Smith Stiff Leg Deadlift
The Smith Stiff Leg Deadlift primarily works the Erector Spinae, Gluteus Maximus, with secondary activation of the Adductor Magnus, Biceps Femoris (Long Head), Erector Spinae, Gluteus Maximus and stabilizer support from the External Obliques, Latissimus Dorsi, Levator Scapulae, Rectus Abdominis, Rectus Femoris, Rhomboids, Trapezius (Lower), Trapezius (Middle), Trapezius (Upper). It is a smith machine compound exercise at beginner difficulty.
The Smith Stiff Leg Deadlift is a beginner compound exercise performed with smith machine, following a hinge movement pattern. It primarily targets the Erector Spinae, Gluteus Maximus, with secondary engagement of the Adductor Magnus, Biceps Femoris (Long Head), Erector Spinae, Gluteus Maximus. This is a bilateral pulling movement, engaging both sides of the body simultaneously.
A smith machine compound pull exercise targeting the Erector Spinae and Gluteus Maximus.
| Equipment | Smith Machine |
|---|---|
| Difficulty | Beginner |
| Type | Compound |
| Movement | Hinge |
| Force | Pull |
| Laterality | Bilateral |
| Primary | Erector Spinae, Gluteus Maximus |
| Secondary | Adductor Magnus, Biceps Femoris (Long Head), Erector Spinae, Gluteus Maximus |
Muscles Worked
The Erector Spinae, and Gluteus Maximus are the primary movers, collectively driving the movement and absorbing the greatest share of the load. The Adductor Magnus, Biceps Femoris (Long Head), Erector Spinae, and Gluteus Maximus act as secondary movers, assisting the primary muscles and contributing meaningfully to the overall output. The External Obliques, Latissimus Dorsi, Levator Scapulae, and 6 other muscles act as stabilizers, maintaining joint position and postural alignment throughout the movement.
Primary Muscles
- Primary Muscle Erector Spinae (back)
- Primary Muscle Gluteus Maximus (glutes)
Secondary Muscles
- Secondary Muscle Adductor Magnus (adductors)
- Secondary Muscle Biceps Femoris (Long Head) (hamstrings)
- Secondary Muscle Erector Spinae (back)
- Secondary Muscle Gluteus Maximus (glutes)
Stabilizer Muscles
- Stabilizer Muscle External Obliques (core)
- Stabilizer Muscle Latissimus Dorsi (back)
- Stabilizer Muscle Levator Scapulae (neck)
- Stabilizer Muscle Rectus Abdominis (core)
- Stabilizer Muscle Rectus Femoris (quadriceps)
- Stabilizer Muscle Rhomboids (back)
- Stabilizer Muscle Trapezius (Lower) (back)
- Stabilizer Muscle Trapezius (Middle) (back)
- Stabilizer Muscle Trapezius (Upper) (back)
How to Perform
Preparation
- Stand with shoulder width or narrower stance on elevated platform with thigh against bar.
- Grasp bar with shoulder width or slightly wider overhand grip.
- Disengage bar by rotating bar back.
Execution
- With knees slightly bent, lower bar toward top of feet by bending hips.
- Keep waist straight, flexing only slightly at bottom.
- Lift bar by extending at hips until standing upright.
- Pull shoulders back slightly if rounded.
- Extend knees at top if desired.
- Repeat.
Comments
- Lower back may bend slightly during full hip flexion.
- Erector Spinae is exercisedisometricallyif low back does not articulate as withStraight Back Stiff Leg Deadlift(targeting Glutes).
- Begin with light weight and add additional weight gradually to allow adequateadaptation.
- Throughout lift, keep arms straight.
- Do not pause or bounce at bottom of lift.
Tips & Common Mistakes
- Drive your hips back rather than squatting down — the hinge is a hip-dominant movement.
- Maintain a flat, neutral spine from head to tailbone throughout every rep.
- You should feel a hamstring stretch at the bottom — that's the target muscle loading up.
Programming Suggestions
Adapt your sets and reps to your training goal. As a beginner-friendly exercise, start with lighter loads and focus on form before progressing weight.
| Strength | 3–5 sets × 3–6 reps at 80–90% 1RM with 2–4 minutes rest. |
|---|---|
| Hypertrophy | 3–5 sets × 6–12 reps at 65–80% 1RM with 60–120 seconds rest. |
| Endurance | 2–4 sets × 15–20 reps at 50–65% 1RM with 30–60 seconds rest. |
Alternative Exercises
These exercises target the same primary muscles (Erector Spinae, Gluteus Maximus) and can be substituted based on your equipment or variation preferences.
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