxidants were also examined to assess whether the expression of these activities is altered by exercise. Subjects were 10 experienced male marathon runners aged between 19 and 25 years. Running a marathon caused a fall in the plasma content of unesterified carnitine (37%) and an increase in the level of acetylcarnitine present (288%). Loading of the athletes with L‐carnitine for 10 days before running a marathon abolished the exercise‐induced fall in plasma‐free carnitine (P<0.05) whilst amplifying the production of acetylcarnitine (P<0.05). Carnitine loading of the athletes studied made no detectable improvement in performance of the marathon (P > 0.05). Cytochrome oxidase, succinate cytochrome C reductase and Superoxide dismutase activities present in skeletal muscle were unaltered by marathon running. However, such exercise caused a large increase in the tissue content of oxidized glutathione (189%) at the expense of reduced glutathione (–18%). 相似文献
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艺术体操运动员体重控制方法研究 总被引：4，自引：0，他引：4
艺术体操运动的特点要求运动员体重轻、体形匀，因此体重控制是艺术体操运动员在训练过程中一个十分常见的问题。分析控制体重的实质，提出了艺术体操运动员体重控制的方法，并详细介绍了肉碱控制体重的生理机制及其在艺术体操运动员体重控制中的应用。 相似文献
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The effect of marathon running on carnitine metabolism and on some aspects of muscle mitochondrial activities and antioxidant mechanisms 总被引：2，自引：0，他引：2
M B Cooper D A Jones R H Edwards G C Corbucci G Montanari C Trevisani 《Journal of sports sciences》1986,4(2):79-87
Carnitine is an essential co-factor in the catabolism of fats as an energy source. The primary purpose of this study was to investigate the effect of running a marathon on the metabolism of carnitine by endurance-trained athletes, and to evaluate the effect of carnitine administration on the performance of such exercise. The effects of marathon running on mitochondrial enzymes and cellular anti-oxidants were also examined to assess whether the expression of these activities is altered by exercise. Subjects were 10 experienced male marathon runners aged between 19 and 25 years. Running a marathon caused a fall in the plasma content of unesterified carnitine (37%) and an increase in the level of acetylcarnitine present (288%). Loading of the athletes with L-carnitine for 10 days before running a marathon abolished the exercise-induced fall in plasma-free carnitine (P less than 0.05) whilst amplifying the production of acetylcarnitine (P less than 0.05). Carnitine loading of the athletes studied made no detectable improvement in performance of the marathon (P greater than 0.05). Cytochrome oxidase, succinate cytochrome C reductase and superoxide dismutase activities present in skeletal muscle were unaltered by marathon running. However, such exercise caused a large increase in the tissue content of oxidized glutathione (189%) at the expense of reduced glutathione (-18%). 相似文献
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L-肉毒碱对足球运动员训练过程中生理机能的影响研究 总被引：11，自引：0，他引：11
以足球专项大学生为对象,采用双盲法分别口服Ｌ－肉毒碱和安慰剂３０天,观察训练前后身体机能及运动能力的变化。结果显示：大强度运动训练后对照组各项有氧能力指标均显著下降,呈明显的疲劳状态,而实验组最大摄氧量仍保持原水平,通气阈略上升,尤其是代表单纯有氧能力的通气阈时作功显著增大。研究表明,实验组有氧能力的改善主要是由于组织内脂肪供能的加强所致,而适当补充Ｌ－肉毒碱可能正是改善脂肪代谢的关键。 相似文献
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刘冬 《哈尔滨体育学院学报》2007,25(6)
系统地分析了左旋肉碱对人体运动能力的影响,并对其作为增强运动能力的具体作用进一步的探讨,为左旋肉碱在提高运动能力中的应用提供一定的理论依据。 相似文献
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《European Journal of Sport Science》2013,13(2):191-199
Abstract The increased energy demand that occurs with incremental exercise intensity is met by increases in the oxidation of both endogenous fat and carbohydrate stores up to an intensity of ~70% V˙O2max in trained individuals. However, when exercise intensity increases beyond this workload, fat oxidation rates decline, both from a relative and absolute perspective. As endogenous glycogen use is accelerated, glycogen stores can become depleted, ultimately resulting in fatigue and the inability to maintain high intensity, submaximal exercise (>70% V˙O2max). Despite a considerable accumulation of knowledge that has been gained over the past half century, the precise mechanism(s) regulating muscle fuel selection and underpinning the aforementioned decline in fat oxidation remain largely unclear. A greater understanding would undoubtedly lead to novel strategies to increase fat utilization and, as such, improve exercise capacity. The present review primarily addresses one of the most prominent theories to explain the phenomenon of diminished fat oxidation during high intensity, submaximal exercise; a reduced availability of muscle free carnitine for mitochondrial fat translocation. This is discussed in the light of recent work in this area taking advantage of the discovery that muscle carnitine content can be increased in vivo in humans. Furthermore, the evidence supporting the recently proposed theory that reduced muscle co-enzyme A availability to several key enzymes in the fat oxidation pathway may also exert a degree of control over muscle fuel selection during exercise is also considered. Strong correlational evidence exists that muscle free carnitine availability is likely to be a key limiting factor to fat oxidation during high intensity, submaximal exercise. However, it is concluded that further intervention studies manipulating the muscle carnitine pool in humans are required to establish a direct causal role. In addition, it is concluded that while a depletion of muscle coenzyme A availability during exercise also offers a viable mechanism for impairing fat oxidation, at present, this remains speculative. 相似文献
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目前,已有大量实验表明,左旋肉碱、泛酸、支链氨基酸、辅酶Q10等营养素对于运动疲劳有延缓作用,作为强有力的运动营养补剂已经被广泛运用到体育锻炼和抗运动性疲劳当中。该文采用文献资料法对运动性疲劳的变化特征进行综述,并且针对不同机制合理使用补给做出阐释和说明,旨在为运动训练水平的提升和大众健身能力的提高提供科学、有效的参考。 相似文献
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通过文献资料法、逻辑分析法对部分女大学生的全素食行为进行分析,发现绝对的素食的女大学生出现种种不适,呈现亚健康状态;同时正常的生理机能受到损伤,在一定强度的有氧运动时,运动能力明显低于非素食者。左旋肉碱是减脂的必需辅酶,红肉是左旋肉碱的主要食物来源。绝对食素不利于健康,要在学生当中大力宣传、普及营养知识。 相似文献