Acute Caffeine Intake Effects in Strength and Endurance Performance in Resistance-training-naïve Older Adults
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 36
- 试验地点
- 1
- 主要终点
- Mean velocity at different %1RM
研究概览
简要总结
Evidence regarding the ergogenic effects of caffeine is well-established in young adults, but evidence in older adults remains scarce, particularly during dynamic resistance exercise. Therefore, this study investigated the effects of acute caffeine ingestion on upper- and lower-body muscular strength and endurance performance, as well as the influence of sex and CYP1A2 genotype, in healthy resistance training-naïve older adults.
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
- Double (Participant, Investigator)
盲法说明
Statisian
入排标准
- 年龄范围
- 55 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age ≥ 55 years.
- •Body mass index (BMI) lower than 25 kg/m².
- •Physically active subjects (≥150 min/week of moderate exercise).
- •Healthy men and women without neurological, cardiometabolic, immunological, or physical conditions that prevent them from performing physical exercise.
- •Participants capable of performing the tests.
排除标准
- •History of neuromuscular, cardiac, or diseases that could affect liver or muscle metabolism.
- •Use of drugs or other stimulants that interfere with caffeine intake and intestinal absorption during the tests and study.
- •Body mass index (BMI) ≥ 25 kg/m².
- •Having undergone prolonged periods of forced physical inactivity during the 6 months prior to the study. • Performing strenuous exercise within 48 hours prior to the tests.
- •Failing to replicate the same food intake on the two experimental days.
- •Consuming caffeine after 6 PM on the day prior to training or testing.
研究组 & 干预措施
Caffeine
Acute caffeine intake (3 mg/kg)
干预措施: Caffeine (Dietary Supplement)
Placebo
Placebo (3 mg/kg maltodextrin)
干预措施: Placebo (Dietary Supplement)
结局指标
主要结局
Mean velocity at different %1RM
时间窗: hrough study completion, an average of 3 weeks
Mean velocity at different %1RM
Number of repetitions performed in 1 set at 65%1RM until task failure
时间窗: Through study completion, an average of 3 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 3 weeks
In bench press and back squat exercises
handgrip and isometric mid-thigh pull tests
时间窗: Through study completion, an average of 3 week
N generated
Mean velocity at different %1RM
时间窗: Through study completion, an average of 3 weeks
Mean velocity at different %1RM
Number of repetitions performed during 1 set at 65%1RM until task failure
时间窗: Through study completion, an average of 3 weeks
In bench press and back squat exercises
次要结局
- cyp1a2 polymorphism(Before the beginning of the trial)
- Mood state (tension, depression, anger, vigor, fatigue and confusion)(Through study completion, an average of 3 weeks)
- Adverse effects(Through study completion, an average of 3 weeks)
- CYP1A2 polymorphism(Before the beginning of the trial)
研究者
Alberto Pérez-López
Principal Investigator
University of Alcala