Romanian Deadlift vs Stiff-Leg Deadlift: Hamstring Exercise Guide

The Romanian deadlift and stiff-leg deadlift are often confused but have important differences. Understanding these distinctions helps you choose the right exercise for your goals.

Romanian Deadlift

Difficulty
intermediate
Equipment

Barbell or dumbbells

Muscles Worked
HamstringsGlutesLower backCore

Stiff-Leg Deadlift

Difficulty
intermediate
Equipment

Barbell or dumbbells

Muscles Worked
HamstringsLower backGlutes

Head-to-Head Comparison

CategoryRomanian DeadliftStiff-Leg Deadlift
Strength Potential
8/10
7/10
Muscle Building
9/10
8/10
Convenience
8/10
8/10

Muscles Worked

Both target hamstrings, but RDLs keep more constant tension. Stiff-leg emphasizes the stretch.

Difficulty

RDLs are slightly easier to perform safely. Stiff-leg deadlifts require more hamstring flexibility.

Equipment

Same equipment needs - both are versatile.

Strength Building

RDLs allow heavier loading due to the knee bend and more favorable leverages.

When to Use Each Exercise

Use Romanian Deadlift When...

  • Primary hamstring builder
  • Deadlift accessory work
  • When you want to go heavier
  • General posterior chain development

Use Stiff-Leg Deadlift When...

  • Emphasizing hamstring stretch
  • When flexibility allows deep ROM
  • Variation from RDLs
  • Deficit deadlift variations

Can You Do Both?

Use RDLs as your primary hamstring hinge movement. Stiff-leg deadlifts can be used as a variation or for different stimulus.

The Verdict

Romanian deadlifts are generally superior due to constant tension and easier execution. Stiff-leg deadlifts are a valid variation for those with good flexibility. RDLs should be the primary choice for most people.

Frequently Asked Questions

What is the main difference between RDL and stiff-leg?
RDLs maintain a slight knee bend and start from standing. Stiff-leg deadlifts have straighter legs and often start from the floor, emphasizing hamstring stretch.
Which is better for hamstring growth?
RDLs are generally better due to constant tension throughout the movement. They allow heavier loading while maintaining hamstring emphasis.
How low should I go on RDLs?
Go until you feel a strong hamstring stretch, typically mid-shin. Do not go so low that your lower back rounds.

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