Crossfit®: An Approach to Bite Force and Masticatory Muscle Thickness
Lígia Franco Oliveira1, Marcelo Palinkas1,2*, Nayara Soares da Silva1, Natália de Morais Barbosa1, Evandro Marianetti Fioco1, Edson Donizetti Verri1, Saulo César Vallin Fabrin1, Guilherme Gallo Costa Gomes1, Isabela Hallak Regalo1, Selma Siéssere1,2 and Simone Cecilio Hallak Regalo1,2
1Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, Brazil
2Department of Neuroscience and Behavioral Sciences, Faculty of Medicine of Ribeirão Preto, University of São Paulo and National Institute and Technology - Translational Medicine (INCT.TM), Brazil
*Corresponding Author: Marcelo Palinkas, Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
Received: October 27, 2021; Published: November 30, 2021
&nbssp;Crossfit® is based on physical improvements related to strength and endurance. This study aimed to evaluate the molar bite force and masticatory muscle thickness in athletes practicing Crossfit®. This cross-sectional study included 40 participants who were divided into groups: athletes who had been practicing Crossfit® (n = 20) and healthy participants who were not practicing physical exercise (n = 20). The molar bite force (right and left sides) was measured using a dynamometer. The thickness of the masseter and temporalis muscles at rest and dental clenching in maximum voluntary contraction tasks were analyzed using ultrasound. The data were analyzed using a t-test with a 5% significance level. Significant differences were found in the right (p = 0.001) and left (p = 0.008) maximum bite forces between the two groups. The Crossfit® group showed a greater maximum bite force than the non-sports group. There were significant differences in the thickness of the right (p = 0.032) and left (p = 0.004) masseter muscles during dental clenching in maximum voluntary contraction, and in the thickness of the left masseter muscle (p = 0.015) at rest. The Crossfit® group showed greater muscle thickness than the non-sports group. The results of this study suggest that Crossfit® produces morphofunctional changes in the stomatognathic system when maximum bite force and masseter and temporalis muscles thickness are observed. We highlight the importance of analyzing the stomatognathic system of athletes who practice strength and endurance sports, showing the importance of knowing the functional characteristics of the organism as a whole to improve physical performance.
Keywords: Crossfit®; Physical Activity; Bite Force; Muscle Thickness; Masticatory Muscle
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