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Are Caffeine's Effects on Resistance Exercise and Jumping Performance Moderated by Training Status?
Erfan Berjisian1, Alireza Naderi2, Shima Mojtahedi1
1Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Tehran University, Tehran 1417935840, Iran.
Nutrients
|November 26, 2022
Summary
Caffeine supplementation enhances muscular strength, endurance, and jump performance in both trained and untrained individuals. The training status did not significantly alter these ergogenic effects of caffeine.
Area of Science:
- Exercise Physiology
- Nutritional Biochemistry
- Sports Science
Background:
- Caffeine is a widely used ergogenic aid.
- Its effects on exercise performance may vary with training status.
Purpose of the Study:
- To investigate the impact of caffeine on resistance exercise and jumping performance.
- To determine if training status moderates these effects.
Main Methods:
- Randomized, double-blind, crossover study with resistance-trained and recreationally active males.
- Assessed one-repetition maximum (1RM) strength, muscular endurance, and countermovement jump (CMJ) height.
- Administered caffeine (6 mg/kg), placebo, or no substance (control).
Main Results:
- Caffeine significantly improved weight lifted in 1RM bench press and squat, muscular endurance, and CMJ height compared to control and placebo.
- Effect sizes were large for muscular endurance, small for jump height, and trivial for muscular strength.
- No significant interaction between training status and caffeine effects was observed.
Conclusions:
- Caffeine ingestion provides ergogenic benefits for muscular strength, endurance, and jump performance.
- These benefits appear consistent across both resistance-trained and recreationally active males.
- Training status does not appear to be a significant moderating factor for caffeine's ergogenic effects in these populations.
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