Effect of Beetroot Juice Supplements on Lower-limb Strength in Females
- Conditions
- Muscular Endurance
- Interventions
- Dietary Supplement: Beetroot juiceOther: Capri-Sun
- Registration Number
- NCT04987619
- Lead Sponsor
- Maim贸nides Biomedical Research Institute of C贸rdoba
- Brief Summary
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.
- Detailed Description
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.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Female
- Target Recruitment
- 11
- 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
- None
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Arm && Interventions
Group Intervention Description BJR Beetroot juice 70 mL of beetroot juice (BEET It Sport庐; James White Drinks Ltd., Ipswich, UK) PLA Capri-Sun 70 mL of blackcurrant beverage Capri-Sun.
- Primary Outcome Measures
Name Time Method Change of height reached in jump Week 1, 2 and 3. Evaluated through CMJ (Counter movement jump) test with a recovery period of 45 seconds between jumps.
- Secondary Outcome Measures
Name Time Method Rating of perceived exertion (RPE). Visit 1 (week 1), 2 (week 2) and 3 (week 3). Immediately at the end of the muscular endurance test, participants will be instructed to report their RPE using a scale 1-10 (worse to better outcome).
Movement velocity Visit 1 (week 1), 2 (week 2) and 3 (week 3). Evaluated at 50% and 75% repetition maximum (RM)
Power on back squat Visit 1 (week 1), 2 (week 2) and 3 (week 3). Evaluated at 50% and 75% repetition maximum (RM)
Muscular endurance test Visit 1 (week 1), 2 (week 2) and 3 (week 3). The test consists of three exercises: back squat, leg press and leg extension. Three series will be performed until concentric failure at 75% RM, three minutes of rest between each series.
Trial Locations
- Locations (6)
Departamento de Motricidad Humana y Rendimiento Deportivo, Universidad de Sevilla
馃嚜馃嚫Sevilla, Spain
Metabolism and Investigation Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC),Reina Sofia University Hospital, University of Cordoba
馃嚜馃嚫C贸rdoba, Spain
Department of Food Science and Technology, Rabanales University Campus, University of Cordoba
馃嚜馃嚫C贸rdoba, Spain
Department of Nursing Pharmacology and Physiotherapy, Faculty of Medicine and Nursing, University of C贸rdoba
馃嚜馃嚫C贸rdoba, Spain
Studies Research Group in Neuromuscular Responses (GEPREN), University of Lavras
馃嚙馃嚪Lavras, Brazil
Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba
馃嚜馃嚫C贸rdoba, Spain