Caffeine Mouth Rinsing at Different Doses Does Not Enhance Anaerobic Sprint Performance in Female Team-Sport Athletes: A Randomized, Double-Blind, Placebo-Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 13
- 试验地点
- 1
- 主要终点
- Running-based anaerobic sprint test (RAST protocol)
研究概览
简要总结
Objective:
To evaluate the effects of different caffeine mouth rinse concentrations (1%, 2%, and 3%) on Running Anaerobic Sprint Test (RAST) performance in female team-sport athletes.
Main Questions:
- Do caffeine mouth rinses improve RAST performance in female team-sport athletes?
- Do different caffeine mouth rinse concentrations affect ratings of perceived exertion (RPE)?
Method:
Thirteen trained female football and handball players (23.0 ± 4.5 years) completed four randomized, double-blind, crossover conditions (1%, 2%, and 3% caffeine mouth rinses, and placebo). Each trial involved six 35 m sprints separated by 10 s of rest. RPE was recorded immediately after each session.
详细描述
Objective:
To evaluate the acute effects of different caffeine mouth rinse concentrations (1%, 2%, and 3%) on anaerobic sprint performance and perceived exertion in trained female team-sport athletes. The study sought to determine whether this non-ingestive ergogenic strategy could enhance high-intensity running performance and reduce effort perception.
Main Questions:
- Do different caffeine mouth rinse concentrations improve Running Anaerobic Sprint Test (RAST) performance in trained female team-sport athletes?
- Do caffeine mouth rinses at varying concentrations influence ratings of perceived exertion (RPE) compared with placebo?
Is there an optimal caffeine concentration that balances potential performance benefits with reduced perceived exertion?
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Female team sports athletes aged between 18 and 35 years.
- •Currently engaged in team sports.
- •Non-smoker.
排除标准
- •Participants were excluded if they met any of the following conditions.
- •Presence of a musculoskeletal injury within the six months prior to the study.
- •Current smoker.
- •Use of nutritional supplements or ergogenic aids that could influence sprint running performance (e.g., beta-alanine, creatine).
- •Use of oral contraceptives.
- •Known allergy to caffeine.
- •Failure to meet the training requirement of at least six hours of team-based practice, a minimum of three days per week, over the past year.
结局指标
主要结局
Running-based anaerobic sprint test (RAST protocol)
时间窗: 2-week
The RAST was comprised of six 35 m sprints at maximum effort, each of which was followed by a 10 s passive rest period (including deceleration phase). Participants rinsed the solution in the final 5 s of the rest period accompanied by the counting of the tester, and then sprint back to the first timing gate with "GO" command. This was repeated until six sprints had been accomplished. Participants began to sprint running for a maximum of one step before the timing gate and were instructed not to decelerate before passing through the timing gate. Using a system of photocells (Newtest Powertimer 300-series, Newtest Oy, Tyrnävä, Finland), which was placed at the beginning and the end of the 35 m, the duration of each 35 m sprint running time was recorded. Using time of each sprint attempt, 1-) fastest sprint time, 2-) mean sprint time, and 3-) fatigue index were recorded
次要结局
- Rating of perceived exertion (RPE)(2-weeks)