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Characterization of Hormonal, Metabolic, and Inflammatory Responses in CrossFit® Training: A Systematic Review

Authors
  • Jacob, Nacipe1
  • Novaes, Jefferson S.2, 3
  • Behm, David G.4
  • Vieira, João G.2
  • Dias, Marcelo R.2, 5
  • Vianna, Jeferson M.2
  • 1 Medical and Health Sciences College of Juiz de Fora - Suprema, Juiz de Fora , (Brazil)
  • 2 Postgraduate Program in Physical Education of Federal University of Juiz de Fora, Juiz de Fora , (Brazil)
  • 3 Department of Gymnastics, Federal University of Rio de Janeiro, Rio de Janeiro , (Brazil)
  • 4 School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, NL , (Canada)
  • 5 Laboratory of Exercise Physiology and Morphofunctional Assessment of Granbery Methodist College, Juiz de Fora , (Brazil)
Type
Published Article
Journal
Frontiers in Physiology
Publisher
Frontiers Media SA
Publication Date
Aug 28, 2020
Volume
11
Identifiers
DOI: 10.3389/fphys.2020.01001
PMID: 32982775
PMCID: PMC7485252
Source
PubMed Central
Keywords
License
Unknown

Abstract

Background: CrossFit® training is a high-intensity functional training program that aims to increase physical functional performance through biochemical responses, i.e., hormonal, metabolic, and inflammatory responses. Most hormonal, metabolic, and inflammatory changes induced by CrossFit® training have been reported in isolated clinical studies. The purpose of this review was to systematically explore the existing literature on characterization of hormonal, metabolic, and inflammatory responses resulting from CrossFit® training. Methods: A systematic search of the literature was conducted in PubMed, Web of Science and Scopus from August 2019 to October 2019. Studies were selected through critical review of the content. Using specific keywords, 623 articles were found, of which 597 were excluded for ineligibility, and 25 were eligible. The papers were separated according to subject area: hormonal ( n = 8), metabolic ( n = 19), and inflammatory ( n = 6) changes. All were published between 2015 and 2019. Results: This review reveals potential effects of CrossFit® training on hormonal, metabolic, and inflammatory responses. However, studies had low levels of evidence and reliability due to methodological limitations. Conclusion: In summary, the results showed a greater volume and intensity of workouts accentuate the responses, that are of paramount importance for improving understanding of the effects of CrossFit® training and serve as a basis for prescribing future exercise protocols.

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