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Análise do efeito do encurtamento muscular dos flexores da anca na atividade muscular dos extensores da anca em jogadores séniores de futebol
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| PG_30522 | 196.5 KB | Adobe PDF |
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Abstract(s)
Objetivo: O objetivo deste estudo foi comparar a força muscular dos músculos flexores e extensores da anca, bem como a resposta eletromiográfica dos extensores da anca durante uma tarefa dinâmica de agachamento e hiperextensão da anca, em atletas séniores de futebol masculino, com e sem encurtamento dos músculos flexores da anca. Metodologia: 14 jogadores de futebol sénior, sexo masculino, com idade igual ou superior a 18 anos, pertencentes ao União Clube Eirense, participaram neste estudo. Através do teste de thomas modificado, os atletas foram divididos em dois grupos, grupo 1 com encurtamento muscular dos flexores da anca e grupo 2 sem encurtamento dos flexores da anca. Foi avaliada com recurso a célula de carga Lafayette, a força muscular isométrica dos músculos iliopsoas, quadricipede, bicípete femoral, semitendinoso, tensor fáscia lata e glúteo máximo e foi avaliada a atividade eletromiográfica do iliopsoas, semitendinoso, bicípete femoral, tensor fáscia lata e glúteo máximo durante as tarefas dinâmicas de hiperextensão e agachamento. Resultados: Observou-se que que não existem diferenças significativas entre atletas com e sem encurtamento muscular dos flexores da anca relativamente a força muscular mas foram observadas diferenças estatisticamente significativas nas tarefas dinâmicas de hiperextensão e agachamento nos atletas com encurtamento muscular. Conclusão: Na amostra estudada, verificou-se uma menor ativação do glúteo máximo e uma maior ativação do bicípete femoral nos atletas com encurtamento muscular na tarefa dinâmica de agachamento. E verificou-se que o isquiotibial lateral tem maior ativação relativamente ao tensor fáscia lata e glúteo máximo e o glúteo máximo maior ativação relativamente ao tensor fáscia lata tanto na tarefa dinâmica de agachamento como na de hiperextensão.
Objetive: compare the muscle strength of the hip flexor and extensor muscles, as well as the electromyographic response of the hip extensors during a dynamic task of squatting and hip hyperextension in male soccer senior athletes, with and without shortening of the hip flexor muscles. Methodology: 14 senior football players, male, aged 18 years or more, of the União Clube Eirense participated in this study. Using the modified thomas test, the atheles were divided into two groups, group 1 with hip flexor muscle shorness and group 2 with no hip flexor shortess. Using the Lafayette load cell it was evalueated the isometric muscle strength of the iliopsoas, quadricipede, biceps femoris, semitendinosus, fascia lata and maximal gluteus tensor, and the electromyographic activity of the iliopsoas, femoris biceps femoris, semitendinosus, tensor fascia lata and gluteus maximus during dynamic tasks of hyperextension and squat. Results: It was observed that there are no significant differences between athletes with and without shortening of hip flexors relative to muscle strength but significant differences were observed in the dynamic tasks of hyperextension and squatting in athletes with muscle shorteness. Conclusion: In the studied sample, there was lower activation of the gluteus maximus and greater activation of the biceps femoris in athletes with muscle shortness in the dynamic task of squat. It was verified that the lateral hamstring has greater activation relative to the tensor fascia lata and gluteus maximus and the gluteus maximus activation greater than the tensor fascia lata in both the dynamic task of squatting and hyperextension.
Objetive: compare the muscle strength of the hip flexor and extensor muscles, as well as the electromyographic response of the hip extensors during a dynamic task of squatting and hip hyperextension in male soccer senior athletes, with and without shortening of the hip flexor muscles. Methodology: 14 senior football players, male, aged 18 years or more, of the União Clube Eirense participated in this study. Using the modified thomas test, the atheles were divided into two groups, group 1 with hip flexor muscle shorness and group 2 with no hip flexor shortess. Using the Lafayette load cell it was evalueated the isometric muscle strength of the iliopsoas, quadricipede, biceps femoris, semitendinosus, fascia lata and maximal gluteus tensor, and the electromyographic activity of the iliopsoas, femoris biceps femoris, semitendinosus, tensor fascia lata and gluteus maximus during dynamic tasks of hyperextension and squat. Results: It was observed that there are no significant differences between athletes with and without shortening of hip flexors relative to muscle strength but significant differences were observed in the dynamic tasks of hyperextension and squatting in athletes with muscle shorteness. Conclusion: In the studied sample, there was lower activation of the gluteus maximus and greater activation of the biceps femoris in athletes with muscle shortness in the dynamic task of squat. It was verified that the lateral hamstring has greater activation relative to the tensor fascia lata and gluteus maximus and the gluteus maximus activation greater than the tensor fascia lata in both the dynamic task of squatting and hyperextension.
Description
Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em Fisioterapia
Keywords
Força Encurtamento muscular EMG Agachamento Hiperextensão Strength Muscle shortness EMG Squatting Hyperextension