Acute caffeine ingestion enhances strength performance and reduces perceived exertion and muscle pain perception during resistance exercise
Acute caffeine ingestion enhances strength performance and reduces perceived exertion and muscle pain perception during resistance exercise
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DOI：
10.1080/17461391.2011.635811
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发表时间：
2013-07-01
影响因子：
3.2
通讯作者：
Smith, Mike
中科院分区：
文献类型：
--
作者：
Duncan, Michael J.;Stanley, Michelle;Smith, Mike
摄入咖啡因在提高有氧运动能力方面的功效是公认的。然而，尽管咖啡因可以提高抗阻运动表现的建议，研究是模棱两可的急性咖啡因摄入抗阻运动性能的影响。也有人认为，感觉到的消耗和疼痛感的减弱可能是由于咖啡因摄入导致的阻力运动表现的任何可能增强的解释。因此，本研究的目的是研究急性影响的咖啡因摄入重复失败，评级的自认为的努力（RPE）和肌肉疼痛的感觉，在阻力运动失败。11名经过抗阻训练的个体（9名男性，2名女性，平均年龄+/-SD = 26.4 +/-6.4岁）参加了这项双盲、随机交叉实验研究，他们在完成一轮抗阻运动前60分钟摄入含咖啡因（5 mg kg（-1））或安慰剂溶液。实验条件间隔至少48小时。阻力训练包括卧推、硬拉、卧倒和后蹲训练，强度为60%，最多重复1次。结果表明，参与者完成了显着更大的重复失败，无论运动，在咖啡因的存在下（p = 0.0001）。在咖啡因和安慰剂条件下，重复失败的平均+/-S. D分别为19.6 +/-3.7和18.5 +/-4.1。不同条件下的峰值心率或峰值血乳酸值无差异（均p> 0.05）。与安慰剂条件相比，咖啡因条件下的RPE显著较低（p = 0.03），并且与摄入的物质无关，与上身运动相比，下身运动期间的RPE显著较高（p = 0.0001）。对于肌肉疼痛感知，运动相互作用的显著条件（p = 0.027）表明，无论运动如何，咖啡因条件下的肌肉疼痛感知均较低。与咖啡因相比，硬拉和后蹲的疼痛感明显高于卧推。然而，安慰剂组，硬拉和后蹲的疼痛感明显高于仅俯卧行。因此，急性咖啡因摄入不仅增强了抵抗运动的失败表现，而且还减少了运动和肌肉疼痛的感觉。
The efficacy of caffeine ingestion in enhancing aerobic performance is well established. However, despite suggestions that caffeine may enhance resistance exercise performance, research is equivocal on the effect of acute caffeine ingestion on resistance exercise performance. It has also been suggested that dampened perception of perceived exertion and pain perception might be an explanation for any possible enhancement of resistance exercise performance due to caffeine ingestion. Therefore, the aim of this study was to examine the acute effect of caffeine ingestion on repetitions to failure, rating of perceived exertion (RPE) and muscle pain perception during resistance exercise to failure. Eleven resistance trained individuals (9 males, 2 females, mean age +/- SD=26.4 +/- 6.4 years), took part in this double-blind, randomised cross-over experimental study whereby they ingested a caffeinated (5 mg kg(-1)) or placebo solution 60 minutes before completing a bout of resistance exercise. Experimental conditions were separated by at least 48 hours. Resistance exercise sessions consisted of bench press, deadlift, prone row and back squat exercise to failure at an intensity of 60% 1 repetition maximum. Results indicated that participants completed significantly greater repetitions to failure, irrespective of exercise, in the presence of caffeine (p=0.0001). Mean +/- S.D of repetitions to failure was 19.6 +/- 3.7 and 18.5 +/- 4.1 in caffeine and placebo conditions, respectively. There were no differences in peak heart rate or peak blood lactate values across conditions (both p >0.05). RPE was significantly lower in the caffeine compared to the placebo condition (p=0.03) and was significantly higher during lower body exercises compared to upper body exercises irrespective of substance ingested (p=0.0001). For muscle pain perception, a significant condition by exercise interaction (p=0.027) revealed that muscle pain perception was lower in the caffeine condition, irrespective of exercise. With caffeine, pain perception was significantly higher in the deadlift and back squat compared to the bench press. However, with placebo, pain perception was significantly higher for the deadlift and back squat compared to the prone row only. Therefore, acute caffeine ingestion not only enhances resistance exercise performance to failure but also reduces perception of exertion and muscle pain.