Exercise Physiology Group, School of Physiotherapy, Faculty of Health Sciences, Universidad Francisco de Vitoria, Madrid, Spain.
Centre for Translational Research in Physiotherapy, Department of Pathology and Surgery, Universidad Miguel Hernández, San Juan, Spain.
Eur J Nutr. 2021 Dec;60(8):4531-4540. doi: 10.1007/s00394-021-02617-w. Epub 2021 Jun 16.
To date, no previous investigation has studied the effect of acute caffeine ingestion on futsal performance during futsal-specific testing and during a simulated match. Therefore, the aim of this investigation was to establish the effects of acute caffeine intake on futsal-specific tests and match-play running performance in male futsal players.
Sixteen high-performance futsal players participated in a randomized, crossover, placebo-controlled and double-blind experiment. Each player completed two identical trials after ingesting either caffeine (3 mg/kg) or a placebo (cellulose). The trials consisted of a battery of futsal-specific tests (countermovement jump, 20-m sprint test, and a futsal kicking velocity and accuracy test) followed by a simulated futsal match (2 halves of 7.5 min). During the match, players' running performance was assessed with local positioning system devices.
In comparison to the placebo, caffeine ingestion increased jump height by 2.8% (p = 0.048; ES = 0.29) and reduced the time to complete the 20-m sprint test by -2.2% (p = 0.044; ES = - 0.54). Additionally, acute caffeine intake improved the distance covered at above 14.4 km/h by 19.6% (p = 0.021; ES = 0.58), the number of body impacts by 8.1% (p = 0.040; ES = 0.27) and the number of accelerations/decelerations by 4.2% (p = 0.044; ES = 0.57) during the simulated futsal match. However, no differences were reported in ball velocity or shooting accuracy in the futsal kicking test. There were no differences in the prevalence of side effects reported in the hours after the ingestion of the treatments.
Three mg/kg of caffeine enhanced several physical variables associated with futsal such as jump and sprint performance, and improved high-speed running and accelerations/decelerations during a simulated futsal match. Caffeine supplementation with a moderate dose can be considered as an effective ergogenic aid for futsal performance with low prevalence of side effects.
The study was registered in ClinicalTrials.gov with the following ID: NCT04852315. The study was retrospectively registered by 18 April 2020.
迄今为止，尚无研究探讨急性咖啡因摄入对五人制足球专项测试和模拟比赛中五人制足球表现的影响。因此，本研究旨在确定急性咖啡因摄入对男性五人制足球运动员五人制足球专项测试和比赛跑动表现的影响。
16 名高水平五人制足球运动员参与了一项随机、交叉、安慰剂对照和双盲实验。每名运动员在摄入咖啡因（3mg/kg）或安慰剂（纤维素）后完成两次相同的试验。试验包括一系列五人制足球专项测试（反跳测试、20 米冲刺测试和五人制足球踢速和准确性测试），然后是模拟五人制足球比赛（两个 7.5 分钟的半场）。在比赛中，运动员的跑动表现通过局部定位系统设备进行评估。
与安慰剂相比，咖啡因摄入使跳跃高度增加了 2.8%（p=0.048；ES=0.29），20 米冲刺测试用时减少了 2.2%（p=0.044；ES=-0.54）。此外，急性咖啡因摄入使 14.4km/h 以上跑动距离增加了 19.6%（p=0.021；ES=0.58），身体碰撞次数增加了 8.1%（p=0.040；ES=0.27），加减速次数增加了 4.2%（p=0.044；ES=0.57），在模拟五人制足球比赛中。然而，在五人制足球踢速测试中，球速或射门准确性没有差异。在摄入治疗后的几个小时内，报告的副作用发生率没有差异。
3mg/kg 的咖啡因增强了与五人制足球相关的几个身体变量，如跳跃和冲刺表现，并在模拟五人制足球比赛中提高了高速跑动和加减速能力。中等剂量的咖啡因补充可以被认为是一种有效的五人制足球表现的促进剂，副作用发生率低。
该研究在 ClinicalTrials.gov 注册，注册号为 NCT04852315。该研究于 2020 年 4 月 18 日进行了回顾性注册。
