Loading...
Publication
Efeito agudo da libertação miofascial na ativação muscular do movimento de snatch/arranco
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.4 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Introdução: Inventada por Barnes & Barnes, (1997), a Myofascial Release (MFR) ou Libertação Miofascial é uma terapia que promove força mecânica direta sobre os tecidos moles com o intuito de manipular o sistema miofascial, diminuir a tensão muscular que envolve a articulação, promover alongamento da fáscia restrita e influenciar o equilíbrio da relação mobilidade/estabilidade musculoesquelética (X. Chen et al., 2020; Macdonald, 2013). O Snatch é caracterizado pelo levantamento da barra do chão para a posição dos braços esticados acima da cabeça através de um movimento único (S. K. Chen et al., 2013; Hadi, 2012). Objetivo: Avaliar a atividade mioelétrica aguda dos músculos agonistas do movimento de snatch/Arranco através da Eletromiografia de superfície (EMG) antes e logo após a aplicação da MFR manual em seus antagonistas a partir da segunda puxada. Materiais e Métodos: Foi realizado um estudo do tipo quantitativo experimental, aleatorizado e controlado, que incluiu 30 atletas (n=30) amadores e/ou profissionais praticantes de Crossfit e/ou Halterofilismo, de ambos os gêneros e prática de pelo menos 1 ano. A coleta de dados foi realizada através de EMG no membro superior do lado dominante, com carga de 80% 1-RM antes e após (T1 e T2) a MFR para o grupo experimental e de effleurage superficial no grupo controlo, coletadas em 3 repetições com intervalo de 30 seg entre elas. Os dados foram analisados pelo software SPSS e apresentados em percentual da máxima contração voluntária (%MVC). Foram utilizados os testes de Wilcoxon para medidas não-paramétricas e U de Mann-Whitney para a comparação entre grupos. Resultados: Não foram encontradas diferenças significativas entre grupos. Apenas o Trapézio Superior obteve diferença significativa (p<0,03) para aumento do %MVC na diferença T2-T1. Conclusão: As duas técnicas de massagem despertaram aumento do esforço muscular da musculatura agonista ao movimento de snatch.
Introduction: Invented by Barnes & Barnes, (1997), Myofascial Release (MFR) is a therapy that promotes direct mechanical force on soft tissues in order to manipulate the myofascial system, promote stretching of the restricted fascia and restore the ideal length of the tissues. Thus, it is possible to reduce the muscle tension surrounding the joint, also analgesia and balance the musculoskeletal mobility/stability relationship (X. Chen et al., 2020; Macdonald, 2013). The snatch is characterized by lifting the barbell from the floor to a position with the arms extended above the head through a single, continuous movement (S. K. Chen et al., 2013; Hadi, 2012). Goal: The present study aims to evaluate the acute myoelectric activity of the muscles that perform the snatch/start movement through Surface Electromyography (EMG) before and immediately after applying manual MFR on the antagonist musculature from the second pull-up. Materials and Methods: the method used was quantitative experimental, randomized and controlled. Thirty athletes (n=30) were included, amateurs and/or professionals of the Crossfit and/or Weightlifting modalities, both genders, and practice time in these modalities of at least 1 year. The data collection was done through EMG in the upper limb of the dominant side, with a load of 80% 1-RM before and after (T1 and T2) the MFR for the experimental group and the superficial effleurage technique for the control group, collected in 3 repetitions in each task, with an interval of 30 seconds between them. The SPSS software analyzed the data, and the results were obtained in percentage relative to the maximum voluntary contraction (% MVC). The Wilcoxon test was used for non-parametric measures, and the Mann-Whitney U test for comparison between groups. Results: The results indicated no significant differences in the characterization of the sample. Only the upper trapezius obtained a significant difference (p<0.03) in the T2-T1 difference. Conclusion: Therefore, it was concluded that the two massage techniques performed elicited increased muscular effort in the agonist muscles of the snatch movement.
Introduction: Invented by Barnes & Barnes, (1997), Myofascial Release (MFR) is a therapy that promotes direct mechanical force on soft tissues in order to manipulate the myofascial system, promote stretching of the restricted fascia and restore the ideal length of the tissues. Thus, it is possible to reduce the muscle tension surrounding the joint, also analgesia and balance the musculoskeletal mobility/stability relationship (X. Chen et al., 2020; Macdonald, 2013). The snatch is characterized by lifting the barbell from the floor to a position with the arms extended above the head through a single, continuous movement (S. K. Chen et al., 2013; Hadi, 2012). Goal: The present study aims to evaluate the acute myoelectric activity of the muscles that perform the snatch/start movement through Surface Electromyography (EMG) before and immediately after applying manual MFR on the antagonist musculature from the second pull-up. Materials and Methods: the method used was quantitative experimental, randomized and controlled. Thirty athletes (n=30) were included, amateurs and/or professionals of the Crossfit and/or Weightlifting modalities, both genders, and practice time in these modalities of at least 1 year. The data collection was done through EMG in the upper limb of the dominant side, with a load of 80% 1-RM before and after (T1 and T2) the MFR for the experimental group and the superficial effleurage technique for the control group, collected in 3 repetitions in each task, with an interval of 30 seconds between them. The SPSS software analyzed the data, and the results were obtained in percentage relative to the maximum voluntary contraction (% MVC). The Wilcoxon test was used for non-parametric measures, and the Mann-Whitney U test for comparison between groups. Results: The results indicated no significant differences in the characterization of the sample. Only the upper trapezius obtained a significant difference (p<0.03) in the T2-T1 difference. Conclusion: Therefore, it was concluded that the two massage techniques performed elicited increased muscular effort in the agonist muscles of the snatch movement.
Description
Keywords
Eletromiografia Levantamento de peso Terapia de libertação miofascial Electromyography Weight lifting Myofascial release therapy