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Your rotator cuffs stabilises your head of humerus in the glenoid cavity. When doing that exercise, all the RCs got to work to make sure the head of humerus is centred in the socket. There needs to be a balance in the force coming from all the RCs. I’ll list the muscles used in concentric phase of movement: Step 1-2: Scapula retractors Step 3: External ...


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Jeremy Either (the guy in the pictures) isn't the most knowleable and trustworthy when it comes to human anatomy, but to his excuse when people talk about the rotator cuff they only mention it in two distinct occasions: Strenghtening the rotator cuff = only external rotators exist Injured rotator cuff = only internal rotators are the cause It's a common ...


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