Earticle

초록

영어

CrossFit is a high-intensity training related to physical fitness and respi-ratory capacity that can promote changes in lung function. This cross- sectional study was aimed at evaluating respiratory muscle strength, electromyographic (EMG) activity, and lung capacity in CrossFit ath-letes. Thirty subjects aged between 25 and 35 years were divided into groups: CrossFit athletes (n=15) and sedentary individuals without co-morbidities (n=15). Respiratory muscle strength was evaluated using maximal inspiratory and expiratory pressures, lung capacity, and EMG of the sternocleidomastoid, serratus anterior, external intercostal, and diaphragm muscles at respiratory rest, maximal inspiration and expira-tion, and respiratory cycle. Data were tabulated and subjected to statis-tical analyses (t-test and Spearman test, P<0.05). Respiratory muscle strength on EMG of the sternocleidomastoid, serratus, external inter-costal, and diaphragm muscles at the respiratory cycle and maximal forced inspiration and expiration were higher in the CrossFit athletes group than in the sedentary group without comorbidities. CrossFit ath-lete group showed significantly strong positive correlation between maximal inspiratory and expiratory muscle strengths (Spearman rho= 0.903, P=0.000), with increasing muscle strength during inspiration fa-voring an increase in strength during expiration. The forced vital capac-ity (FVC) and forced expiratory volume in 1 sec (FEV1) also showed a significantly high positive correlation (Spearman rho=0.912, P=0.000) in the CrossFit athletes group, showing that higher FVC favors higher FEV1. The results of this study suggest that improved fitness is based on in-creased respiratory muscle strength on EMG in CrossFit athletes.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
Ethical approval
Sample selection
Maximal respiratory strength
Vital capacity and forced expiratory volume
Electromyographic activity of the respiratory muscles
Statistical analysis
RESULTS
DISCUSSION
CONFLICT OF INTEREST
ACKNOWLEDGMENTS
REFERENCES

키워드

저자

• Saulo Cesar Vallin Fabrin [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil, Claretiano Center University, São Paulo, Brazil ]
• Marcelo Palinkas [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil, National Institute of Science and Technology in Translational Medicine, São Paulo, Brazil ] Corresponding author
• Evandro Marianetti Fioco [ Claretiano Center University, São Paulo, Brazil ]
• Guilherme Gallo Costa Gomes [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil ]
• Eloisa Maria Gatti Regueiro [ Barão de Mauá Center University, São Paulo, Brazil ]
• Gabriel Pádua da Silva [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil ]
• Selma Siéssere [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil, National Institute of Science and Technology in Translational Medicine, São Paulo, Brazil ]
• Edson Donizetti Verri [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil ]
• Simone Cecilio Hallak Regalo [ Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil, National Institute of Science and Technology in Translational Medicine, São Paulo, Brazil ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  JER [Journal of Exercise Rehabilitation]

• 간기

  격월간

• pISSN

  2288-176X

• eISSN

  2288-1778

• 수록기간

  2013~2026

• 등재여부

  SCOPUS,KCI 등재

• 십진분류

  KDC 517 DDC 613