Pull-down exercises and the subacromial space

What happens to acromio-humeral distance with isometric pull-down exercises?

The smallest distance between the acromion and the humeral head is called the acromio-humeral distance (AHD).

Past studies have found that compared to healthy individuals, patients with subacromial pathology, there is a reduction in AHD of 1.9 mm and 2.1mm with those that have rotator cuff tears and rotator cuff dysfunction, respectively.

Hence, for this study, the authors set a 2 mm change post intervention as clinically relevant.


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