Department of Human Nutrition, Foods, and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
J Strength Cond Res. 2012 Feb;26(2):319-26. doi: 10.1519/JSC.0b013e3182429ae5.
Performance in many team sports is partially dependent on the ability to perform repeatedly at high intensity. Previous research demonstrates that capsaicin (CAP) has physiological and metabolic effects that could influence exercise performance and inflammation. The purpose of this study was to investigate the influence of CAP on performance of and the interleukin-6 (IL-6) response to repeated sprints. Nineteen healthy male experienced athletes, age 18-30 years, participated in a placebo (PCB)-controlled, crossover study. During 1 trial, they consumed 3 g·d(-1) cayenne (25.8 mg·d(-1) CAP) and the other a PCB for days. Directly after the supplementation period, they completed a repeated sprint test (RST) consisting of 15 30-m maximal effort sprints on 35-second intervals with sprint times measured via an electronic dual-beam timing system. Fasted blood draws for IL-6 were taken at baseline before supplementation, 45 minute pre-RST, and immediately post-RST. Rate of perceived exertion (RPE), muscle soreness (MS), and gastrointestinal distress (GD) for 5 symptom subscales were measured 1-minute pretest, during, posttest, and 1-minute posttest. The MS was additionally measured for 3-day posttest. Relative to the PCB, CAP significantly increased the sum of ratings of GD symptoms by 6.3-fold. There was no difference between treatments in fastest or mean sprint time, fatigue, IL-6 response, RPE, or MS. In summary, CAP did not influence repeated sprint performance or the IL-6 response but caused substantial GD. The CAP is not recommended for athletes involved in repeated sprinting.
在许多团队运动中，表现部分取决于反复高强度运动的能力。先前的研究表明，辣椒素 (CAP) 具有生理和代谢作用，可能会影响运动表现和炎症。本研究旨在探讨 CAP 对重复冲刺表现和白细胞介素-6 (IL-6) 反应的影响。19 名健康男性经验丰富的运动员，年龄 18-30 岁，参加了安慰剂 (PCB)-对照、交叉研究。在一次试验中，他们连续几天每天摄入 3 克·天(-1) 辣椒 (25.8 毫克·天(-1) CAP) 和另一种 PCB。在补充期结束后，他们立即完成了一项重复冲刺测试 (RST)，该测试由 15 次 30 米最大努力冲刺组成，间隔 35 秒，冲刺时间通过电子双光束计时系统测量。在补充前、RST 前 45 分钟和 RST 后立即采集空腹血样，用于测量 IL-6。在 1 分钟前测、运动期间、后测和后测 1 分钟时，分别测量 5 个症状子量表的 RPE、肌肉酸痛 (MS) 和胃肠道不适 (GD)。MS 还在 3 天后测进行了测量。与 PCB 相比，CAP 显著增加了 GD 症状评分的总和 6.3 倍。两种处理方法在最快或平均冲刺时间、疲劳、IL-6 反应、RPE 或 MS 方面没有差异。总之，CAP 没有影响重复冲刺表现或 IL-6 反应，但会引起明显的 GD。不建议从事重复冲刺的运动员使用 CAP。
