Eliane C R Corrêa1, Fausto Bérzin. 1. Department of Physical Therapy, Faculty of Physical Therapy, Federal University of Santa Maria, Rio Grande do Sul, Brazil. eliftrs@yahoo.com.br
Abstract
OBJECTIVE: This study aimed to evaluate the recruitment of cervical muscles during nasal inspiration before and after breathing and postural exercises on the Swiss Ball in children with Mouth Breathing Syndrome (MBS). METHOD: Surface electromyography from the sternocleidomastoid (SCM), sub-occipitals and upper Trapezius muscles was recorded during nasal inspiration, before and at the end of three months of the treatment. A physical therapy program consisting in muscular stretching and strengthening exercises along with naso-diaphragmatic breathing on the Swiss Ball were carried out for body posture realignment and respiratory training. Nineteen mouth breathing children, mean age of 10.6 years, both genres, were the subjects of this study. In order to establish a comparison between the eletromyographic results (normalized values) obtained from pre and post-physical therapy program it was used the Wilcoxon non-parametric test for dependent data. RESULTS: It was found a significant decrease (p<0.01) in the electromyographic activity during nasal inspiration in all tested muscles after treatment (11.3-3.6% in the SCM, 22.4-11.7% in the sub-occipitals and 8.9-3.1% in the upper Trapezius). At the end of the treatment, the assessed muscles reached lower activity electromyographic levels during nasal inspiration and they became closer of those in the quiet position. CONCLUSION: The lower activity after the physical therapy program in these muscles indicates a less effort of the accessory inspiratory muscles, probably due to a better performance of diaphragm muscle with the improvement of the body posture.
OBJECTIVE: This study aimed to evaluate the recruitment of cervical muscles during nasal inspiration before and after breathing and postural exercises on the Swiss Ball in children with Mouth Breathing Syndrome (MBS). METHOD: Surface electromyography from the sternocleidomastoid (SCM), sub-occipitals and upper Trapezius muscles was recorded during nasal inspiration, before and at the end of three months of the treatment. A physical therapy program consisting in muscular stretching and strengthening exercises along with naso-diaphragmatic breathing on the Swiss Ball were carried out for body posture realignment and respiratory training. Nineteen mouth breathing children, mean age of 10.6 years, both genres, were the subjects of this study. In order to establish a comparison between the eletromyographic results (normalized values) obtained from pre and post-physical therapy program it was used the Wilcoxon non-parametric test for dependent data. RESULTS: It was found a significant decrease (p<0.01) in the electromyographic activity during nasal inspiration in all tested muscles after treatment (11.3-3.6% in the SCM, 22.4-11.7% in the sub-occipitals and 8.9-3.1% in the upper Trapezius). At the end of the treatment, the assessed muscles reached lower activity electromyographic levels during nasal inspiration and they became closer of those in the quiet position. CONCLUSION: The lower activity after the physical therapy program in these muscles indicates a less effort of the accessory inspiratory muscles, probably due to a better performance of diaphragm muscle with the improvement of the body posture.