Smith Machine Stiff-Leg Deadlift — start position
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Smith Machine Stiff-Leg Deadlift — end position
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Legs / Intermediate / Compound (multi-joint)

Smith Machine Stiff-Leg Deadlift

A hip hinge with nearly straight legs on a Smith machine that targets the hamstrings, glutes and lower back.

At a glance

Primary
Hamstrings, Glutes, Lower back (erectors)
Secondary
Forearms & grip, Upper back (rhomboids, mid/lower traps)
Equipment
Smith machine
Movement pattern
Hip hinge, Hip extension
Level
Intermediate
Type
Legs, Compound (multi-joint)

Loads the lower back. Use a load you can control and skip it if it causes pain.

How to do it

  1. Stand in a Smith machine with feet hip-width apart and grip the bar just outside your thighs with an overhand grip.
  2. Unrack the bar and stand tall with a slight bend in your knees.
  3. Hinge at the hips, pushing them back and lowering the bar along your legs until you feel a strong hamstring stretch.
  4. Drive your hips forward to return to standing.

Tips

  • Keep your back flat throughout.
  • Keep the knee angle nearly fixed.

Common mistakes

  • ✗ Chasing depth by rounding the back.

    Why it hurts: Once the hamstrings run out of length, going lower comes from spinal flexion, which strains the lower back.

    ✓ Instead: Push the hips back and stop when they stop moving back, usually just below the knee.

  • ✗ Squatting the weight down by bending the knees a lot.

    Why it hurts: It turns the exercise into a sloppy squat and takes the load off the hamstrings.

    ✓ Instead: Set a soft knee bend at the start and keep that angle while the hips move.

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Muscles worked

Neck (Front)Upper traps (Front)Front delts (Front)Side delts (Front)Chest (Front)Serratus anterior (Front)Biceps (Front)Forearms & grip — secondary (Front)Abs (Front)Obliques (Front)Hip flexors (Front)Quads (Front)Adductors (Front)Shins (tibialis) (Front)Calves (Front)Outer shins (peroneals) (Front)Feet (arch & toes) (Front)Neck (Back)Upper traps (Back)Upper back (rhomboids, mid/lower traps) — secondary (Back)Rear delts (Back)Side delts (Back)Rotator cuff (Back)Lats (Back)Lower back (erectors) — primary (Back)Triceps (Back)Forearms & grip — secondary (Back)Hip abductors (glute med) (Back)Glutes — primary (Back)Hamstrings — primary (Back)Adductors (Back)Calves (Back)
FrontBack
  • Primary: Hamstrings, Glutes, Lower back (erectors)
  • Secondary: Forearms & grip, Upper back (rhomboids, mid/lower traps)

Best for

How specific this exercise is to each movement.

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Illustration: Everkinetic (everkinetic.com), CC BY-SA 4.0.