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

Bozok University

Status: Completed

Conditions: Athletes

Treatments: Other: Baseline (Control); Other: Performance-Enhancing Substances; Other: Placebo

Study type: Interventional

Funder types: Other

Identifiers

NCT05883046

BozokU-SBF-IK-01

Details and patient eligibility

About

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.

Full 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).

Enrollment: 19 patients

Sex: All

Ages: 18 to 24 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Being physically active and healthy
• Did not use ergogenic supplements in the last 3 months
• Did not consume high doses of caffeine (≤120-170 mg/d) were included in this study

Exclusion criteria

• Actively using supplements
• Did not perform maximal effort during performance tests
• Not using the supplements in the correct dose or vomiting after use

Trial design

Primary purpose: Other

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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19 participants in 5 patient groups, including a placebo group

Baseline

Other group

Description:

The control measurement was made as a baseline measurement without supplementation

Treatment:

Other: Baseline (Control)

Placebo

Placebo Comparator group

Description:

During Placebo conditions, participants consumed 20gr of maltodextrin (European origin, Alfasol®, Kimbiotek, Turkey).

Treatment:

Other: Placebo

Caffeine

Experimental group

Description:

For Caffeine conditions, participants consumed 6 mg/kg of caffeine, obtained from dosing the content of 200 mg capsules (Nature's Supreme® Caffeine)

Treatment:

Other: Performance-Enhancing Substances

NaHCO3

Experimental group

Description:

As for NaHCO3 conditions, participants consumed 0.3 g/kg of sodium bicarbonate (Alfasol®, Kimbiotek, Turkey) dissolved in water

Treatment:

Other: Performance-Enhancing Substances

Combined

Experimental group

Description:

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

Treatment:

Other: Performance-Enhancing Substances