1. Influência da porção extensora do músculo glúteo mâximo sobre a inclinação da pelve antes e depois da realização de um protocolo de fadiga.
- Author
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Alvim, Felipe C., Peixoto, Jennifer G., Vicente, Eduardo J. D., Chagas, Paula S. C., and Fonseca, Diogo S.
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MUSCLE physiology , *PELVIC physiology , *BUTTOCKS , *STATISTICAL correlation , *POSTURAL balance , *FATIGUE (Physiology) , *PHOTOGRAPHY , *STATISTICS , *T-test (Statistics) , *DATA analysis , *BODY mass index , *ANATOMY , *HISTOLOGY , *PHYSIOLOGY , *PATHOLOGICAL physiology - Abstract
Introduction: There is a lack of data in the literature for determining the influences of the extensor portion of the gluteus maximus muscle on pelvic tilting and, thus, on lumbar stability. Objectives: To assess the influences of the extensor portion of the gluteus maximus muscle on pelvic tilt. Methods: Ten healthy young subjects were recruited, with a body mass index (BMI) below 24.9 kg/m2 and leg length discrepancy below 1 cm. The BMI, pelvic perimeter and lower-limb lengths were assessed and, subsequently, the degrees of hemi-pelvic tilt and asymmetry between them were analyzed using lateral view photographs of the subjects in a standing position, using SAPO (Software for Postural Assessment). Next, fatigue was induced in the extensor portion of the gluteus maximus muscle on the dominant side, and after that the hemi-pelvic tilt and the asymmetry between the hemi-pelvises were reassessed. The Pearson r and Student f tests were conducted at the significance level of α=0.05. Results: There were no significant correlations between the confounding variables and asymmetry of the hemi-pelvic angles. There were significant changes in the hemi-pelvic angle of the dominant side (f=3.760; p=0.004). Conclusions: Fatigue in the extensor portion of the gluteus maximus muscle can generate increases in the tilt angle of the ipsilateral pelvis. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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