Comment on “CYP1A2 Genotype Modifies the Effects of Caffeine Compared With Placebo on Muscle Strength in Competitive Male Athletes”

in International Journal of Sport Nutrition and Exercise Metabolism

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Gabriel BarretoApplied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil

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Gabriel P. EstevesApplied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil

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Felipe Miguel MarticorenaApplied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil

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Bryan SaundersApplied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
Institute of Orthopaedics and Traumatology, Faculty of Medicine FMUSP, University of São Paulo, Sao Paulo, Brazil

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Barreto (gabriel.castanhob@usp.br) is corresponding author.

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  • Amaral, C.A., Amaral, T.L.M., Monteiro, G.T.R., Vasconcellos, M.T.L., & Portela, M.C. (2019). Hand grip strength: Reference values for adults and elderly people of Rio Branco, Acre, Brazil. PLoS One, 14(1), e0211452. https://doi.org/10.1371/journal.pone.0211452

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  • Franchini, E., Schwartz, J., & Takito, M.Y. (2018). Maximal isometric handgrip strength: Comparison between weight categories and classificatory table for adult judo athletes. Journal of Exercise Rehabilitation, 14(6), 968973. https://doi.org/10.12965/jer.1836396.198

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  • Gerodimos, V. (2012). Reliability of handgrip strength test in basketball players. Journal of Human Kinetics, 31(2012), 2536. https://doi.org/10.2478/v10078-012-0003-y

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  • Guest, N., Corey, P., Vescovi, J., & El-Sohemy, A. (2018). Caffeine, CYP1A2 genotype, and endurance performance in athletes. Medicine & Science in Sports & Exercise, 50(8), 15701578. https://doi.org/10.1249/MSS.0000000000001596

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  • Liao, H., Li, Y., & Brooks, G. (2016). Outlier impact and accommodation methods: Multiple comparisons of type I error rates. Journal of Modern Applied Statistical Methods, 15(1), 452471. https://doi.org/10.22237/jmasm/1462076520

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  • San Juan, A.F., López-Samanes, Á., Jodra, P., Valenzuela, P.L., Rueda, J., Veiga-Herreros, P., Pérez-López, A., & Domínguez, R. (2019). Caffeine supplementation improves anaerobic performance and neuromuscular efficiency and fatigue in olympic-level boxers. Nutrients, 11(9), 2120. https://doi.org/10.3390/nu11092120

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  • Wong, O., Marshall, K., Sicova, M., Guest, N.S., García-Bailo, B., & El-Sohemy, A. (2021). CYP1A2 genotype modifies the effects of caffeine compared with placebo on muscle strength in competitive male athletes. International Journal of Sport Nutrition and Exercise Metabolism. 31(5), 420426. https://doi.org/10.1123/ijsnem.2020-0395

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