2. Patients suffering from shoulder pain, defined as pain presented or exacerbated by movements in the shoulder, pain intensity = 2 measured by a numerical scale with values from 0 to 10, meaning 0= no pain and 10= the worst pain, will be included in this study, among all these following shoulder pain conditions: (i) rotator cuff (RC) tendinopathy ; (ii) adhesive capsulitis (AC) ; (iii) glenohumeral instability ; (iv) SLAP lesion; (v) and/or acromioclavicular pathology. Subjects will not be required to undergo diagnostic imaging (i.e MRI) to diagnosis the pathology because of the recruitment will be carried out by clinical findings.