This study aims to compare the effects of blood flow restricted (BFR) exercise and to examine the differences between various BFR protocols on acute pain reduction in individuals with rotator cuff-related shoulder pain, as well as the exercise tolerance at each intensity and occlusion setting. There are four exercise modalities corresponding to different combinations of intensity (%RM) and percentage of occlusion (%AOP): 1) 30% RM and 30% AOP; 2) 30% RM and 50% AOP; 3) 30% RM and 70% AOP; 4) 30% RM and BFR placebo (cuff without pressure).
All participants will complete one session of each of the four exercise modalities, analyzing the variables studied in each for subsequent analysis and comparison.
Age between 18 and 65
Shoulder symptoms lasting at least 3 months
Pain in the proximal anterolateral aspect of the shoulder, aggravated by abduction
At least two of the following tests positive: Jobe test, resisted external rotation test, Hawkins-Kennedy test, Neer test, painful arc between 60 and 120 degrees of shoulder abduction
History of shoulder trauma or surgery
Pain of such intensity that it is impossible to perform the proposed exercises
Active arm elevation less than 90 degrees
Clinical signs of a complete tear (positive delayed external and internal rotation sign and positive arm drop test)