How Does Altering the Timing of Pre-exercise Low-dose Caffeine Ingestion Affect Endurance Exercise Performance
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 14
- 试验地点
- 2
- 主要终点
- Work done in kilojoules (kJ) during a 15 minute time trial on a cycle ergometer
研究概览
简要总结
Investigate how manipulating the time between caffeine ingestion and exercise may alter exercise performance and cognition
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •vo2max > 55 ml/kg/min
- •females on contraceptive pill
排除标准
- •recent skeletal muscle injury
- •cardiovascular injury
- •metabolic disease
研究组 & 干预措施
Caffeine -60
Caffeine at 60 minutes prior to time trial
干预措施: Caffeine powder -60 (Other)
Caffeine -60
Caffeine at 60 minutes prior to time trial
干预措施: Placebo powder -30 (Other)
Caffeine -60
Caffeine at 60 minutes prior to time trial
干预措施: Placebo powder 0 (Other)
Caffeine -30
Caffeine at 30 minutes prior to time trial
干预措施: Placebo powder 0 (Other)
Caffeine -30
Caffeine at 30 minutes prior to time trial
干预措施: Caffeine powder -30 (Other)
Caffeine -30
Caffeine at 30 minutes prior to time trial
干预措施: Placebo powder -60 (Other)
Caffeine 0
Caffeine immediately prior to time trial
干预措施: Caffeine powder 0 (Other)
Caffeine 0
Caffeine immediately prior to time trial
干预措施: Placebo powder -60 (Other)
Caffeine 0
Caffeine immediately prior to time trial
干预措施: Placebo powder -30 (Other)
Placebo
Placebo drink at all time points
干预措施: Placebo powder -60 (Other)
Placebo
Placebo drink at all time points
干预措施: Placebo powder -30 (Other)
Placebo
Placebo drink at all time points
干预措施: Placebo powder 0 (Other)
结局指标
主要结局
Work done in kilojoules (kJ) during a 15 minute time trial on a cycle ergometer
时间窗: 15 minutes
次要结局
- Collection of saliva for genotyping of CYP1A2(30 mintes)
- Change in plasma caffeine concentration and metabolites(2 hours 45 minutes)
- Change in cognitive function measured using stroop test(2 hours 45 minutes)
- Whole body fuel substrate utilisation measured using indirect calorimetry(10 minutes)