Exercise movement reviewed by:Cody Lockling, MS, CSCS

How Iridium Programs This

Iridium classifies this as a glute-dominant accessory used to fill volume requirements when your 7-day history indicates your knees or ankles need reduced loading. Because the barbell placement still generates axial fatigue, the system checks your erector spinae recovery status to ensure this lift doesn't interfere with your primary squats or deadlifts. Progression is managed via RPE trends to keep the intensity focused on hypertrophy rather than testing maximum strength.

Form Cues

Kneel on a soft pad with shins flat and toes untucked
Brace your core tightly before un-racking the bar
Sit your hips back toward your heels to initiate the descent
Squeeze your glutes hard to drive your hips forward to the starting position
Keep your spine neutral and chest up throughout the rep

Don't

Don't hyperextend your lower back at the top of the movement
Don't allow your head to jut forward or look down excessively
Don't let your core relax at the bottom of the movement
Don't use momentum or bounce off your calves to get back up

Common Mistakes

Overarching the lower back at lockout
Using insufficient padding for the knees
Failing to fully extend the hips
Rounding the shoulders forward
Initiating with a lean rather than a hinge

Muscles Worked

This exercise primarily targets the gluteus maximus, forcing them to work hard to extend the hips from a flexed position without the assistance of the ankles or calves. The quadriceps act as stabilizers and movers to maintain the kneeling position, while the core and erector spinae work significantly to stabilize the spine under the axial load of the barbell.