Muscles / Shoulders

Posterior deltoid

• Shoulders
• Shoulder & scapula
• Superficial layer

Also called spinal part of deltoid.

Part of Deltoid.

Exercises that train it most

• Standing band back fly

Also trained by

• Side-lying external rotation
• Standing external rotation with band (0° abduction)
• Prone horizontal abduction with external rotation ("T")
• Prone arm raise overhead ("Y")
• Prone shoulder extension
• Cross-body stretch
• Lat pull-down
• Seated row with a band
• Thread the needle