The Influence of Caffeine Supplementation on Specific Performance and Training Activities

Poznan University of Physical Education

Status and phase: Completed; Phase 3

Conditions: Sports; Supplementation

Treatments: Dietary Supplement: Caffeine supplementation; Dietary Supplement: Placebo treatment

Study type: Interventional

Funder types: Other

Identifiers

NCT03822663

ULS00007

Details and patient eligibility

About

The purpose of this study is to verify the effect of acute caffeine (CAF) and placebo (PLA) supplementation on physical capacity and discipline-specific exercise performance in athletes, in a randomised, double-blind, placebo-controlled crossover trial.

Full description

Caffeine (CAF) is often proposed as an ergogenic agent, especially during high-intensity efforts. CAF supplementation may reduce effort-induced multi-faceted symptoms of fatigue and can improve psychomotor functions (like agility or decision-making processes), which is required during the intermittent high-intensity efforts in combat sports and speed-strength disciplines. Moreover, it is suggested that CAF treatment is associated with increased glycolytic activity during simulated or real training/competition bouts, which results in performance and physical capacity improvement.

However, there are hardly any data on the individual CAF-induced and dose-dependent changes in physical capacity and discipline-specific performance in combat sports and speed-strength disciplines. Therefore, the study aims to examine the effect of acute, different-dose CAF ingestion on physical capacity and discipline-specific performance in combat sports and speed-strength athletes, in a randomized, double-blind, placebo-controlled crossover trial.

Enrollment: 26 patients

Sex: All

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• written consent to participate,
• a current medical clearance to practice sports,
• training experience: at least 2 years,
• minimum of 4 workout sessions (in the discipline covered by the study) a week.

Exclusion criteria

• current injury,
• any health-related contraindication,
• declared general feeling of being unwell,
• unwilling to follow the study protocol.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Triple Blind

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26 participants in 2 patient groups, including a placebo group

Caffeine supplementation

Experimental group

Description:

Group taking oral CAF (Caffeine) supplementation in a different-dose crossover regimen.

Treatment:

Dietary Supplement: Caffeine supplementation

Placebo treatment

Placebo Comparator group

Description:

Group taking oral supplementation with placebo.

Treatment:

Dietary Supplement: Placebo treatment