Which muscle is primarily engaged when pulling under the bar during the Snatch?

The muscle primarily engaged when pulling under the bar during the Snatch is the trapezius. The trapezius plays a critical role in stabilizing and elevating the shoulders, which is essential during the transition phase of the Snatch when an athlete pulls under the bar. As the weight is lifted overhead, the trapezius helps maintain proper shoulder positioning, which is crucial for effectively receiving the barbell in a secure and balanced position.

During the movement, the upper portion of the trapezius is particularly active, aiding in scapular elevation and retraction, thus contributing to the overall stability needed to manage heavy weights overhead. This engagement allows the lifter to transition smoothly from the pulling phase to the receiving phase of the lift. Understanding the role of the trapezius not only helps in proper technique but also aids in reducing the risk of injury by ensuring that the shoulders are properly activated and positioned throughout the lift.