Single-Leg Romanian Deadlift
How to Do a Single-Leg Romanian Deadlift
Stand tall on one leg with the working foot pointing mostly forward and a soft bend in the knee.
Hold a dumbbell or kettlebell in one or both hands, or begin with bodyweight if balance is the limiting factor.
Brace the core and keep the pelvis square rather than opening the free-leg hip toward the ceiling.
Push the working hip backward while the free leg extends behind you and the torso inclines forward as one coordinated hinge.
Keep the weight close to the working leg and maintain a neutral spine throughout the descent.
Stop when you feel a strong stretch in the working hamstring or just before balance or pelvic position begins to fail.
Drive through the working foot and squeeze the glute to extend the hip and return to a tall, balanced position.
Form Check & Technique
DO THIS (Technique Tips)
- Master bilateral RDL mechanics first.
- Keep the working foot stable and mostly forward.
- Keep both hips facing the floor.
- Use a support if balance hides the hamstring stimulus.
- Keep the weight close to the working leg.
- Stop range when hip rotation starts.
- Return by extending the working hip, not by swinging the free leg.
AVOID THIS (Common Mistakes)
- Opening the Free-Leg Hip — Fix: point the free toes toward the floor and keep both hips square.
- Leaning the Chest Forward Without Moving the Hips Back — Fix: think hip hinge first, torso angle second.
- Locking the Working Knee — Fix: keep a soft bend so the hinge stays comfortable and stable.
- Bending the Working Knee Like a Squat — Fix: keep the knee angle relatively stable and push the hip backward.
- Weight Drifting Away — Fix: keep the dumbbell or kettlebell close to the working leg.
- Going Too Heavy for Your Balance — Fix: use a lighter load or hand support until the pelvis stays controlled.
About Single-Leg Romanian Deadlift
The single-leg Romanian deadlift is a unilateral hip hinge performed while balancing primarily on one leg. The working-leg hamstrings and gluteus maximus produce hip extension, while the gluteus medius, foot and ankle muscles, and core help control balance and pelvic rotation. The free leg extends behind you as a counterbalance; the goal is to hinge from the hip rather than simply tip the torso forward.
Single-Leg Romanian Deadlift Muscles Worked
The hamstrings and gluteus maximus control the hip hinge and extend the working hip.
- The gluteus medius, adductors, trunk, and lower-leg stabilizers help prevent the pelvis, knee, and foot from rotating or collapsing during the single-leg balance task.
Sets & Reps Guidance
Technique / Learning
Technique: 2–4 sets of 6–10 bodyweight or lightly supported reps per leg.
Strength Focus
Strength: 3–4 sets of 5–8 reps per leg with a dumbbell or kettlebell and stable balance.
Muscle Growth (Hypertrophy)
Muscle growth: 3–4 sets of 8–12 reps per leg using a controlled eccentric and full hamstring stretch.
General training baseline. Need.fit automatically adjusts exact sets, reps, and working weight based on your individual fitness level, recovery, and progress over time.
Exercise Variations & Alternatives
Dumbbell Romanian Deadlift
Bilateral dumbbell hip hinge with less balance demand.
Barbell Romanian Deadlift
Heavier bilateral RDL for progressive posterior-chain loading.
Good Morning
Upper-back-loaded hip hinge that challenges trunk stability.
Reverse Lunge
Unilateral lower-body exercise with more knee flexion and less hip-hinge emphasis.
Barbell Back Squat
Learn barbell back squat form, muscles worked, rack setup, stance, bracing, squat depth, common mistakes, variations, and practical sets and reps.
Lying Leg Curl
Learn lying leg curl form, muscles worked, hip & knee setup, pad placement, common mistakes, lying vs seated leg curl, and optimal sets and reps.
Single-Leg RDL vs Single-Leg Deadlift
In fitness content the names are often used interchangeably. The key pattern is a single-leg hip hinge with a soft working knee, hips moving backward, and the free leg extending behind while the spine stays controlled.
How to Keep Your Hips Square
Think about pointing the toes of the free leg toward the floor and keeping both front hip bones facing down as the torso lowers. If the free hip opens to the side, reduce range or use light hand support.
Contralateral vs Same-Side Loading
Holding the weight in the hand opposite the working leg increases the rotational-control demand on the hip and trunk.
- Same-side loading may feel easier for some lifters.
- Both are valid if pelvic position stays stable.
How to Improve Single-Leg RDL Balance
Start with bodyweight, lightly hold a bench or rack, or use a kickstand stance with the rear toes on the floor. Balance improves faster when you practice clean hinges instead of repeatedly losing position with a weight that is too heavy.
Single-Leg RDL vs Bilateral RDL
The bilateral RDL is easier to balance and allows substantially more load. The single-leg version reduces the external weight needed while adding unilateral hip stability and left-to-right control.
How Low Should You Go?
Do not force the torso to become perfectly parallel with the floor. Stop when the working hamstring reaches a strong stretch or when the pelvis starts rotating, the spine rounds, or the working heel loses stable pressure.
Single-Leg RDL Progressions
Progress from bodyweight or supported reps to a kickstand RDL, then a freestanding single-leg hinge, then add a contralateral dumbbell, two dumbbells, or slower eccentrics. Keep the same hip-square mechanics as difficulty increases.
Sources & References
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- [2]