Acute Effects of Tribulus Terrestris Supplementation on Anaerobic Performance and Sprint Times in Combat Sport Athletes: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 28
- 试验地点
- 1
- 主要终点
- Peak Power Output (W, W/kg) - Wingate Test
研究概览
简要总结
This study aims to investigate the acute effects of Tribulus terrestris supplementation on anaerobic performance and sprint times in trained male combat sport athletes. A total of 28 athletes from kickboxing, Muay Thai, and taekwondo disciplines will participate in a randomized, double-blind, placebo-controlled, crossover trial.
Participants will ingest either a single oral dose of 625 mg Tribulus terrestris (40% saponins) or a placebo 60 minutes before performing performance tests. The performance assessments will include a 30-second Wingate anaerobic cycling test and 20 m and 100 m sprint tests using photocell timing gates. After a wash-out period, participants will cross over to the alternate condition.
The primary outcomes are peak power and mean power from the Wingate test and sprint times over 20 m and 100 m.
详细描述
This trial is designed to evaluate the acute ergogenic potential of Tribulus terrestris supplementation in combat sport athletes. Tribulus terrestris has traditionally been marketed as a natural testosterone booster and performance enhancer, yet its acute effects on high-intensity exercise performance remain unclear.
Design and Methods
Participants: 28 trained male athletes (Kickboxing n=12, Muay Thai n=10, Taekwondo n=6), aged 18-30 years, with at least 2 years of competitive training experience.
Design: Randomized, double-blind, placebo-controlled, crossover.
Intervention: A single dose of 625 mg Tribulus terrestris (40% saponins) or matched placebo (cellulose). Supplements will be ingested 60 minutes before testing.
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
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
盲法说明
Participants, investigators, care providers, and outcome assessors were blinded to group allocation. Supplements were prepared in identical capsules to ensure blinding integrity.
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Male athletes aged 18-30 years
- •Engaged in combat sports (kickboxing, Muay Thai, or taekwondo)
- •Minimum 2 years of continuous training experience
- •Training at least 4 sessions per week
- •Free from injury or illness at the time of testing
- •Provided written informed consent
排除标准
- •Use of ergogenic supplements, anabolic steroids, or hormonal treatments within the past 3 months
- •Consumption of caffeine, alcohol, or performance-enhancing substances within 24 hours before testing
- •Current musculoskeletal injury or medical condition that may limit performance
- •Any chronic disease or contraindication to high-intensity exercise
研究组 & 干预措施
Tribulus Terrestris
A single oral dose of 625 mg Tribulus terrestris extract (40% saponins) given 60 minutes before exercise testing.
干预措施: Tribulus terrestris extract (Dietary Supplement)
Placebo
Visually identical cellulose capsule given 60 minutes before exercise testing.
干预措施: Cellulose capsule (placebo) (Other)
结局指标
主要结局
Peak Power Output (W, W/kg) - Wingate Test
时间窗: Measured once, 60 minutes after supplementation, during the Wingate test session (single-day assessment).
Maximum anaerobic power generated during the 30-second Wingate cycling test performed against a resistance equal to 10% of body mass.
次要结局
- Mean Power Output (W, W/kg) - Wingate Test(Measured once, 60 minutes after supplementation, during the Wingate test session (single-day assessment).)
研究者
Salih ÇABUK
Research Assistant
Erzurum Technical University