Sport, Supplementation
Conditions
Keywords
Crossfit, Sodium bicarbonate, Physical capacity
Brief summary
The purpose of this study was to verify the effect of 10-day sodium bicarbonate (NaHCO3) and placebo (PLA) supplementation on body composition, physical capacity, as well as concentrations of the selected biochemical blood markers in trained athletes, in a randomised, double-blind, placebo-controlled crossover 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, body composition and concentrations of the selected biochemical blood markers in trained athletes, in a randomised, double-blind, placebo-controlled crossover trial.
Interventions
DIETARY_SUPPLEMENTSodium bicarbonate supplementation
DIETARY_SUPPLEMENTPlacebo treatment
Sponsors
Poznan University of PhysED
Poznan University of Life Sciences
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
20 Years to 43 Years
Healthy volunteers
Yes
Inclusion criteria
* written consent to participate, * a current medical clearance to practice sports, * training experience: at least 2 years (of CrossFit training), * minimum of 3 workout sessions (CrossFit) a week, * 20-43 years.
Exclusion criteria
* current injury, * any health-related contraindication, * declared general feeling of being unwell, * unwilling to follow the study protocol.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes in aerobic capacity after sodium bicarbonate supplementation | Baseline and after 10 days | The incremental cycling test (ICT) |
| Changes in specific performance capacity after sodium bicarbonate supplementation | Baseline and after 10 days | The CrossFit-specific physical fitness test: Fight Gone Bad (FGB) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 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 in fat mass and fat free mass after sodium bicarbonate supplementation | Baseline and after 10 days | Fat mass (kg) and fat free mass (kg) 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 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 |
| 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 |
Countries
Poland
Outcome results
None listed