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Hack Squat (Facing Out)

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Intermediate

Machine-based compound movement that targets the quads and glutes to build lower body mass; provides spinal support by stabilizing the back against a pad.

About Exercise

Equipment

Hack Squat Machine, Plates

Difficulty

2/5 • Intermediate

Primary Muscle Groups

Quads, Glutes

Secondary Muscles

Hamstrings, Adductors, Calves, Abs

Popularity Score

8

Goals

Strength
Hypertrophy

Training Style

Bodybuilding
Powerlifting

Setup Requirements

Requires Rack

No

Requires Bench

No

Requires Spotter

No

Space Needed

Medium

Noise Level

Low

Muscle Breakdown

Quads

10/10

Rectus Femoris, Vastus Lateralis, Vastus Medialis

Glutes

8/10

Glute Max

Hamstrings

5/10

Biceps Femoris

Adductors

4/10

Calves

3/10

Abs

3/10
Programming

Typical Rep Range

8-15 reps

Rest Between Sets

60-120 seconds

How to Perform

Load the machine with plates. Step onto the platform, placing your back flat against the backrest and shoulders securely under the pads, with feet shoulder-width apart.

  1. Disengage the safety handles and extend your legs to support the weight.
  2. Inhale and lower the sled by bending knees and hips until thighs are at least parallel to the platform.
  3. Drive through your whole foot to extend the legs and return to the starting position.
  4. Exhale near the top of the movement, keeping a slight bend in the knees.

Coaching Tips

Form Cues

  • Back flat against pad
  • Knees track over toes
  • Drive through feet
  • Control the descent

Breathing

Inhale deeply before lowering; exhale forcefully while driving the weight up.

Tempo

3-1-1

Range of Motion

Lower until thighs are parallel to the footplate or deeper; extend fully without locking knees.

Safety

Safety Notes

  • Ensure safety stops are set correctly
  • Do not lock knees aggressively
  • Keep lower back pressed against the pad

Spotting

Not recommended; rely on the machine's safety stops.

Common Mistakes

  • Heels lifting off platform
  • Knees caving inward
  • Locking knees at top
  • Shortening range of motion

When to Avoid

  • Acute knee injuries
  • Severe lower back pain
  • Uncontrolled hypertension

Flexibility Needed

  • Adequate ankle dorsiflexion
  • Hip flexion mobility

Build Up First

  • Basic squat pattern knowledge
  • Core bracing technique

Also known as

Machine Hack Squat, 45-Degree Hack Squat, Sled Hack Squat

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