Mechanical response of knee muscles in high level bodyboarders during performance

Revista Brasileira de Medicina do Esporte

Dario Rodríguez-matoso¹  Alejandro Mantecón¹  Eduardo Barbosa-almeida¹  Teresa Valverde¹  Juan Manuel García-manso¹  David Rodríguez-ruiz¹ 

关键词: sports;    muscle fatigue;    muscle strength dynamometer;    myography;    esportes;    fadiga muscular;    dinamômetro de força muscular;    miografia;    deportes;    fatiga muscular;    dinamómetro de fuerza muscular;    miografía;   

DOI  :  10.1590/1517-86922015210201507

来源: SciELO

【 摘 要 】

INTRODUCTION: bodyboarding is a kind of surfing that has been growing very rapidly over the last decade and has now developed into one of the fastest growing water sports in the world.OBJECTIVES: evaluate the effects of fatigue on rectus femoris RF, vastus lateralis VL and vastus medialis VM and biceps femoris BF and semitendinosus ST during a high-level bodyboard competition using tensiomyography TMG.METHODS: subjects were 11 highly experienced years of practice: 15, SD=4.65 male bodyboarders age: 28.17, SD=2.89, body weight: 74.83, SD=6.13kg; height: 179.25, SD=3.93cm; BMI: 23.29, SD=1.81 participating in the final of the 2010 Spanish championship.RESULTS: the fatigue is especially evident due to a decrease in the values of relaxation time Tr and sustain time Ts caused by the specific characteristics of waves, how the waves evolve and the type of manoeuvre executed in competition due to the wave characteristics. The maximum radial displacement Dm value increased slightly in all muscles analysed and normalised response speed Vrn was stable, with a tendency to improve as athletes adapted to the type of physical effort and the environmental conditions of the competition.CONCLUSIONS: the study shows that the fatigue in the extensor and flexor muscles of the knee occurs in response to the demands of competition.

【 授权许可】

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