Nutritional intervention for body recomposition and performance of Crossfit practitioners
DOI:
https://doi.org/10.33448/rsd-v15i1.50524Keywords:
Nutritional strategies, Body recomposition, Crossfit.Abstract
Considering the high physiological demand of CrossFit, characterized by intermittent high-intensity efforts that require adequate energy availability and recovery strategies, there is a clear need for nutritional interventions that optimize performance, body recomposition, and exercise tolerance. This study aims to analyze, through recent scientific literature, the main nutritional strategies applied to CrossFit practitioners and their effects on performance, body composition, and physiological markers. To this end, an integrative review was conducted in the BVS and PubMed databases using descriptors related to nutritional strategies, CrossFit, and body recomposition. After applying the inclusion criteria, nine studies were selected for analysis and synthesis. In this way, it is observed that supplements such as caffeine and sodium bicarbonate show positive results in some scenarios, especially in improving exercise tolerance and increasing training volume, although inconsistent effects are also reported. Dietary strategies such as the Mediterranean diet demonstrate benefits in performance, recovery, and metabolic health, while the ketogenic diet shows improvements in body composition but may negatively affect high-intensity anaerobic efforts. These findings reinforce that responses to interventions vary according to biological individuality and specific training demands. This allows us to conclude that sports nutrition, when individualized and integrated into training planning, plays a decisive role in the performance and recovery of CrossFit practitioners, highlighting the importance of evidence-based professional practice.
References
Baker, M. E, Decesare, K. N., Johnson, A., Kress, K. S., Inman, C. L. & Weiss, E. P. (2019). Short-term mediterranean diet improves endurance exercise performance: A randomized-sequence crossover trial. J Am Coll Nutr. 38(7), 597-605. doi: 10.1080/07315724.2019.1568322. Epub 2019 Feb 13.
Bianchi, E., Erbasan, H., Riso, P. & Perna, S. (2024). Impact of the Mediterranean Diet on Athletic Performance, Muscle Strength, Body Composition, and Antioxidant Markers in Both Athletes and Non-Professional Athletes: A Systematic Review of Intervention Trials. Nutrients, 16(20), 3454. https://doi.org/10.3390/nu16203454.
Chiva-Blanch, G. & Badimon, L. (2017). Effects of polyphenol intake on metabolic syndrome: current evidences from human trials. Oxid med cell longev. 2017:5812401. doi: 10.1155/2017/5812401.
Davis, C, Bryan, J., Hodgson, J. & Murphy, K. (2015). Definition of the mediterranean diet; a literature review. Nutrients. 7(11), 9139-53. doi: 10.3390/nu7115459.
Dominski, F H. & Brandt, R. (2018). Crossfit: um novo modelo de prática corporal inserido no campo da saúde coletiva. Saúde e sociedade. 27(2), 775-87.
Duncan, M. J., Weldon, A. & Price, M. J. (2014). The effect of sodium bicarbonate ingestion on back squat and bench press performance. J Strength Cond Res. 28(5), 1358-66. doi: 10.1519/JSC.0000000000000277.
Durkalec-Michalski, K., Nowaczyk, P. M., Główka, N., Ziobrowska, A., & Podgórski, T. (2021). Is a Four-Week Ketogenic Diet an Effective Nutritional Strategy in CrossFit-Trained Female and Male Athletes? Nutrients, 13(3), 864. https://doi.org/10.3390/nu13030864
Feito, Y. et al. (2018). A 4-year analysis of the incidence of injuries among crossfit-trained participants. Orthopaedic Journal of Sports Medicine. 6(10), 2325967118803100. doi: 10.1177/2325967118803100.
Ficarra, S., Di Raimondo, D., Navarra, G. A., Izadi, M., Amato, A., Macaluso, F. P., Proia, P., Musiari, G., Buscemi, C., Barile, A. M., Randazzo, C., Tuttolomondo, A., Buscemi, S. & Bellafiore, M. (2022). Effects of Mediterranean Diet Combined with CrossFit Training on Trained Adults' Performance and Body Composition. Journal of personalized medicine, 12(8), 1238. https://doi.org/10.3390/jpm12081238.
Gardner, C. D. et al. (2018). Effect of low-fat vs low-carbohydrate diet on 12-month weight loss in overweight adults. Jama. 319(7).
https://jamanetwork.com/journals/jama/fullarticle/2673150.
Glassman, G. (2007). What is fitness? Crossfit Journal. 1(1), 1-11.
Główka, N., Malik, J., Podgórski, T., Stemplewski, R., Maciaszek, J., Ciążyńska, J., Zawieja, E. E., Chmurzynska, A., Nowaczyk, P. M. & Durkalec-Michalski, K. (2024). The dose-dependent effect of caffeine supplementation on performance, reaction time and postural stability in CrossFit - a randomized placebo-controlled crossover trial. Journal of the International Society of Sports Nutrition, 21(1), 2301384. https://doi.org/10.1080/15502783.2023.2301384.
Goldstein, E. R. et al. (2010). International society of sports nutrition position stand: caffeine and performance. Journal of the International Society of Sports Nutrition. 7(1), 5. doi: 10.1186/1550-2783-7-5.
Grgic, J., Mikulic, P., Schoenfeld, B. J., Bishop, D. J. & Pedisic, Z. (2018). The influence of caffeine supplementation for improving strength and muscular endurance: A meta-analysis. Sports medicine. 49(1), 17-30. doi: 10.1007/s40279-018-0997-y.
Grgic, J. et al. (2019). Effects of caffeine intake on muscle strength and power: a systematic review and meta-analysis. J Int Soc Sports Nutr. 15, 11. doi: 10.1186/s12970-018-0216-0. eCollection 2018.
Grgic, J. et al. (2021). Effects of sodium bicarbonate supplementation on exercise performance: a systematic review and meta-analysis. Sports med. 2021. 18(1):71. doi: 10.1186/s12970-021-00469-7.
Hall, K. D. et al. (2019). Ultra-processed diets cause excess calorie intake and weight gain. Cell metabolism. 30(1), 67-77.e3. doi: 10.1016/j.cmet.2019.05.008. Epub 2019 May 16.
Helms, E. R. et al. (2014). Evidence-based recommendations for natural bodybuilding contest preparation. Journal of the International Society of Sports Nutrition. 12, 11:20. doi: 10.1186/1550-2783-11-20. eCollection 2014.
Huggins, K. W. & Roberts, M. D. (2018). The three-month effects of a ketogenic diet on body composition, blood parameters, and performance metrics in crossfit trainees: A pilot study. Sports (basel). 6(1):1. doi: 10.3390/sports6010001.
Kephart, W. C., Pledge, C. D., Roberson, P. A., Mumford, P. W., Romero, M. A., Mobley, C. B., Martin, J. S., Young, K. C., Lowery, R. P., Wilson, J. M., Kerksick, C. M. Et al. (2017). International society of sports nutrition position stand: nutrient timing. Journal of the International Society of Sports Nutrition. 14(1), 33.
Kerksick, C. M., Wilborn, C. D., Roberts, M. D. et al. (2018). ISSN exercise & sports nutrition review update: research & recommendations. J Int Soc Sports Nutr. 15(1), 38. doi: 10.1186/s12970-018-0242-y.
Konidari, Z., Smilios, I., Mougios, V. & Bogdanis, G. C. (2025). Effects of an Acute High Dose of Caffeine on Physiological Responses and Performance During a Strength-Focused CrossFit® Workout: A Randomized, Double-Blind, Crossover Study. Nutrients, 17(9), 1419. https://doi.org/10.3390/nu17091419.
Kreider, R. B et al. (2017). International society of sports nutrition position stand: safety and efficacy of creatine supplementation. Jissn. 14(18).
Krustrup, P, Ermidis G, mohr M. (2015). Sodium bicarbonate intake improves high-intensity intermittent exercise performance in trained young men. J strength cond res. https://link.springer.com/article/10.1186/s12970-017-0173-z
Mcnaughton, L R, Siegler J, Midgley A. (2008). Ergogenic effects of sodium bicarbonate. Curr Sports Med Rep. 7(4), 230-6. doi: 10.1249/JSR.0b013e31817ef530.
Menargues-Ramírez, R., Sospedra, I., Holway, F., Hurtado-sánchez, J. A. & Martínez-sanz, J. M. (2022). Evaluation of body composition in crossfit® athletes and the relation with their results in official training. International Journal of Environmental Research and Public Health. 19(17), 11003. doi: 10.3390/ijerph191711003.
Monteiro, C. A. et al. (2018). The UN Decade of Nutrition, the NOVA food classification and the trouble with ultra-processing. Public Health Nutr. 21:5–17.
Monteiro, C. A. et al. (2016). Classificação dos alimentos. Saúde Pública.
Paoli, A. et al. (2014). Beyond weight loss: a review of the therapeutic uses of very-low-carbohydrate (ketogenic) diets. European Journal of Clinical Nutrition. 67(8), 789-96. doi: 10.1038/ejcn.2013.116. Epub 2013 Jun 26.
Partridge, J. A., Knapp, B. A. & Massengale, B. D. (2014). An investigation of motivational variables in crossfit facilities. J Strength Cond Res. 28(6), 1714-21. doi: 10.1519/JSC.0000000000000288.
Pereira, A. S., Shitsuka, D. M., Parreira, F. J. & Shitsuka, R. (2018). Metodologia da pesquisa científica. Editora da UFSM. https://repositorio.ufsm.br/bitstream/handle/1/15824/Lic_Computacao_Metodologia-Pesquisa-Cientifica.pdf?sequence=1.
Phillips, S. M. (2014). A brief review of critical processes in exercise-induced muscular hypertrophy. Sports medicine. 44 Suppl 1(Suppl 1):S71-7. doi: 10.1007/s40279-014-0152-3.
Rhyu, H. S. & Cho, S. Y. (2014). The effect of weight loss by ketogenic diet on body composition, performance-related physical fitness factors and cytokines of taekwondo athletes. J exerc rehabil. 10(5), 326-31. doi: 10.12965/jer.140160. eCollection 2014 Oct.
Santos Quaresma, M. V. L., Guazzelli Marques, C., & Nakamoto, F. P. (2021). Effects of diet interventions, dietary supplements, and performance-enhancing substances on the performance of CrossFit-trained individuals: A systematic review of clinical studies. Nutrition (Burbank, Los Angeles County, Calif.), 82, 110994. https://doi.org/10.1016/j.nut.2020.110994.
Silva de Souza, R. A., Barreto, G., Alves Freire, P. A., de Abreu, W. C., Saunders, B., & da Silva, S. F. (2024). Sodium bicarbonate improved CrossFit® Benchmark Fran, but not subsequent 500 m rowing performance. Research in sports medicine (Print), 32(6), 965–80. https://doi.org/10.1080/15438627.2024.2324254.
Smith, M. et al. (2013). Crossfit-based high-intensity power training improves maximal aerobic fitness and body composition. Journal of Strength and Conditioning Research. 27(11), 3159-72. doi: 10.1519/JSC.0b013e318289e59f.
Snyder, H. (2019). Literature review as a research methodology: An overview and guidelines. Journal of Business Research, Elsevier. 104(C), 333-9. Doi: 10.1016/j.jbusres.2019.07.039.
Souza, D. B., Del Coso, J., Casonatto, J. & Polito, M. D. (2017). Acute effects of caffeine-containing energy drinks on physical performance: A systematic review and meta-analysis. Journal of Strength and Conditioning Research. 56(1), 13-27. doi: 10.1007/s00394-016-1331-9.
Souza, R. A. S., Silva, A. G., Souza, M. F., Souza, L. K. F., Roschel, H., Silva, S. F. & Saunders, B. (2021). A Systematic Review of CrossFit® Workouts and Dietary and Supplementation Interventions to Guide Nutritional Strategies and Future Research in CrossFit®. International journal of sport nutrition and exercise metabolism, 31(2), 187–205. https://doi.org/10.1123/ijsnem.2020-0223
Sureda, A., Bibiloni, M. D. M., Julibert, A., Bouzas, C., Argelich, E., Llompart, I. et al. (2018). Adherence to the mediterranean diet and inflammatory markers. Nutrients. 10(1):62. doi: 10.3390/nu10010062.
Thomas, D T. et al. (2016). Position of the academy of nutrition and dietetics: nutrition and athletic performance. J Acad Nutr Diet. 116(3), 501-528. doi: 10.1016/j.jand.2015.12.006.
Thomas, D. T., Erdman, K. A. & Burke, L. M. (2016). Position of the academy of nutrition and dietetics, dietitians of canada, and the american college of sports medicine: nutrition and athletic performance. Journal of the Academy of Nutrition and Dietetics. 116(3), 501-28.
Trakman, G. L., Forsyth, A., Hoye, R. & Belski, R. (2017). The nutrition for sport knowledge questionnaire (nskq): development and validation using classical test theory and rasch analysis. J Int Soc Sports Nutr. 3, 14:26. doi: 10.1186/s12970-017-0182-y. eCollection 2017.
Trepanowski, J. F., Kroeger, C. M., Barnosky, A., Klempel, M. C., Bhutani, S., Hoddy, K. K., Gabel, K., Freels, S., Rigdon, J., Rood, J., Ravussin e Varady, K. A. (2017). Effect of alternate-day fasting on weight loss, weight maintenance, and cardioprotection among metabolically healthy obese adults: A randomized clinical trial. JAMA Intern Med. 177(7), 930-938. doi: 10.1001/jamainternmed.2017.0936.
Volek, J. S., Noakes, T. & Phinney, S. D. (2015). Rethinking fat as a fuel for endurance exercise. Eur J Sport Sci. 15(1), 13-20. doi: 10.1080/17461391.2014.959564.
WHO. (2015). Healthy diet. World health organization.
Wilk, M., Filip, A., Krzysztofik, M., Maszczyk, A. & Zajac, A. (2019). The acute effect of various doses of caffeine on power output and velocity during the bench press exercise among athletes habitually using caffeine. Nutrients. 11(7), 1465. doi: 10.3390/nu11071465.
Zeitz, E. K. & Cook L. F., Dexheimer, J. D., Lemez, S., Leyva, W. D., Terbio, I. Y., Tran, J. R. & Jo, E. (2020). The relationship between crossfit® performance and laboratory-based measurements of fitness. Sports (basel). 8(8), 112. doi: 10.3390/sports8080112.
Ziyaiyan, A., Shabkhiz, F., & Hofmeister, M. (2023). Supplementation of caffeine and sodium bicarbonate together could not improve performance and performance-related factors in CrossFit participants: a randomized, double-blind, placebo-controlled study. Journal of the International Society of Sports Nutrition, 20(1), 2206390. https://doi.org/10.1080/15502783.2023.2206390.
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