Acute Effects of Beetroot Juice Supplements on Lower-limb Strength and Muscular Endurance in Physically Active Women: Double-blind Crossover Randomized Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 11
- 试验地点
- 12
- 主要终点
- Change of height reached in jump
研究概览
简要总结
This study aims to evaluate the effects of beetroot juice supplements on lower-limb strength and muscular endurance in physically active women, due to the presence of NO3- in beetroot juice.
详细描述
Beetroot juice (BJR) is used as an ergogenic aid, but no study has analyzed its' effects on explosive force production in physically active women. It has been proposed that females could blunt reduction of NO2- to NO based on a higher oxidative skeletal muscle phenotype than males. However, it has been observed a higher increase on plasma NO2- levels after supplementation compared to and a greater enhancement on muscle contractile function.
Based on the absence of any study that has analyzed the effect of NO3- supplements on jump ability and power production on weightlifting on female population; the purpose of this study will be to investigate the possible ergogenic effect of BJR on physically active women on explosive force production and muscular endurance in a lower-limb body weightlifting protocol, due to the presence of NO3- in BJR and its effects.
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
The order in which the participants will consume one supplement or another will be assigned randomly and double blind by an external collaborator to the research team, who will be responsible for coding the bottles.
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Physically active females with 18-30 years of age
- •More than 6 months on RT training programs
- •Be familiarized with back squat, leg press and leg extension exercises
- •Not consuming any type of nutritional supplement or anabolic substances in the previous three months or during the study
- •Not suffering from a musculoskeletal injury that could interfere with the exercise protocol during the investigation
排除标准
- 未提供
结局指标
主要结局
Change of height reached in jump
时间窗: Week 1, 2 and 3.
Evaluated through CMJ (Counter movement jump) test with a recovery period of 45 seconds between jumps.
次要结局
- Rating of perceived exertion (RPE).(Visit 1 (week 1), 2 (week 2) and 3 (week 3).)
- Movement velocity(Visit 1 (week 1), 2 (week 2) and 3 (week 3).)
- Power on back squat(Visit 1 (week 1), 2 (week 2) and 3 (week 3).)
- Muscular endurance test(Visit 1 (week 1), 2 (week 2) and 3 (week 3).)