Exercise Physiology Laboratory, Camilo José Cela University, C/Castillo de Alarcon, 49. Villafranca del Castillo, 28692, Madrid, Spain.
Amino Acids. 2014 May;46(5):1385-92. doi: 10.1007/s00726-014-1709-z. Epub 2014 Mar 11.
There is little information about the effects of caffeine intake on female team-sport performance. The aim of this study was to investigate the effectiveness of a caffeine-containing energy drink to improve physical performance in female soccer players during a simulated game. A double-blind, placebo controlled and randomized experimental design was used in this investigation. In two different sessions, 18 women soccer players ingested 3 mg of caffeine/kg in the form of an energy drink or an identical drink with no caffeine content (placebo). After 60 min, they performed a countermovement jump (CMJ) and a 7 × 30 m sprint test followed by a simulated soccer match (2 × 40 min). Individual running distance and speed were measured using GPS devices. In comparison to the placebo drink, the ingestion of the caffeinated energy drink increased the CMJ height (26.6 ± 4.0 vs 27.4 ± 3.8 cm; P < 0.05) and the average peak running speed during the sprint test (24.2 ± 1.6 vs 24.5 ± 1.7 km/h; P < 0.05). During the simulated match, the energy drink increased the total running distance (6,631 ± 1,618 vs 7,087 ± 1,501 m; P < 0.05), the number of sprints bouts (16 ± 9 vs 21 ± 13; P < 0.05) and the running distance covered at >18 km/h (161 ± 99 vs 216 ± 103 m; P < 0.05). The ingestion of the energy drink did not affect the prevalence of negative side effects after the game. An energy drink with a dose equivalent to 3 mg of caffeine/kg might be an effective ergogenic aid to improve physical performance in female soccer players.
关于咖啡因摄入对女子团队运动表现的影响，相关信息较少。本研究旨在探究含咖啡因的能量饮料对女子足球运动员模拟比赛中身体表现的影响。本研究采用双盲、安慰剂对照和随机实验设计。在两个不同的时段，18 名女子足球运动员分别以 3 毫克/公斤咖啡因的剂量摄入能量饮料或不含咖啡因的相同饮料（安慰剂）。60 分钟后，她们进行了一次反跳式纵跳测试（CMJ）和 7×30 米冲刺测试，随后进行了一场模拟足球比赛（2×40 分钟）。使用 GPS 设备测量个体跑动距离和速度。与安慰剂饮料相比，摄入含咖啡因的能量饮料增加了 CMJ 高度（26.6±4.0 对 27.4±3.8 厘米；P<0.05）和冲刺测试中的平均峰值跑动速度（24.2±1.6 对 24.5±1.7 公里/小时；P<0.05）。在模拟比赛中，能量饮料增加了总跑动距离（6631±1618 对 7087±1501 米；P<0.05）、冲刺次数（16±9 对 21±13；P<0.05）和超过 18 公里/小时的跑动距离（161±99 对 216±103 米；P<0.05）。饮用能量饮料后，比赛后出现不良反应的发生率没有变化。剂量相当于 3 毫克/公斤咖啡因的能量饮料可能是一种有效的促进体能的辅助手段，可提高女子足球运动员的身体表现。
