The immediate effects of muscle energy technique on posterior shoulder tightness: A randomized controlled trial

61 asymptomatic baseball players, who were chosen because they were "overhead" athletes at risk for shoulder tightness and loss of range of motion, were randomized to receive either muscle energy technique (MET) for glenohumeral joint (GHJ) horizontal abductors, MET for GHJ external rotators, or control (no intervention). This randomization was done to determine which approach would yield the most improvements with respect to GHJ range of motion. The post-intervention results indicate MET application for GHJ horizontal abductors can improve range of motion.