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

Emilia E ZawiejaKrzysztof Durkalec-MichalskiMarcin SadowskiNatalia GłówkaAgata U Chmurzyńska
Published in: Journal of the International Society of Sports Nutrition (2023)
genotypes. The trial was registered on clinicaltrials.gov (NCT03702205) on 10 October 2018.
Keyphrases
  • phase iii
  • open label
  • phase ii
  • double blind
  • placebo controlled
  • clinical trial
  • study protocol
  • randomized controlled trial
  • replacement therapy