Squat

Pendulum squat

What it works

Works

Quads

Also works

Glutes

Equipment

Machine

How to do it

  1. Rest your back and shoulders against the pads of the pendulum machine.
  2. Place your feet on the platform shoulder-width apart with weight on the midfoot.
  3. Release the safety catches and hold the load with your legs nearly extended.
  4. Lower by bending hips and knees, following the machine's arc under control.
  5. Descend until your thighs are at least parallel to the floor without lifting your heels.
  6. Drive through your whole foot to stand, extending the legs without locking the knees.

Common mistakes

  • Letting the heels lift off the platform on the descent
  • Bouncing at the bottom instead of a controlled pause
  • Knees caving inward on the way up

What the evidence says

Over 10 weeks with MRI measurement, full squats grew the gluteus maximus and adductors about three times more than half squats, with the same quadriceps growth. And only the full-squat group got stronger at both depths.

Kubo K, Ikebukuro T, Yata H. «Effects of squat training with different depths on lower limb muscle volumes». European Journal of Applied Physiology, 2019;119(9):1933-1942. View the study

Stopping at a quarter squat doesn't spread the stimulus evenly across the quads either: going down to 120° of knee flexion grew it along its whole length (~6%), while stopping at 60° grew it at only 2 of 6 measured sites.

Bloomquist K, Langberg H, Karlsen S, Madsgaard S, Boesen M, Raastad T. «Effect of range of motion in heavy load squatting on muscle and tendon adaptations». European Journal of Applied Physiology, 2013;113(8):2133-2142. View the study

The front squat isn't a watered-down version: it recruits muscle as much as the back squat with lower compressive force at the knee, even though you move less weight.

Gullett JC, Tillman MD, Gutierrez GM, Chow JW. «A Biomechanical Comparison of Back and Front Squats in Healthy Trained Individuals». Journal of Strength and Conditioning Research, 2009;23(1):284-292. View the study

What isn't settled: Nobody has measured where the point of diminishing returns is. The studies compare extremes (full vs half, half vs quarter) over 10 to 12 weeks in people without years of squatting behind them; how much extra depth suits your hips and ankles isn't measured.

Other variations

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