No significant effect of caffeine on five kilometer running performance after muscle damage.

IF 2 4区 医学 Q3 NUTRITION & DIETETICS International Journal for Vitamin and Nutrition Research Pub Date : 2022-10-01 Epub Date: 2020-11-04 DOI:10.1024/0300-9831/a000683
Ali M Al-Nawaiseh, Robert C Pritchett, Kelly Kerr Pritchett, Mo'ath F Bataineh, Akef M Taifour, David Bellar, Makenzie A Schoeff, Brian Fox, Amy Judge, Lawrence W Judge
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引用次数: 1

Abstract

Caffeine has documented hypoalgesic effects during exercise. However, there is a lack of research focusing on caffeine's potential analgesic effects to ameliorate delayed onset muscle soreness. A placebo controlled randomized cross-over trial was carried out to determine if 5 mg/kg of body weight (mg/kgBW) of caffeine attenuates muscle pain and improves 5 k running performance following delayed onset muscle soreness. Prior to participating, eleven runners (9 male; 2 female; age, 24.5 ± 6.3 years; height, 173.6 ± 7.8 cm; body mass, 66.3 ± 7.5 kg; BMI, 23.18 kg/m2 ± 1.6; VO2max 61.0 ± 6.1 ml/kg/min-1), were asked to discontinue supplement use for 72 hours and abstain from caffeine consumption for 48 hours. Participants performed a 30-minute downhill run on a treadmill set at -10% grade at 70% VO2max to induce delayed onset of muscle soreness. Participants then returned 48 hours after to complete a 5 k time trial run where they consumed either 5 mg/kgBW of caffeine or a placebo. Rate of perceived exertion and heart rate were taken every two minutes during the trial. There was no detectable statistical difference between 5 k performance between caffeine (1074.9 ± 119.7 sec) or placebo (1053.8 ± 86.8 sec) (p = .41). Algometer readings were similar between both treatments for muscle soreness in the rectus femoris (p = .791) and the vastus medialis oblique (p = .371). Muscle soreness ratings were found to be greater in the caffeine condition compared to the placebo condition (p = .030). There was no effect of treatment on rating of perceived exertion between conditions (p = .574). The present study suggests that caffeine is not effective at reducing muscle soreness, rating of perceived exertion, or improving running performance in a time trial in the presence of muscle soreness.

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在肌肉损伤后,咖啡因对5公里跑成绩没有显著影响。
咖啡因在运动中有镇痛作用。然而,缺乏关于咖啡因在改善迟发性肌肉酸痛方面的潜在镇痛作用的研究。进行了一项安慰剂对照随机交叉试验,以确定5mg /kg体重(mg/kgBW)的咖啡因是否能减轻肌肉疼痛并改善延迟性肌肉酸痛后的5公里跑步表现。参赛前,11名选手(男9名;2女;年龄:24.5±6.3岁;高度:173.6±7.8 cm;体重:66.3±7.5 kg;BMI, 23.18 kg/m2±1.6;VO2max(61.0±6.1 ml/kg/min-1),要求停止服用补充剂72小时,并停止摄入咖啡因48小时。参与者在-10%的跑步机上以70%的最大摄氧量进行30分钟的下坡跑,以诱导延迟发作的肌肉酸痛。然后参与者在48小时后返回,完成5公里的计时跑,他们消耗5毫克/公斤的咖啡因或安慰剂。试验期间每两分钟测量一次感知用力率和心率。咖啡因(1074.9±119.7秒)和安慰剂(1053.8±86.8秒)在5k成绩上无统计学差异(p = 0.41)。两种治疗方法对股直肌(p = .791)和股内侧斜肌(p = .371)肌肉酸痛的测量读数相似。与安慰剂组相比,咖啡因组的肌肉酸痛评分更高(p = 0.030)。在两种情况下,治疗对感知运动的评分没有影响(p = .574)。目前的研究表明,咖啡因不能有效地减轻肌肉酸痛,感知运动的等级,或者在肌肉酸痛的情况下提高计时赛中的跑步表现。
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来源期刊
CiteScore
5.00
自引率
4.30%
发文量
53
审稿时长
>12 weeks
期刊介绍: Since 1930 this journal has provided an important international forum for scientific advances in the study of nutrition and vitamins. Widely read by academicians as well as scientists working in major governmental and corporate laboratories throughout the world, this publication presents work dealing with basic as well as applied topics in the field of micronutrients, macronutrients, and non-nutrients such as secondary plant compounds. The editorial and advisory boards include many of the leading persons currently working in this area. The journal is of particular interest to: - Nutritionists - Vitaminologists - Biochemists - Physicians - Engineers of human and animal nutrition - Food scientists
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