The Zercher squat variation is known for showing the highest EMG activity in which muscle group?

The Zercher squat is a unique variation of the squat that involves holding the barbell in the crook of the elbows while performing the movement. This specific positioning alters the mechanics of the squat and places a significant demand on various muscle groups, most notably the glutes.

When performing the Zercher squat, the hip hinge mechanics are emphasized, which results in a greater recruitment of the gluteal muscles as they are responsible for hip extension during the upward phase of the squat. The nature of the exercise, with the load positioned at the front of the body, also requires the glutes to work harder to stabilize the pelvis and maintain proper alignment throughout the movement.

In contrast, while the quadriceps, hamstrings, and calves are all engaged to some extent during the squat, the distinct emphasis on the posterior chain—particularly the glutes—is what sets the Zercher squat apart from other squat variations. This focus on glute activation makes it particularly beneficial for developing strength and size in that muscle group. Therefore, the highest EMG activity observed during the Zercher squat is attributed to the glutes.