Nível de ativação do músculo eretor da coluna na região lombar em diferentes exercícios e em indivíduos com e sem lombalgia
Several studies confirm the involvement of the lumbar muscle in various body movements and physical exercises, but the level of activation of this muscle in exercises with different positions and range of motion are not clear in the literature. Especially in individuals with low back pain because th...
| Autor principal: | Guimarães, Andrey Valenga |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/7918 |
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| Resumo: |
Several studies confirm the involvement of the lumbar muscle in various body movements and physical exercises, but the level of activation of this muscle in exercises with different positions and range of motion are not clear in the literature. Especially in individuals with low back pain because they can use different compensatory mechanisms due to pain and muscle weakness. In this way the present study intends to evaluate the level of activation of the erector muscle of the spine in the lumbar region in four exercises commonly used for the strengthening and prevention of back pain. With this, 24 men aged between 18 and 30 years were invited to participate in the research. Participants without low back pain formed the control group (GC = 12) and men with chronic nonspecific low back pain for more than 1 year formed the group with low back pain (GL = 12). Both groups underwent surface electromyography to quantify muscle activation during maximal voluntary isometric contraction (MVIC) of the erector of the spine in the lumbar region. The groups performed the exercises 1) Hyperextension of the trunk and elevation of legs; 2) Hyperextension of the unilateral trunk arm and left leg; 3) Hyperextension of the trunk unilateral arm and right leg; 4) Hyperextension of the alternating right arm and left leg; 5) Hyperextension of the alternating trunk left arm and right leg; 6) Four onesided right arm and left leg supports; 7) Four one-sided left arm and right leg supports. Data on the characteristic of the sample were submitted to a standard descriptive analysis (mean and standard deviation). Analysis of variance (ANOVA two-way) was used to compare the RMS values of the erector spine in the different exercises. The Bonferroni post hoc application was used when necessary. The level of significance was p <0.05. Results:. The level of pain reported by GL through the Visual Pain Scale (DLE) was 4 ± 1.0 points and 7 points for the Roland-Morris Questionnaire. The RMS during MVIC was similar in both groups (p> 0.05). The CG presented similarities in the RMS of the exercise trunk hyperextension and leg elevation, but significant differences were observed in the GL between the right and left sides (p <0.05) and the right side GC with the right and left sides of the CL p <0.05). In the exercise hyperextension of the trunk unilateral arm and left leg and hyperextension of the trunk unilateral arm and right lower leg erector muscle activations were observed for the CG on the side that the movement was performed and significant differences between the right and left sides of the GL and GC were found (p <0.05). It was evidenced that there is a significant difference between the control and pain groups in the exercises of trunk hyperextension and elevation of arms and legs and unilateral, in which the individuals with low back pain compensate this muscular activation possibly with other muscles not following the pattern found in the group control. |
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