Effects of Herbal Supplements on Endurance Exercise Performance
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 13
- 试验地点
- 2
- 主要终点
- VO2 max
研究概览
简要总结
Cordyceps and Rhodiola are two common herbal supplements marketed and consumed as adaptogens to athletes with regard to enhanced performance. The effects of these supplements has been well studied in animals but whether or not the same effects translate to humans is still unclear. Thus, the primary purpose of this study is to determine whether combined supplementation of Rhodiola and Cordyceps, compared to Rhodiola alone and placebo, will demonstrate a greater improvement in oxygen consumption (ie. VO2 max).
详细描述
Herbal supplements are consumed worldwide with surveys approximating five billion dollars spent annually by consumers in the United States alone. Herbal supplements, such as Rhodiola and Cordyceps, both of which are considered to be adaptogens, remain popular among athletes. These adaptogens act as antioxidants, which have been speculated to confer endurance performance benefits by delaying muscle fatigue via the attenuation of muscle damage accumulation and its related by-products during prolonged or exhaustive exercise. Nevertheless, previous research investigating the individual effects of Rhodiola and Cordyceps on aerobic training performance remain equivocal. Moreover, literature elucidating the potential additive effects of Rhodiola and Cordyceps in human subjects are scarce. Therefore, the purpose of the present study is to determine the acute, additive influence of oral Rhodiola and Cordyceps supplementation on VO2 max, with secondary variables of interest being plasma glucose and lactate concentration, and measures of gastrointestinal distress.
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 30 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Body Mass Index between 18.5 and 35 kg/m^2
- •Non-smoking (assessed by Health History Questionnaire)
- •English-speaking
- •Regular participation in physical activity (>4 hours per week)
排除标准
- •Medical conditions that prohibit physical activity (assessed by Health History Questionnaire)
- •Pregnant women or women expecting/trying to become pregnant
- •BMI greater than or equal to 35 kg/m^2
- •Current smoker (assessed by Health History Questionnaire)
结局指标
主要结局
VO2 max
时间窗: 90 minutes after baseline
Maximum oxygen consumption using the Bruce Protocol
次要结局
- Gastrointestinal symptoms questionnaire(Baseline, 90 minutes, 110 minutes)
- Blood glucose(Baseline, 90 minutes, 110 minutes)
- Blood lactate(Baseline, 90 minutes, 110 minutes)
研究者
Todd Hagobian
Principal Investigator
California Polytechnic State University-San Luis Obispo