Pendulum Squat (Machine)
The Pendulum Squat is a machine-based lower body exercise that targets the quadriceps, glutes, and hamstrings through a fixed, arcing range of motion. It mimics the mechanics of a deep barbell squat while providing significant back support to minimize spinal loading.
Iridium uses the high stability of the Pendulum Squat to program intensity (RPE) closer to failure while minimizing the systemic fatigue associated with free weights. If your 7-day history indicates recent spinal loading, Iridium selects this exercise to ensure you hit your Maximum Adaptive Volume for the quads without overtraining your lower back.
Form Cues
- Place your feet shoulder-width apart on the platform
- Keep your lower back pressed firmly against the back pad
- Lower yourself until your thighs are at least parallel to the footplate
- Drive through your midfoot to extend your legs
- Keep your chest up and core braced throughout the movement
- Don't let your heels lift off the platform at the bottom
- Don't allow your knees to cave inward during the drive
- Don't lock your knees aggressively at the top of the movement
- Don't round your lower back or lose contact with the pad
- Don't drop into the bottom position without controlling the weight
Common Mistakes
- Placing feet too high or too low
- Cutting the depth short
- Lifting heels off the platform
- Locking knees at the top
- Using momentum to bounce out of the hole
Muscles Worked
The Pendulum Squat primarily isolates the quadriceps, placing significant tension on the vastus medialis (teardrop muscle) due to the deep knee flexion the machine allows. It also heavily recruits the glutes and hamstrings to assist in hip extension as you drive out of the bottom position, providing complete leg development with less spinal compression than a barbell squat.
Primary
Secondary
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