Posterior Deltoid

Some articles on posterior deltoid:

Rear Delt Raise - Transverse Forms
... Movements for the posterior deltoid done in the transverse plane are also referred to by terms like rear delt fly, reverse fly, rear lateral raise, bent-over lateral raises or other variations ... Other muscles that aid the posterior deltoid include the two lateral rotators of the rotor cuff the infraspinatus and teres minor ... scapulae and hold them there, as opposed to letting them protract, to get a better stretch in the posterior deltoid ...
Fly (exercise) - Equipment - Inverted Fly
... as a bent-over lateral raise, reverse fly or rear delt fly) works the posterior deltoid ... In terms of glenohumeral movement, the posterior deltoid does not work alone, and is assisted by other muscles ... pointing outward then towards the scapulae as they lift) the posterior deltoid will be assisted in this transverse extension by the lateral rotators of the rotor cuff the infraspinatus ...