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首页> 外文期刊>Journal of the International Society of Sports Nutrition >Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes
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Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes

机译：咖啡因补充对精英和培训运动员身体性能和情绪维度的影响

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BACKGROUND:Caffeine supplementation (CAFF) has an established ergogenic effect on physical performance and the psychological response to exercise. However, few studies have compared the response to CAFF intake among athletes of different competition level. This study compares the acute effects of CAFF on anaerobic performance, mood and perceived effort in elite and moderately-trained recreational athletes.METHODS:Participants for this randomized, controlled, crossover study were 8 elite athletes (in the senior boxing national team) and 10 trained-recreational athletes. Under two experimental conditions, CAFF supplementation (6?mg/kg) or placebo (PLAC), the athletes completed a Wingate test. Subjective exertion during the test was recorded as the rating of perceived exertion (RPE) both at the general level (RPEsubgeneral/sub) and at the levels muscular (RPEsubmuscular/sub) and cardiorespiratory (RPEsubcardio/sub). Before the Wingate test, participants completed the questionnaires Profiles of Moods States (POMS) and Subjective Vitality Scale (SVS).RESULTS:In response to CAFF intake, improvements were noted in Wsubpeak/sub (11.22?±?0.65 vs 10.70?±?0.84; p?=?0.003; [Formula: see text] =0.44), Wsubavg/sub (8.75?±?0.55 vs 8.41 0.46; p?=?0.001; [Formula: see text] =0.53) and time taken to reach Wsubpeak/sub (7.56?±?1.58 vs 9.11?±?1.53; p???0.001; [Formula: see text] =0.57) both in the elite and trained-recreational athletes. However, only the elite athletes showed significant increases in tension (+?325%), vigor (+?31%) and SVS (+?28%) scores after the intake of CAFF compared to levels recorded under the condition PLAC (p???0.05). Similarly, levels of vigor after consuming CAFF were significantly higher in the elite than the trained-recreational athletes (+?5.8%).CONCLUSIONS:CAFF supplementation improved anaerobic performance in both the elite and recreational athletes. However, the ergogenic effect of CAFF on several mood dimensions and subjective vitality was greater in the elite athletes.
机译：背景：咖啡因补充（CAFF）对体育表现和对运动的心理反应具有既定的生成效果。然而，很少有研究比较了不同竞争水平的运动员对CAFF摄入的反应。该研究比较了CAFF对精英和中度训练的娱乐运动员厌氧表现，情绪和感知努力的急性效应。方法：这对随机，控制，交叉研究的参与者是8名精英运动员（在高级拳击国家队）和10训练有素的休闲运动员。在两个实验条件下，Caff补充（6？Mg / kg）或安慰剂（PLACBO），运动员完成了一个有动的测试。测试期间的主观劳动被记录为在一般水平（RPE 常规）和肌肉水平（RPE 肌肉）和心肺部（RPE Cardio ）。在WinGate测试之前，参与者完成了情绪状态（POMS）和主观生命量表（SVS）的问卷调查概况。结果：响应CAFF摄入量，在W 峰值中注意到改进（11.22？±？ 0.65 vs 10.70？±0.84; p？= 0.003; [公式：参见文本] = 0.44），W avg （8.75？±0.055 Vs 8.41 0.46; p？= 0.001; [公式：参见文本] = 0.53）和达到W 峰值（7.56？±1.58 Vs 9.11？±1.53; p ?? 0.001; [公式：参见文本] = 0.57 ）在精英和训练有素的运动员中。然而，只有精英运动员显示张力（+？325％）的显着增加（+？325％），与在条件下的条件下记录的水平相比，Caff在Caff相比（P？

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