Effects of a Multi-ingredient Pre-workout Supplement Versus Caffeine on Energy Expenditure and Feelings of Fatigue During Low-intensity Treadmill Exercise in College-aged Males.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 12
- 试验地点
- 2
- 主要终点
- Energy expenditure
研究概览
简要总结
The primary purpose of this study was to examine the acute effects of a multi-ingredient pre-workout supplement versus an ergogenic dose of caffeine (6 mg/kg) on energy expenditure during low-intensity exercise. The effects of these substances on substrate utilization, gas exchange, and psychological factors were also investigated. Twelve males (mean ± SD: age = 22.8 ± 2.4 years) completed three bouts of 60-min of treadmill exercise at 4.8-6.4 km/hr on separate days after consuming a pre-workout supplement, 6 mg/kg of caffeine, or placebo in a randomized fashion. The pre-workout and caffeine supplements resulted in significantly greater energy expenditure (p < 0.001, p = 0.006, respectively), VO2 (p < 0.001, p = 0.007, respectively), VCO2 (p = 0.006, p = 0.049, respectively), and VE (p < 0.001, p = 0.007, respectively), but not rates of fat or carbohydrate oxidation or respiratory exchange ratio compared to placebo (collapsed across condition). In addition, the pre-workout supplement increased feelings of alertness (p = 0.015) and focus (p = 0.005) 30-minutes post-ingestion and decreased feelings of fatigue (p = 0.014) during exercise compared to placebo (collapsed across condition). Thus, the pre-workout supplement increased energy expenditure and measures of gas exchange to the same extent as 6 mg/kg of caffeine with concomitant increased feelings of alertness and focus and decreased feelings of fatigue.
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)
入排标准
- 年龄范围
- 19 Years 至 29 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- 未提供
排除标准
- •history of medical or surgical events, including cardiovascular disease, metabolic, renal, hepatic, or musculoskeletal disorders;
- •use of any medications
- •use of nutritional supplements
- •habitual use of caffeine (≥1 caffeinated beverage per day)
- •participation in another clinical trial or investigation of another investigational product within 30 days prior to screening/enrollment.
结局指标
主要结局
Energy expenditure
时间窗: Measured continuously during 60 minutes of exercise for all three supplement conditions
Measurement of caloric expenditure via gas exchange
次要结局
- Oxygen consumption(Measured continuously during 60 minutes of exercise for all three supplement conditions)
- Minute ventilation(Measured continuously during 60 minutes of exercise for all three supplement conditions)
- Rate of carbohydrate oxidation(Measured continuously during 60 minutes of exercise for all three supplement conditions)
- Feelings of focus(Baseline, 30-minutes post-ingestion of supplement, and at the 30-minute time point of exercise for all three supplement conditions)
- Rate of fat oxidation(Measured continuously during 60 minutes of exercise for all three supplement conditions)
- Carbon dioxide production(Measured continuously during 60 minutes of exercise for all three supplement conditions)
- Feelings of fatigue(Baseline, 30-minutes post-ingestion of supplement, and at the 30-minute time point of exercise for all three supplement conditions)
- Feelings of energy(Baseline, 30-minutes post-ingestion of supplement, and at the 30-minute time point of exercise for all three supplement conditions)
- Feelings of alertness(Baseline, 30-minutes post-ingestion of supplement, and at the 30-minute time point of exercise for all three supplement conditions)
研究者
Clayton Camic
Associate Professor
Northern Illinois University