Sodium Bicarbonate Supplementation in Combat Sports Athletes
- Conditions
- SportSupplementation
- Interventions
- Dietary Supplement: Placebo treatmentDietary Supplement: Sodium bicarbonate supplementation
- Registration Number
- NCT03406065
- Lead Sponsor
- Poznan University of Life Sciences
- Brief Summary
The purpose of this study was to verify the effect of 10-day sodium bicarbonate (NaHCO3) and placebo (PLA) supplementation on physical and specific performance capacity, as well as concentrations of the selected biochemical blood markers in trained combat sports athletes, in a randomised, double-blind, placebo-controlled trial.
- Detailed Description
Sodium bicarbonate (NaHCO3) was proposed as an ergogenic agent, because it improves high-intensity and resistance exercise performance. Until now the major limitation to NaHCO3 supplementation has been the gastrointestinal (GI) side effects. Therefore, this study aims to examine the effect of chronic, progressive-dose NaHCO3 ingestion on physical capacity and specific performance capacity, and concentrations of the selected biochemical blood markers in trained combat sports athletes, in a randomised, double-blind, placebo-controlled trial.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 64
- written informed consent from all participants before the study (included aslo informed consents to the participation in the study of athletes under the age of 18 obtained from their parents)
- a current medical clearance to practice sports,
- training experience: at least 4 years (of combat sport training),
- minimum of 4 workout sessions (combat sport) a week,
- current injury,
- any health-related contraindication,
- declared general feeling of being unwell,
- unwilling to follow the study protocol.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Placebo treatment Placebo treatment Group taking oral supplementation with placebo (maltodextrin with NaCl) in a similar tablet form prepared by the same producer as NaHCO3 tablets. Sodium bicarbonate supplementation Sodium bicarbonate supplementation Group taking oral NaHCO3 supplementation in a progressive-dose regimen.
- Primary Outcome Measures
Name Time Method Changes in anaerobic capacity after sodium bicarbonate supplementation Baseline and after 10 days The Wingate Anaerobic Test (WAnT)
Changes in specific performance capacity after sodium bicarbonate supplementation Baseline and after 10 days The wrestler's special endurance test - projective test with dummy (DT)
- Secondary Outcome Measures
Name Time Method Changes in blood glucose and hemoglobin concentration after sodium bicarbonate supplementation Baseline and after 10 days Hemoglobin (Hb) \[g/dl\] and glucose \[g/dl\] concentration analysis
Changes in blood hematocrit levels after sodium bicarbonate supplementation Baseline and after 10 days Hematocrit (HCT) \[%\] level analysis
Changes of red and white blood cell concentration in blood after sodium bicarbonate supplementation Baseline and after 10 days Red blood cells (RBC) \[mln/mm³\] and white blood cells (WBC) \[mln/mm³\] concentration analysis
Changes in FRAP concentration Baseline and after 10 days FRAP \[µmol/L\] concentration analysis
Changes of creatine kinase and lactate dehydrogenase activity in blood after sodium bicarbonate supplementation Baseline and after 10 days Creatine kinase \[U/L\] and lactate dehydrogenase \[U/L\] activity analysis
Changes in polyphenols and albumin concentration Baseline and after 10 days Polyphenols \[g/L\] and and albumin \[g/L\] concentration analysis
Changes of lactate and pyruvate concentration in blood after sodium bicarbonate supplementation Baseline and after 10 days Lactate \[mmol/L\] and pyruvate \[mmol/L\] concentration analysis
Trial Locations
- Locations (1)
Poznan University of Life Sciences, ul.Wojska Polskiego 31
🇵🇱Poznań, Wielkopolska, Poland