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The effect of a commercially available caffeine based dietary supplement on 40-kilometer time trial performance.

机译:市售的基于咖啡因的膳食补充剂对40公里计时试验性能的影响。

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摘要

Purpose. To determine whether or not the nutritional supplement PreRace containing L-Taurine, Citrulline Malate, Quercetin, DiMethyl Amino Ethanol, Caffeine, Metabromine, Catechin, and Malic acid will improve performance in an indoor 40 kilometer cycling time trial.;Methods. Seven male cyclists ages 21--58 participated in a placebo-controlled investigation which consisted of two trials in which they consumed either the supplement PreRace or aloe vera juice. In each of the trials the placebo or supplement was mixed with a sports beverage. Subjects performed a 40 kilometer time trial and measurements of oxygen consumption and lactate were taken every 15 minutes as well as 3 kilometers from the end.;Results. Treatment effects were observed for average work, average watts, average velocity, oxygen consumption, heart rate, RPE, lactate, percentage of lactate threshold watts, and percentage of VO 2max. No significant difference was observed in time to complete trials even though the experimental group finished an average of 3 minutes and 17 seconds faster.;Conclusion. Ingestion of the supplement in this study results in effects that may result in an improvement in performance. A larger study is needed to determine if these results are reproducible to a statistically significant level
机译:目的。在室内40公里骑行时间试验中,确定含L-牛磺酸,瓜氨酸瓜氨酸,槲皮素,二甲基氨基乙醇,咖啡因,偏溴酸盐,儿茶素和苹果酸的营养补品PreRace是否会改善性能。七名21-58岁的男性自行车运动员参加了安慰剂对照的研究,其中包括两项试验,他们食用了补充的PreRace或芦荟汁。在每个试验中,将安慰剂或补充剂与运动饮料混合。受试者进行了40公里的时间试验,每15分钟以及从终点开始3公里进行一次氧气消耗量和乳酸的测量。观察到平均功,平均瓦数,平均速度,耗氧量,心率,RPE,乳酸,乳酸阈值瓦数百分比和VO 2max百分比的治疗效果。即使实验组平均完成速度快了3分17秒,在完成试验的时间上也没有观察到显着差异。在这项研究中摄入补品会产生影响,可能会导致性能改善。需要进行更大的研究以确定这些结果是否可重复到统计学上的显着水平

著录项

  • 作者

    Weidauer, Lee A.;

  • 作者单位

    South Dakota State University.;

  • 授予单位 South Dakota State University.;
  • 学科 Health Sciences Nutrition.;Health Sciences Recreation.
  • 学位 M.S.
  • 年度 2009
  • 页码 74 p.
  • 总页数 74
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 预防医学、卫生学;预防医学、卫生学;
  • 关键词

  • 入库时间 2022-08-17 11:38:03

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