The Romanian deadlift, commonly referred to as the RDL, is one of the most effective exercises you can do for building hamstring strength, improving hip hinge mechanics, and developing the posterior chain muscles that protect the lower back. It is also one of the most commonly performed incorrectly.
This guide covers exactly how to do an RDL with precise form cues, the most common mistakes and how to fix them, and how to programme it for results regardless of your experience level.
What Is the RDL and How Is It Different From a Conventional Deadlift
The RDL and the conventional deadlift are both hip hinge movements, but they are not the same exercise and should not be treated as interchangeable.
In a conventional deadlift, the bar starts from the floor. The knees bend significantly, the hips drop, and the movement involves both the quads and the posterior chain working together to lift the weight from a dead stop.
In an RDL, the weight starts from a standing position and is lowered toward the floor by hinging at the hips. The knees maintain a soft, slight bend throughout but do not drive forward. The movement is dominated by the hamstrings and glutes rather than the quads, and the bar or dumbbells do not touch the floor between repetitions.
The RDL trains the hamstrings through their lengthening phase, which is known as an eccentric contraction. This is precisely why it is so effective for building hamstring strength and why it transfers so well to running, jumping, and lower back health.
Muscles Worked by the RDL
Primary muscles:
- Hamstrings (all three heads: biceps femoris, semimembranosus, semitendinosus)
- Gluteus maximus
Secondary muscles:
- Erector spinae (lower back stabilisers)
- Adductor magnus (inner thigh, which assists hip extension)
- Core stabilisers
Supporting muscles:
- Forearms and grip (particularly with a barbell)
- Trapezius and rhomboids (upper back, for maintaining a neutral spine)
Equipment Options for the RDL
The RDL can be performed with several different types of equipment. The movement pattern is the same regardless of what you use.
Barbell: The most common option in gym settings. Allows the heaviest loading and is ideal for those focused on strength development. Requires good grip strength and spinal awareness.
Dumbbells: More accessible and easier to learn with. The independent loading of each hand also makes it slightly easier to maintain symmetry and feel the movement correctly. A good starting point for beginners.
Kettlebells: Similar to dumbbells but the offset centre of mass creates a slightly different feel. Some people find kettlebells easier to keep close to the body during the movement.
Resistance band: Excellent for beginners, warm-ups, and rehabilitation. The band provides accommodating resistance, meaning the load increases as you stand up, which matches the strength curve of the hip hinge well.
Single leg (bodyweight or loaded): An advanced variation that dramatically increases the demand on balance, hip stability, and unilateral hamstring strength.
How to Do an RDL: Step-by-Step Instructions
The following instructions are for a dumbbell RDL, which is the recommended starting point for most people. The cues apply equally to a barbell version.
Setup:
- Stand with feet hip-width apart, toes pointing forward or very slightly out
- Hold a dumbbell in each hand in front of your thighs, palms facing your body
- Stand tall with your shoulders pulled back and down
- Take a deep breath into your belly and brace your core firmly before each rep
The descent:
- Push your hips backward as if trying to touch a wall that is 30 centimetres behind you
- As your hips move back, let your torso lean forward naturally
- Keep the dumbbells close to your legs throughout, they should almost brush your shins
- Maintain a neutral spine from your tailbone to the back of your head, no rounding at the lower back and no excessive arch
- Keep a soft bend in the knees throughout, this bend does not increase as you lower
- Lower until you feel a strong stretch in your hamstrings, typically when the weights reach mid-shin level for most people
- Your hips should be higher than your knees at the bottom
The ascent:
- Drive your hips forward and back to the starting position
- Think of squeezing your glutes to finish the movement as you reach the top
- Do not hyperextend your lower back at the top, stand tall and neutral
- Exhale as you drive back to standing
- Reset your breath and brace before the next repetition
Key Form Cues That Make the Difference
Hips back, not down. The most important distinction between an RDL and a squat is the direction of the hip movement. In an RDL, the hips move backward. In a squat, they move downward. If your knees are bending significantly as you lower, you have turned the RDL into a squat.
Keep the bar or dumbbells close. The weight should travel in a straight vertical line, staying as close to your legs as possible throughout. The further the weight drifts from your body, the greater the lever arm and the more stress on your lower back.
Neutral spine at all times. Neither rounded nor hyperextended. A useful cue is to think of maintaining a “proud chest” throughout the descent. If your upper back rounds, the weight is too heavy or your thoracic mobility is limiting you.
The stretch is the signal to stop. Your range of motion in the RDL is determined by your hamstring flexibility, not by how far you can lower the weight. When you feel a strong stretch in the hamstrings and cannot lower further without rounding your back, that is your stopping point. This will improve over time as flexibility increases.
Drive the hips, not the chest. On the way up, the cue is to push the hips forward rather than lifting the chest up. Lifting the chest first causes the lower back to extend before the hips are fully through, which creates unnecessary spinal stress.
Common RDL Mistakes and How to Fix Them
Rounding the lower back This is the most common and most risky mistake. It usually happens because the weight is too heavy, the hamstrings are too tight to reach the desired depth with a neutral spine, or the core is not braced properly.
Fix: Reduce the weight, limit your range of motion to what you can achieve with a neutral spine, and focus on bracing your core fully before each rep. Depth will increase naturally as hamstring flexibility improves.
Bending the knees too much When the knees bend excessively during the RDL, it shifts the demand away from the hamstrings and toward the quads, essentially turning the movement into a squat.
Fix: Think of the knee bend as locked in at the start. The knees should have a slight, soft bend that does not change throughout the entire movement.
Letting the weight drift forward When the bar or dumbbells drift away from the body, the lower back works significantly harder to control the load.
Fix: Think of keeping the weights in contact with or just brushing your legs the entire way down. With a barbell, this means the bar should track up the shins and thighs throughout.
Not hinging deep enough Some people perform a very shallow RDL, barely lowering the weight before standing back up. This significantly reduces the hamstring training stimulus.
Fix: Focus on the hip push backward. The further back the hips go, the lower the torso and the more the hamstrings lengthen. Aim to feel a genuine stretch in the hamstrings at the bottom of each rep.
Hyperextending at the top Finishing the rep by leaning backward or overarching the lower back at the top is a common error that compresses the lumbar spine.
Fix: Finish each rep standing tall and neutral. Squeeze the glutes to complete the hip extension without pushing the hips forward past neutral.
Jerking the weight up Starting each rep with a jerk rather than a controlled drive is a sign the weight is too heavy and reduces the effectiveness of the exercise.
Fix: Control the descent for 2 to 3 seconds, pause briefly at the bottom, then drive up with intention. Remove weight if you cannot maintain this tempo.
Tempo and Programming Guidance
The RDL is most effective when performed with a controlled tempo that emphasises the eccentric (lowering) phase.
Recommended tempo: 3 seconds down, 1 second pause at the bottom, 1 to 2 seconds up.
For strength and hypertrophy:
- 3 to 4 sets of 6 to 10 reps
- 2 to 3 times per week
- Rest 2 to 3 minutes between sets
For beginners learning the movement:
- 3 sets of 8 to 10 reps with light weight
- Focus entirely on form rather than load
- 2 times per week
Progression: Add weight when you can complete all sets and reps with perfect form and the last rep does not represent a significant struggle. Increase by the smallest increment available, typically 2.5 kilograms per dumbbell or 5 kilograms on the bar.
RDL Variations and Progressions
Single leg RDL Stand on one leg and perform the same hip hinge movement. This dramatically increases the demand on hip stability and unilateral hamstring strength. Use bodyweight or a light dumbbell to begin with.
Stiff leg deadlift Similar to the RDL but with the weight starting from the floor each rep. The legs remain straighter throughout and the range of motion is greater. More demanding on the lower back and requires good hamstring flexibility.
Banded RDL Stand on a resistance band with both feet and hold the ends. The band provides accommodating resistance and is excellent for learning the movement pattern or as a warm-up before loaded variations.
Barbell RDL The loaded progression from dumbbells. Allows significantly heavier loading and is the preferred option for intermediate and advanced lifters focused on strength development.
Who Benefits Most From the RDL
Runners and athletes rely heavily on the hamstrings for speed, power, and deceleration. Hamstring strains are one of the most common athletic injuries and are strongly associated with hamstring weakness. The RDL directly addresses this.
People with lower back pain often have weak glutes and hamstrings that force the lower back to compensate during bending and lifting movements. Strengthening the posterior chain through the RDL reduces this compensatory loading.
Those who squat and deadlift regularly often have relatively underdeveloped hamstrings compared to their quads. Adding the RDL corrects this imbalance and improves performance in both the squat and conventional deadlift.
Beginners benefit from learning the hip hinge pattern early in their training because it forms the foundation of numerous exercises and daily movements, from picking up objects from the floor to bending to tie shoelaces.
Frequently Asked Questions
How much weight should I use for RDLs? Start lighter than you think necessary. The RDL is a technique-driven exercise and the most common error is using too much weight before the pattern is established. Begin with dumbbells you can control for 10 slow, deliberate reps with a neutral spine. Build from there.
Should I feel the RDL in my lower back? You should feel mild fatigue in the erector spinae muscles of the lower back as stabilisers, but you should not feel pain or the primary work in your lower back. If your lower back is doing most of the work, you are likely rounding your spine or not hinging deeply enough through the hips.
What is the difference between an RDL and a stiff leg deadlift? The RDL maintains a consistent soft knee bend and the weight does not touch the floor between reps. The stiff leg deadlift has straighter legs and the weight returns to the floor each rep, making it a longer range of motion exercise with more lower back demand.
How often should I do RDLs? Two to three times per week is appropriate for most people, with at least one rest day between sessions to allow hamstring recovery. The hamstrings are a large muscle group that responds well to frequency but also needs adequate recovery time.
Can I do RDLs if I have tight hamstrings? Yes, and in fact the RDL is one of the best exercises for improving hamstring flexibility over time. Simply limit your range of motion to where you can maintain a neutral spine and allow it to increase naturally as flexibility improves over weeks of consistent training.