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首頁> 外文學(xué)位 >The effect of a commercially available caffeine based dietary supplement on 40-kilometer time trial performance.
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The effect of a commercially available caffeine based dietary supplement on 40-kilometer time trial performance.

機譯：市售的基于咖啡因的膳食補充劑對40公里計時試驗性能的影響。

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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
機譯：目的。在室內(nèi)40公里騎行時間試驗中，確定含L-?；撬幔习彼峁习彼?，槲皮素，二甲基氨基乙醇，咖啡因，偏溴酸鹽，兒茶素和蘋果酸的營養(yǎng)補品PreRace是否會改善性能。七名21-58歲的男性自行車運動員參加了安慰劑對照的研究，其中包括兩項試驗，他們食用了補充的PreRace或蘆薈汁。在每個試驗中，將安慰劑或補充劑與運動飲料混合。受試者進(jìn)行了40公里的時間試驗，每15分鐘以及從終點開始3公里進(jìn)行一次氧氣消耗量和乳酸的測量。觀察到平均功，平均瓦數(shù)，平均速度，耗氧量，心率，RPE，乳酸，乳酸閾值瓦數(shù)百分比和VO 2max百分比的治療效果。即使實驗組平均完成速度快了3分17秒，在完成試驗的時間上也沒有觀察到顯著差異。在這項研究中攝入補品會產(chǎn)生影響，可能會導(dǎo)致性能改善。需要進(jìn)行更大的研究以確定這些結(jié)果是否可重復(fù)到統(tǒng)計學(xué)上的顯著水平

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