Journal of Sleep Disorders & Therapy
Open Access

The influence of body position on the electro-myographic activity of obligatory and accessory respiratory muscles in subjects with different breathing typ

Annual Summit on Sleep Disorders & Medicine

August 10-12, 2015 San Francisco, USA

Rodolfo Miralles, Ricardo Bull and Saul Valenzuela

University of Chile, Chile

Posters-Accepted Abstracts: J Sleep Disord Ther

Abstract :

Effect of body position on electro-myographic activity has been studied in the cranio-cervical-mandibular muscles, but its effect on the activity of respiratory muscles in subjects with different breathing types has not yet been elucidated. This study included two groups of twenty male subjects each, one with upper costal and the other with costo-diaphragmatic breathing types. Electromyographic activity was recorded using bipolar surface electrode technic. Electrodes were placed on the sternocleidomastoid, diaphragm, external intercostal and Latissimus dorsi muscles. Electromyographic activity was recorded in standing and lateral decubitus positions, during the following tasks: [1] Normal quiet breathing; [2] speaking the word â�?�?Mississippiâ�?; [3] forced deep breathing. Electromyographic activity of the diaphragm and external intercostal muscles was higher during standing than in the lateral decubitus position, in both breathing types. Electromyographic activity of the diaphragm was significantly higher in subjects with upper costal than in subjects with costo-diaphragmatic breathing type in the standing position during all tasks and also in the lateral decubitus position during tasks 1 and 2 (P<0.05). Electromyographic activity of sternocleidomastoid, external intercostal and Latissimus dorsi muscles was similar in both breathing types at any body position (P>0.05). The higher electromyographic activity observed in the standing than in the lateral decubitus positions, in both breathing groups, suggests differences in the respiratory effort depending on the body position. The higher electromyographic activity observed in the diaphragm of subjects with upper costal than costo-diaphragmatic breathing types, suggests differences in the respiratory effort depending on the breathing type.

Biography :

Email: rodolfomiralles@gmail.com