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Effects of chronic betaine supplementation on exercise performance: Systematic review and meta-analysis

2024, Zawieja, Emilia, Machek, Steven, Zanchi, Nelo Eidy, Cholewa, Jason, Woźniewicz, Małgorzata

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The effect of caffeine dose on caffeine and paraxanthine changes in serum and saliva and CYP1A2 enzyme activity in athletes: a randomized placebo-controlled crossover trial

2024, Główka, Natalia, Malik, Jakub, Anioła, Jacek, Zawieja, Emilia, Chmurzyńska, Agata, Durkalec-Michalski, Krzysztof