This clinical study investigates whether contralateral training (exercising the non-immobilized arm) can help preserve muscle strength and mass in patients recovering from shoulder surgery with elbow immobilization. Immobilization is often necessary to prevent further injury, but it can lead to significant muscle loss and reduced strength, delaying recovery and increasing healthcare costs. Recent studies suggest that training the non-immobilized arm may help maintain muscle function in the immobilized arm, particularly when using eccentric exercises (where muscles lengthen under tension). This study aims to compare the effects of eccentric and concentric (shortening) contralateral training versus standard care (no training) in patients undergoing shoulder surgery. The study involves 4 visits: pre-surgery assessments, a 4-6 weeks' immobilization period with or without training, and follow-ups at the end of immobilization, 6 weeks' post-immobilization, and 17 weeks' post-immobilization. Participants will be randomly assigned to one of three groups: a control group receiving standard care, a group performing eccentric training, or a group performing concentric training. Muscle strength, mass, and function will be measured using tests such as isometric strength, ultrasound imaging, and functional scores. The hypothesis is that eccentric contralateral training will better preserve neuromuscular function and muscle mass in the immobilized arm compared to both standard care and concentric training. This could lead to faster recovery and improved outcomes for patients. The study will provide valuable insights into optimizing rehabilitation strategies for patients recovering from shoulder surgery.
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Isometric maximal voluntary strength of the immobilized arm
Timeframe: Preoperatively and at the end of the 4-6 weeks immobilization period