Fig. 1From: Acceleration sensors in abdominal wall position as a non-invasive approach to detect early breathing alterations induced by intolerance of increased airway resistanceElectrode positions: Electrode 1 and 2 at the third intercostal space in the medio-clavicular line, Electrode 4 supra-umbilical in the median line and Electrode 3 and 5 bilaterally infra-umbilical next to the rectus abdominis muscle. All sensors recorded movements in three dimensions (x, y, z axis)Back to article page