Effects and symptoms of dehydration in Brazilian jiu-jitsu athletes

Authors

  • João Carlos Alves Bueno Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina
  • Leonardo Vidal Andreato Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina
  • Alexandro Andrade Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina
  • Miguel Alencar Flores Junior Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina
  • Ragami Chaves Alves Department of Physical Education, Federal University of Paraná
  • André de Camargo Smolarek Department of Physical Education, Federal University of Paraná
  • Tácito Pessoa de Souza Junior Department of Physical Education, Federal University of Paraná
  • Fabricio Boscolo Del Vecchio School of Physical Education, Federal University of Pelotas

DOI:

https://doi.org/10.18002/rama.v18i1.7208

Keywords:

Martial arts, combat sports, BJJ, dehydration, weight loss, sport competition

Agencies:

Coordination for the Improvement of Higher Education Personnel—Brazil (CAPES)

Abstract

Objective. To measure rapid weight loss and urinary indicators of hydration status, as well as to assess the effects and symptoms of dehydration in Brazilian jiu-jitsu (BJJ) athletes at different moments. Methods. 17 male BJJ athletes (aged: 24.4 ± 3.5 years; body mass (BM): 76.8 ± 14.6 kg; body fat: 16.6 ± 6.4%), were evaluated between 8 and 9 am at three different moments: Baseline (10 days pre- competition), measurement of BM and stature, collection of urine samples, and food record of the previous 24 hours; pre-competition, measurement of BM, urine samples, and questionnaire to assess rapid weight loss (RWL), and post-competition (24h after), day after competition, with measurement of BM, and urine samples for analysis of specific gravity. Results. There was a tendency to decrease BM to compete (baseline: 76.8 ± 14.6 kg, pre-competition: 75.4 ± 13.4 kg, post-competition: 77.3 ± 13.7 kg; p < 0.07), with 88.2% of athletes using methods that increase dehydration. The majority of athletes were dehydrated at the three time points of the study (94.1%; USG = 1.021 ± 0.005 Usg at baseline, 88.2%; 1.020 ± 0.007 Usg at pre-competition, 88.2%; 1.022 ± 0.008 Usg on the post-competition day), accompanied by symptoms associated with RWL (82.4% increased heart rate, 52.9% headache, 47.1% hot flashes, 41.2% nausea, 41.2% disorientation, and 29.4% dizziness). Conclusions. Rapid pre-competitive weight loss and symptoms associated with dehydration were observed in the BJJ athletes. It is recommended that educational measures are promoted to inhibit RWL among BJJ athletes, requiring the engagement of health professionals and organizations that govern the sport (federations and confederations).

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Author Biographies

João Carlos Alves Bueno, Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina

João Carlos Alves Bueno (Brazil). PhD in Human Movement Sciences (UDESC). Researcher at the Laboratory of Sport and Exercise Psychology (LAPE), and linked to the Research Group on Metabolism, Nutrition and Strength Training (GPMENUTF). Brown belt in Brazilian Jiu-Jitsu. E-mail: contato.edufisica@hotmail.com

Leonardo Vidal Andreato, Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina

Leonardo Vidal Andreato (Brazil). PhD in Human Movement Sciences (UDESC). Researcher at the Laboratory of Sport and Exercise Psychology (LAPE), linked as a professor at the University of the State of Amazonas (UEA) and at the Faculty of Sports and Health Sciences (UDESC). Black belt in Brazilian Jiu-Jitsu. E-mail: vidal.leo@hotmail.com

Alexandro Andrade, Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina

Alexandro Andrade PhD in Production Engineering (UDESC), doctoral advisor at UDESC. Leader of the Sports and Exercise Psychology Research Laboratory (LAPE), linked to the Faculty of Sports and Health Sciences (UDESC). E-mail: d2aa@hotmail.com

Miguel Alencar Flores Junior, Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina

Miguel Alencar Flores Junior (Brazil). Master in Human Movement Sciences (UDESC). Researcher at the Laboratory of Sport and Exercise Psychology (LAPE), linked to the Faculty of Health and Sport Sciences (UDESC). Black Belt in Brazilian Jiu-Jitsu. E-mail: dedeoflores@hotmail.comb,

Ragami Chaves Alves, Department of Physical Education, Federal University of Paraná

Ragami Chaves Alves (Brazil). PhD in Physical Education (UFPR). Researcher of the Research Group on Metabolism, Nutrition and Strength Training (GPMENUTF). E-mail: ragami1@hotmail.coma,

André de Camargo Smolarek, Department of Physical Education, Federal University of Paraná

André de Camargo Smolarek (Brazil). PhD in Physical Education (UFPR). Researcher of the Research Group on Metabolism, Nutrition and Strength Training (GPMENUTF). E-mail: andrecsk@gmail.com

Tácito Pessoa de Souza Junior, Department of Physical Education, Federal University of Paraná

Tácito Pessoa de Souza Junior (Brazil). PhD in Sports Sciences (UNICAMP), PhD advisor for UFPR. Leader of the Research Group on Metabolism, Nutrition and Strength Training (GPMENUTF), Faixa preta de Brazilian Jiu-Jitsu. E-mail: tacitojr2009@hotmail.com

Fabricio Boscolo Del Vecchio, School of Physical Education, Federal University of Pelotas

Fabricio Boscolo Del Vecchio (Brazil). PhD in Physical Education in FEF/UNICAMP, PHD advisor in ESEF/UFPel. Leader of the group of studies and research in sports training and human performance (GEPETED) in ESEF/UFPel. Black belt 2º dan in Judo. E-mail: fabricio_boscolo@uol.com.br

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2023-03-12

How to Cite

Bueno, J. C. A., Andreato, L. V., Andrade, A., Flores Junior, M. A., Alves, R. C., Smolarek, A. de C., de Souza Junior, T. P., & Del Vecchio, F. B. (2023). Effects and symptoms of dehydration in Brazilian jiu-jitsu athletes. Revista de Artes Marciales Asiáticas, 18(1), 1–11. https://doi.org/10.18002/rama.v18i1.7208

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