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Erschienen in: European Journal of Applied Physiology 12/2021

16.09.2021 | Original Article

Caffeine, genetic variation and anaerobic performance in male athletes: a randomized controlled trial

verfasst von: Marc Sicova, Nanci S. Guest, Pascal N. Tyrrell, Ahmed El-Sohemy

Erschienen in: European Journal of Applied Physiology | Ausgabe 12/2021

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Abstract

Purpose

The effect of caffeine on anaerobic performance is unclear and may differ depending on an individual’s genetics. The goal of this study was to determine whether caffeine influences anaerobic performance in a 30 s Wingate test, and if 14 single nucleotide polymorphisms (SNPs) in nine genes, associated with caffeine metabolism or response, modify caffeine’s effects.

Methods

Competitive male athletes (N = 100; 25 ± 4 years) completed the Wingate under three conditions: 0, 2, or 4 mg of caffeine per kg of body mass (mg kg−1), using a double-blinded, placebo-controlled design. Using saliva samples, participants were genotyped for the 14 SNPs. The outcomes were peak power (Watts [W]), average power (Watts [W]), and fatigue index (%).

Results

There was no main effect of caffeine on Wingate outcomes. One significant caffeine–gene interaction was observed for CYP1A2 (rs762551, p = 0.004) on average power. However, post hoc analysis showed no difference in caffeine’s effects within CYP1A2 genotypes for average power performance. No significant caffeine–gene interactions were observed for the remaining SNPs on peak power, average power and fatigue index.

Conclusion

Caffeine had no effect on anaerobic performance and variations in several genes did not modify any effects of caffeine.

Trial registration

This study was registered with clinicaltrials.gov (NCT02109783).
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Metadaten
Titel
Caffeine, genetic variation and anaerobic performance in male athletes: a randomized controlled trial
verfasst von
Marc Sicova
Nanci S. Guest
Pascal N. Tyrrell
Ahmed El-Sohemy
Publikationsdatum
16.09.2021
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Applied Physiology / Ausgabe 12/2021
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-021-04799-x

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