Picture 2: The anterior deltoid muscle (red) starts on the outer aspect of the collarbone while the posterior deltoid (blue) starts at the ridge of the shoulder blade. Both join to attach to the upper arm. (image from Wikipedia)
When it comes to applying kinesiology tape, our preferred method is the second – to apply a strip to both the anterior and posterior deltoid, overlapping the finishing ends at the insertion point of the upper arm. This method gives the sensation of “hugging” the shoulder joint with tape.
1. Lyman K, et al. Effects of 3 Different Elastic Therapeutic Taping Methods on the Subacromial Joint Space, Journal of Manipulative and Physiological Therapeutics, Sept 2017 (http://www.jmptonline.org/article/S0161-4754(16)30143-9/abstract)