NCT05883046

The Acute Effects of Combined Caffeine and Sodium Bicarbonate Consumption on Isometric Mid-thigh Pull

The Acute Effects of Pre-Exercise Isolated and Combined Caffeine and Sodium Bicarbonate Consumption on Isometric Mid-thigh Pull Performance: A Placebo-Controlled Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 19 (actual)
• Sponsor: Bozok University · Academic / Other
• Sex: All
• Age: 18 Years – 24 Years
• Healthy volunteers: Accepted

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.

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).

Conditions

• Athletes

Interventions

Type	Name	Description
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
OTHER	Placebo	20gr of maltodextrin (European origin, Alfasol®, Kimbiotek, Turkey)
OTHER	Baseline (Control)	No supplement conditions

Timeline

• Start date: 2022-03-07
• Primary completion: 2022-03-08
• Completion: 2022-03-12
• First posted: 2023-05-31
• Last updated: 2023-05-31

Locations

1 site across 1 country: Turkey (Türkiye)