The relationship of torso angle and glenohumeral muscle activation

Current literature provides evidence that moving adjacent body segments can alter muscle activity, but there is a gap on the effects at the glenohumeral joint. The purpose of this study is to investigate differences in glenohumeral muscle activation elicited by altering torso angle during shoulder flexion. Pilot electromyography (EMG) data from a single, healthy subject were collected from the supraspinatus during shoulder flexion while the subjected was strapped to a tilt table at 0° and 90°. While muscle activation changed with the angle of the tilt table, there are currently insufficient data to attempt to draw any conclusions. Data collection and analysis are ongoing.