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Análise eletromiográfica das subdivisões do médio glúteo durante a realização de exercícios sem carga adicional
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| 5.1 MB | Adobe PDF |
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Advisor(s)
Abstract(s)
Introdução: O médio glúteo (MG) é um músculo segmentado que contém três
subdivisões, sendo sugeridos diferentes exercícios sem carga adicional para
fortalecimento das respetivas subdivisões.
Objetivo: Avaliar e comparar a intensidade de atividade muscular das três subdivisões
do MG durante a realização de 4 exercícios sem carga adicional.
Metodologia: Um total de 23 sujeitos saudáveis e ativos participaram neste estudo. Foi
utilizada eletromiografia de superfície para avaliar a ativação das três subdivisões do MG
em quatro exercícios: Abdução da anca (ABD), Clam exercise 30° (CLAM30), Clam
exercise 60° (CLAM60), Figure-of-four position (FFP). Foi utilizado o teste não
paramétrico de Mann-Whitney U para comparar a ativação muscular das diferentes
subdivisões.
Resultados: O exercício ABD apresentou níveis de ativação superiores relativamente
aos outros exercícios, com diferenças estatisticamente significativas (p<0.001) para
todas as subdivisões. Os exercícios CLAM30, CLAM60 e FFP não apresentaram
diferenças estatisticamente significativas entre si.
Conclusão: Os resultados deste estudo reforçam a hipótese de que as subdivisões do
MG têm ações funcionais distintas e que os níveis de ativação muscular são
influenciados pelo tipo de exercício. Demonstrou também que o exercício de Abdução
da Anca é uma alternativa viável de fortalecimento da subdivisão posterior, apesar de ser
um exercício sem carga adicional.
Introduction: Gluteus medius (GM) is a segmented muscle containing three subdivisions. Different non-weight-bearing exercises have been suggested to strengthen the subdivisions specifically. Objective: This study evaluated the muscular activity of the three GM subdivisions (anterior, middle, posterior) in non-weight-bearing exercises. Methodology: A total of 23 healthy and physically active subjects participated in this study. Surface electromyography was used to assess the muscle activation of the GM subdivisions across four different exercises: Hip Abduction (ABD), Clam exercise 30° (CLAM30), Clam exercise 60° (CLAM60), Figure-of-four position (FFP). A non-parametric test, Mann-Whitney U was used to compare the activity of the different subdivisions. Results: There were statistically significant differences (p<0.001) when comparing all the subdivisions on the ABD exercise with the remaining exercises. The remaining exercises didn’t show any statistically significant differences among themselves. Conclusion: This study results reinforce the hypothesis that the GM subdivisions have distinct functional actions and that the activation levels are influenced by the type of exercise. They have also shown the ABD exercise to be a viable option for strengthening the posterior subdivision, despite being a non-weight-bearing exercise.
Introduction: Gluteus medius (GM) is a segmented muscle containing three subdivisions. Different non-weight-bearing exercises have been suggested to strengthen the subdivisions specifically. Objective: This study evaluated the muscular activity of the three GM subdivisions (anterior, middle, posterior) in non-weight-bearing exercises. Methodology: A total of 23 healthy and physically active subjects participated in this study. Surface electromyography was used to assess the muscle activation of the GM subdivisions across four different exercises: Hip Abduction (ABD), Clam exercise 30° (CLAM30), Clam exercise 60° (CLAM60), Figure-of-four position (FFP). A non-parametric test, Mann-Whitney U was used to compare the activity of the different subdivisions. Results: There were statistically significant differences (p<0.001) when comparing all the subdivisions on the ABD exercise with the remaining exercises. The remaining exercises didn’t show any statistically significant differences among themselves. Conclusion: This study results reinforce the hypothesis that the GM subdivisions have distinct functional actions and that the activation levels are influenced by the type of exercise. They have also shown the ABD exercise to be a viable option for strengthening the posterior subdivision, despite being a non-weight-bearing exercise.
Description
Keywords
Médio glúteo Subdivisões Exercício Eletromiografia de superfície Atividade muscular Gluteus medius Subdivisions Exercise Surface electromyography Muscular activity