The Acute Effects of Combined Caffeine and Sodium Bicarbonate Consumption on Isometric Mid-thigh Pull
Study Details
Study Description
Brief Summary
The aim of this study was to investigate the effects of isolated and combined caffeine and sodium bicarbonate consumption on acute isometric mid-thigh pull (IMTP) strength, and verify whether they are cumulative, neutral or subtractive.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
Method: Nineteen Sport Sciences Faculty students (Age 23.6±1.6 years, height 171±9.4 cm, weight 64.3±9.6 kg, fat percentage 20.5±7.3 %, BMI 21.7±2.4 kg/m2) participated and completed the intervention. This study was designed as crossover, double-blind and placebo-controlled. Subjects participated under 5 crossover conditions: control (without supplement) (Con), placebo (Pla), caffeine (Caf), sodium bicarbonate (NaHCO3) and caffeine+sodium bicarbonate (Caf+NaHCO3). For Caf conditions, participants consumed 6 mg/kg of caffeine, obtained from dosing the content of 200 mg capsules. As for NaHCO3 conditions, participants consumed 0.3 g/kg of sodium bicarbonate dissolved in water. For the combined condition, (Caf+NaHCO3), intake was set at 6 mg of caffeine and 0.3 g of sodium bicarbonate per kilogram of body weight. All supplements were consumed 60 min before the tests. Two submaximal trials of IMTP were performed at increasing intensities for 5 seconds (approximately %40-60 and %60-80 of their individually perceived 1RM, respectively, with 60-second rest intervals).
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Other: Baseline The control measurement was made as a baseline measurement without supplementation |
Other: Baseline (Control)
No supplement conditions
|
| Placebo Comparator: Placebo During Placebo conditions, participants consumed 20gr of maltodextrin (European origin, Alfasol®, Kimbiotek, Turkey). |
Other: Placebo
20gr of maltodextrin (European origin, Alfasol®, Kimbiotek, Turkey)
|
| Experimental: Caffeine For Caffeine conditions, participants consumed 6 mg/kg of caffeine, obtained from dosing the content of 200 mg capsules (Nature's Supreme® Caffeine) |
Other: Performance-Enhancing Substances
All supplements were consumed 60 min before the isometric mid-thigh pull tests, to reach peak blood concentrations at evaluation time. Immediately after consumption, both Control and intervention participants rested in a quiet laboratory environment (Eskişehir Technical University, Laboratory of Human Athletic Performance), until the strength tests. Participants were previously informed verbally and in writing that they should abstain from caffeine consumption (any caffeine-containing beverages and foods, such as coffee or tea, energy drinks, cocoa and cocoa-containing foods, chocolate and chocolate-containing foods or caffeine-containing drugs) for at least 24 hours before
|
| Experimental: NaHCO3 As for NaHCO3 conditions, participants consumed 0.3 g/kg of sodium bicarbonate (Alfasol®, Kimbiotek, Turkey) dissolved in water |
Other: Performance-Enhancing Substances
All supplements were consumed 60 min before the isometric mid-thigh pull tests, to reach peak blood concentrations at evaluation time. Immediately after consumption, both Control and intervention participants rested in a quiet laboratory environment (Eskişehir Technical University, Laboratory of Human Athletic Performance), until the strength tests. Participants were previously informed verbally and in writing that they should abstain from caffeine consumption (any caffeine-containing beverages and foods, such as coffee or tea, energy drinks, cocoa and cocoa-containing foods, chocolate and chocolate-containing foods or caffeine-containing drugs) for at least 24 hours before
|
| Experimental: Combined For the combined condition, (Caf+NaHCO3), 6 mg/kg of caffeine and 0.3 g/kg of sodium bicarbonate per kilogram of body weight of participants were consumed, after being dissolved together in water |
Other: Performance-Enhancing Substances
All supplements were consumed 60 min before the isometric mid-thigh pull tests, to reach peak blood concentrations at evaluation time. Immediately after consumption, both Control and intervention participants rested in a quiet laboratory environment (Eskişehir Technical University, Laboratory of Human Athletic Performance), until the strength tests. Participants were previously informed verbally and in writing that they should abstain from caffeine consumption (any caffeine-containing beverages and foods, such as coffee or tea, energy drinks, cocoa and cocoa-containing foods, chocolate and chocolate-containing foods or caffeine-containing drugs) for at least 24 hours before
|
Outcome Measures
Primary Outcome Measures
- Isometric Mid-Thigh Pull (IMTP) [immediately after the intervention]
to investigate the effects of isolated and combined caffeine and sodium bicarbonate consumption on acute isometric mid-thigh pull (IMTP) strength, and verify whether they are cumulative, neutral or subtractive
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Being physically active and healthy
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Did not use ergogenic supplements in the last 3 months
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Did not consume high doses of caffeine (≤120-170 mg/d) were included in this study
Exclusion Criteria:
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Actively using supplements
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Did not perform maximal effort during performance tests
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Not using the supplements in the correct dose or vomiting after use
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Faculty of Sport Sciences Eskisehir Technical University | Eskişehir | Tepebasi | Turkey | 26555 |
Sponsors and Collaborators
- Bozok University
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- BozokU-SBF-IK-01