The sample size and power calculations is performed with the sample size calculator (InStat). The calculations is based on a standard deviation of 0.5 points, the minimal clinically important difference (MCID) for Pectoralis Minor Index of 0.89 points, an alpha level of 0.05, a β level of 5%, and a desired power of 95%. These parameters generate a sample size of at least 9 participants for each group. Total of 40 subjects will be recruited into the study in order to allow for a loss to follow-up.