Assisted Pistol Squat (TRX)

SquatTRX

Single-leg squat with the free leg extended forward, using TRX straps for counterbalance and assistance. The most accessible entry point into true pistol squat mechanics.

Demo: Exercise Tutorial

Sets

3

Reps

5-8 per side

Rest

1:15

Contraindications

High single-leg ankle and knee flexion demand — regress assistance level if pain occurs.

Setup

Hold TRX handles at chest height, stand on one leg with the other extended forward off the ground.

Execution

  1. 1Extend the non-working leg straight out in front
  2. 2Lower slowly using the TRX for balance/assistance
  3. 3Descend as low as controlled mobility allows
  4. 4Use minimal arm pull — let the legs do the work
  5. 5Drive back up to standing

Key cues

  • Extended leg stays off the floor throughout
  • Use the straps for balance, not to pull yourself up
  • Chest up, sit down between the hips
  • Control the descent
  • Push through the whole working foot

Common faults

  • Over-relying on arm pull instead of leg strength
  • Extended leg touching the ground
  • Heel lifting off the floor on the working leg
  • Losing balance and falling to the side
  • Rushing the descent

Tweaks

  • Reduce assistance from the straps as strength improves
  • Try holding a rack or doorframe instead of TRX
  • Progress to a box pistol squat next

Progressions

Box Pistol SquatPistol Squat - Full

Muscles

Primary: Quadriceps, Gluteus Maximus

Secondary: Hip Flexors, Core, Ankles

Notes

The TRX-assisted variation lets lifters practice full pistol range of motion safely before removing external support.

Sources

Attribution: Squat University / Dr. Aaron Horschig