Betaine supplementation improves CrossFit performance and increases testosterone levels, but has no influence on Wingate power: randomized crossover trial

Emilia Zawiejaa Poznan University of Life Sciences, Department of Human Nutrition and Dietetics, Poznań, Poland

https://orcid.org/0000-0002-9030-1805 View further author information

Krzysztof Durkalec-Michalskib Poznan University of Physical Education, Department of Sports Dietetics, Poznań, Poland;c Charles University, Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Prague, Czech RepublicView further author information

Marcin Sadowskia Poznan University of Life Sciences, Department of Human Nutrition and Dietetics, Poznań, PolandView further author information

Natalia Główkab Poznan University of Physical Education, Department of Sports Dietetics, Poznań, PolandView further author information

Agata Chmurzynskaa Poznan University of Life Sciences, Department of Human Nutrition and Dietetics, Poznań, PolandCorrespondence[email protected]

https://orcid.org/0000-0002-2045-0709 View further author information

Betaine supplementation improves CrossFit performance and increases testosterone levels, but has no influence on Wingate power: randomized crossover trial

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Betaine supplementation improves CrossFit performance and increases testosterone levels, but has no influence on Wingate power: randomized crossover trial

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