Sled Gripless Shrug
Muscles
Target
Trapezius, Upper
Synergists
Trapezius, Middle
Levator Scapulae
Stabilizers
Erector Spinae
Instructions
Preparation
Stand with shoulders under padded bar.
Execution
Elevate shoulders as high as possible. Lower and repeat.
Comments
Since this movement becomes more difficult as full shoulder elevation is achieved, a height criteria for shoulder elevation may be needed. For example, raising the shoulders until the slope of the shoulders become horizontal may be considered adequate depending upon individual body structure.
Source: exrx.net