Reproducibility of the Acute Effect of Caffeine on Energy Metabolism and Muscular Strength, Power and Endurance Performance
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 48
- 试验地点
- 2
- 主要终点
- Mean velocity at different %1RM
研究概览
简要总结
Introduction: Various studies have evaluated and verified the ergogenic effect of acute caffeine intake on sports performance, specifically on strength and power performance. However, all experimental investigations designed so far have been based on the comparison of the "caffeine" and "placebo" conditions in a single trial, not considering the reproducibility and variability of caffeine in multiple trials.
Objectives: The present study aims to evaluate the reproducibility and replicability of the acute effect of caffeine intake on energy metabolism and the muscular production of force, power and endurance, according to sex (men vs women) and type of exercise ( bench press vs squat).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Other
- 盲法
- Double (Participant, Investigator)
盲法说明
Statistician
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age between ≥ 18 and ≤ 35 years.
- •Body Mass Index (BMI) < 25 kg/m².
- •Resistance-trained individuals (> 2 years of structured trained).
- •Healthy men and women without neurological, cardiometabolic, immunological, or physical conditions that prevent them from exercising.
- •Participants must be able to perform the tests described in the following section.
排除标准
- •History of neuromuscular diseases, heart diseases, or diseases that may affect liver or muscle metabolism.
- •Use of drugs, other stimulants or sport supplements that interfere with the the study dietary supplement.
- •Sedentary habits (<150 min/week of moderate exercise).
- •Having undergone prolonged periods of forced physical inactivity during the 6 months prior to the study.
- •Performing strenuous exercise during the 48 hours prior to the tests.
- •Failure to replicate the same food intake on the two days of the experiments.
- •Consuming caffeine or any other stimulant after 6 pm the day before the training or tests, to avoid headaches, discomfort, or lethargy among regular caffeine consumers.
结局指标
主要结局
Mean velocity at different %1RM
时间窗: Through study completion, an average of 4 weeks
Measuring bar mean velocity desplacement during bench press and back squat exercises.
Peak velocity at different %1RM
时间窗: Through study completion, an average of 4 weeks
Measuring bar peak velocity and time to reach peak velocity of bar desplacement during bench press and back squat exercises.
Mean power output at different %1RM
时间窗: Through study completion, an average of 4 weeks
Measuring during bench press and back squat exercises.
Number of repetitions performed in 1 set at 65%1RM until task failure
时间窗: Through study completion, an average of 4 weeks
In bench press and back squat exercises
Bar velocity deplacement performed in 1 set at 65%1RM until task failure
时间窗: Through study completion, an average of 4 weeks
In bench press and back squat exercises
Peak power output and time to reach peak power output at different %1RM
时间窗: Through study completion, an average of 4 weeks
Measuring during bench press and back squat exercises.
Power output generated in 1 set at 65%1RM until task failure
时间窗: Through study completion, an average of 4 weeks
In bench press and back squat exercise
Resting Metabolic Rate (RMR)
时间窗: Through study completion, an average of 4 weeks
Kcal at rest measuring (RMR) using a metabolic chart.
Maximal Fat Oxidation Rate (MFO)
时间窗: Through study completion, an average of 4 weeks
g/min (MFO) using a metabolic chart.
次要结局
- Physical activity (METs-min/wk)(Through study completion, an average of 4 weeks)
- Dietary (g/kg of macronutrients)(Through study completion, an average of 4 weeks)
- Mood state(Through study completion, an average of 4 weeks)
- Adverse effects(Through study completion, an average of 4 weeks)
- Fat mass(Through study completion, an average of 4 weeks)
- Fat-free mass(Through study completion, an average of 4 weeks)
研究者
Alberto Pérez-López
Principal Investigator
University of Alcala