The single leg Romanian deadlift is a one-leg hip hinge that builds glute and hamstring strength while training balance, hip control, and core stability. It works with one dumbbell in a garage gym, or with bodyweight alone.
This guide covers the setup, the six step hinge, the muscles doing the work, the mistakes that break your form, and how to program single-leg RDLs for strength, hypertrophy, or athletic carryover. Supported regressions are included for anyone who wobbles on the first rep.
Quick Answer: The single leg Romanian deadlift is a unilateral hip hinge performed on one leg while the free leg extends behind you as a counterbalance. Stand tall with a soft knee, brace, push the hips straight back, lower until you feel a hamstring stretch, then squeeze the glute to return without leaning back or snapping the hips forward.
Key Takeaways
- Movement: The single leg Romanian deadlift is a unilateral hip hinge that loads the glutes, hamstrings, and trunk stabilizers on one standing leg.
- Form first: A stable tripod foot, a soft standing knee, square hips, and a long neutral spine matter more than load or range of motion.
- Equipment: Dumbbells and kettlebells are the best starting tools for most home gyms, while barbell versions demand more balance and suit advanced lifters.
- Programming: Use 3 to 4 sets of 8 to 12 reps per leg for hypertrophy, or 3 to 4 sets of 6 to 8 reps per leg for strength.
- Regressions: Kickstand RDLs and rack assisted single-leg RDLs are smarter than forcing strict reps before you can control the hinge.
What Is a Single-Leg Romanian Deadlift?
A single-leg Romanian deadlift is a one-leg hip hinge where the standing leg supports your weight while the free leg extends behind you as a counterbalance. It is the unilateral version of the Romanian deadlift, and it raises the stability demand on the standing hip, pelvis, and trunk.
The movement is driven by the hips rather than by a deep knee bend, which keeps the tension on the posterior chain instead of the quads. That hip dominant pattern looks far more like running, cutting, and everyday bending than a squat does.
- Stance: One foot stays planted while the other leg floats behind you.
- Hinge direction: The hips travel backward and the torso tips forward as one unit.
- Balance demand: The standing foot, hip, and trunk cooperate to keep the pelvis level.
- Load options: Bodyweight, one dumbbell, two dumbbells, a kettlebell, a barbell, or a guided machine.
The pattern is close enough to a two-leg hinge that lifters usually check what single-leg RDLs work before they program them. The short answer is the same posterior chain muscles, loaded one side at a time.
How Do You Do a Single-Leg Romanian Deadlift With Proper Form?
Good single-leg RDL form starts with a tripod foot, a soft standing knee, square hips, and a long spine. Begin with bodyweight or a light dumbbell and add load only after you can hinge without twisting or losing balance.
- Step 1: Set your stance: Stand tall with your feet hip width apart and shift your weight onto one foot. Keep a soft bend in the standing knee and grip the floor with your big toe, little toe, and heel.
- Step 2: Brace and square the hips: Tighten your core before you move and keep both hip bones pointing toward the floor. Picture two headlights that should stay level and aimed straight down.
- Step 3: Hinge back: Push your hips straight back and let your torso tip forward as one unit. Do not round your back or turn the movement into a squat by bending the knee too much.
- Step 4: Reach the free leg long: Extend the non working leg behind you as a counterbalance. Keep that leg long and active instead of letting it hang loose.
- Step 5: Control the bottom position: Lower until you feel a strong stretch in the hamstrings or until your torso is close to parallel with the floor. Stop before your hips rotate open or your back loses position.
- Step 6: Return by driving through the floor: Press the standing foot into the ground and squeeze the glute to come back up. Finish tall without leaning back or snapping the hips forward.
Key Coaching Cues
- Build a tripod foot, with the big toe, little toe, and heel all pressing down.
- Keep the hip bones level, like headlights pointing at the floor. If one headlight turns out, your hips are twisting.
- Think long spine from the back of the head to the tailbone for the whole hinge.
- Slow down. Wobbling usually means the tempo is too fast or the load is too heavy.
The demonstration below shows the same hinge with a single dumbbell, which is the easiest way to learn the pattern at home.
What Muscles Does the Single-Leg Romanian Deadlift Work?
The single-leg Romanian deadlift primarily trains the hamstrings and gluteus maximus of the standing leg while the gluteus medius and trunk work to keep the pelvis level. Surface EMG has been used to compare muscle activity between the single-leg deadlift and the conventional bilateral deadlift in trained amateur athletes.[1]
Primary Muscles Worked
- Hamstrings: Loaded in a stretched position as the hips travel back.
- Gluteus maximus: The main driver that extends the hip and returns you to standing.
- Gluteus medius: Works hard to stop the pelvis from tilting or rotating.
Secondary and Stabilizing Muscles
- Erector spinae: Holds the spine long and prevents rounding under load.
- Core, abs, and obliques: Resist rotation and keep the torso square.
- Calves and ankle stabilizers: Manage balance through the standing foot.
- Upper back and lats: Keep the shoulders set, especially when you hold weights.
Because the gluteus medius carries so much of the stabilizing work, lifters who cannot keep the hip level often benefit from extra hip abduction volume after their main hinge work, such as the RitFit Cougar home adduction and abduction machine.
"It is my opinion that a weak posterior chain and weak glutes in particular are largely responsible for the alarming number of low back pain in the U.S. Anything that strengthens the posterior chain might lead to less low back pain and injury."
Bret Contreras, PhD, PhD in Sports Science, Contreras Strength Institute, Industry Rant: Back Extensions and Reverse Hypers
Which Single-Leg RDL Mistakes Break Your Form?
The most common single-leg RDL mistakes are rushing the descent, chasing depth, letting the hips rotate open, and allowing the free leg to hang instead of driving it long. Each one costs you tension on the working side and turns a hinge into a balancing act.
- Rounding the back: The spine should stay long, so stop the descent the moment you feel it curl.
- Bending the knee too much: A deep knee bend turns the hinge into a one-leg squat and moves work away from the hamstrings.
- Letting the free leg dangle: A passive back leg removes the counterbalance and makes the pelvis harder to control.
- Chasing range: Lowering past your available hamstring length forces the hips to open or the back to round.
- Going too fast: Speed hides balance problems, and the lowering phase is where most of the benefit lives.
- Loading too early: Adding weight before the bodyweight hinge is repeatable trains a sloppy pattern under load.
A simple check is to film one set from the side and watch the hip bones. If one hip drops or rotates toward the floor, reduce the range and slow the tempo before you add weight.
Why Add Single-Leg RDLs to Your Training?
Single-leg RDLs build glute and hamstring strength, expose left to right asymmetries, and train the hip stability that running, cutting, and stair climbing demand. They also need very little space or equipment, which makes them one of the most practical unilateral exercises for a home gym.
- Posterior chain strength: The long hip hinge loads the glutes and hamstrings through a large range of motion.
- Balance and coordination: Every rep asks the foot, ankle, hip, and trunk to work together.
- Asymmetry detection: Two-leg lifts can hide a weaker hip or an unstable foot, while a one-leg hinge makes the difference obvious.
- Hip stability: The standing leg has to control rotation while the pelvis stays level.
- Anti rotation core work: The trunk fights to stop twisting and tipping on every rep.
- Athletic carryover: Cleaner hip control shows up in deadlifts, split squats, and sprint mechanics.
- Minimal equipment: One dumbbell or kettlebell is enough for most home lifters to get started.
- Flexibility under load: Training the hamstrings in a stretched position can improve your tolerance for that range.
If your goal is a complete lower body day, single-leg RDLs sit well next to the rest of your leg machines or as an accessory after a heavier two-leg lift.
Which Single-Leg RDL Variation Should You Use?
The best single-leg RDL variation is the one that matches your balance and loading needs, so most home lifters start with a dumbbell or kettlebell and move to guided or barbell versions later. Beginners usually progress fastest with a Smith machine or landmine setup, while advanced lifters use a barbell when they want heavier loading.
Smith Machine Single-Leg RDL
The Smith machine version reduces some balance variables so you can focus on the hinge itself. It suits beginners, hypertrophy sets, and anyone who wants more support while learning, and the two-leg Smith machine Romanian deadlift is the natural stepping stone before you take one foot off the floor.
Dumbbell Single-Leg RDL
The dumbbell single-leg RDL is the most practical starting variation for most people. Hold one dumbbell for an added anti rotation challenge or two dumbbells for a more balanced loading pattern.
Barbell Single-Leg RDL
The barbell version allows more total loading, but it also raises the balance demand sharply. It usually suits advanced lifters who already own the pattern with dumbbells, and a RitFit deadlift jack barbell stand makes loading and stripping plates far less awkward between sets.
Landmine Single-Leg RDL
The landmine variation provides a more guided bar path and can feel more stable than a free barbell. It is a strong option when you want progressive loading without the full balance demand of a straight bar.
Kettlebell Single-Leg RDL
The kettlebell version works well because the load hangs naturally and stays easy to control. A one hand hold also makes the movement more demanding on the trunk and pelvis.
The clip below shows the kettlebell version, where the hanging load keeps the shoulder relaxed and the hinge honest.
"This barbell is the perfect addition to our new RitFit home gym! My nine year can easily lift with it, and it's also great for a quick workout to use for deadlifts, goodmornings, squats, etc."
Letha C. Verified Buyer, RitFit Colorful Training Barbell
Which Exercises Can Replace Single-Leg RDLs?
Kickstand RDLs, hip thrusts, step ups, reverse lunges, and machine options can all replace single-leg RDLs depending on what limits you. Choose a supported hinge when balance is the barrier, and a machine when you want the same muscles with less coordination demand.
Traditional Romanian Deadlift
The bilateral Romanian deadlift trains the same broad pattern with less balance demand. It is a better choice when your main goal is loading the posterior chain as heavily as possible.
Kickstand RDL
The kickstand RDL is the closest alternative if strict single leg balance is your limiting factor. It lets you train the hinge and glutes without losing position every rep.
Glute Bridge and Hip Thrust
These exercises target hip extension with less balance and coordination demand. If you want a supported version that still works one side at a time, the single leg hip thrust keeps the unilateral loading without the standing balance requirement.
Step Up
Step ups train the glutes and quads while also challenging single leg control. They are often easier for beginners to learn than a true single leg hinge.
Reverse Lunge
Reverse lunges build unilateral lower body strength with more stability than a single leg RDL. They are a strong option if balance is the main barrier.
Leg Press and Hack Squat Machines
Machines remove the balance component entirely and let you push close to failure safely. A leg press machine or a RitFit 3 in 1 leg press and hack squat machine BLP01 covers the same muscles when your goal is volume rather than control.
Cable Pull Through
Cable pull throughs reinforce the hip hinge pattern without forcing single leg balance. They can be a great stepping stone for lifters who still need to learn how to load the hips correctly.
Who Should Be Careful With Single-Leg RDLs?
Most people can train single-leg RDLs safely with controlled form and a load they can own. Lifters with current lower back pain, a recent disc injury, a healing hamstring strain, or a diagnosed balance or neurological condition should get clearance before loading the movement.
- Anyone with lower back pain right now or a serious disc injury in the past
- Lifters recovering from a severe hamstring strain
- People with serious balance problems, vertigo, or neurological conditions
If you belong to one of those groups, start with supported versions such as holding a rack or doing kickstand RDLs. Keep the load light, the tempo slow, and the range short until a clinician clears heavier work.
Stop right away and get checked out if you feel sharp pain, shooting pain, or numbness while you are moving.
Post-Workout Mobility for Hips and Hamstrings
A short cool down can help restore motion and reduce stiffness after heavy hinge work. Keep the intensity light and use mobility to relax the tissues rather than to force an aggressive stretch.
- Supine hamstring stretch with a strap: Hold for 30 to 45 seconds per side. Keep your lower back on the floor and stop at a mild to moderate stretch.
- Half kneeling hip flexor stretch: Hold for 30 to 45 seconds per side. Gently tuck the pelvis and squeeze the glute on the back leg.
- Figure four glute stretch: Hold for 30 to 45 seconds per side. This is useful after high glute demand work or when the hips feel tight after training.
Two or three minutes of easy movement is enough once your heavy sets are finished.
How Do You Program Single-Leg RDLs?
Program single-leg RDLs after your primary heavy lift or as the main accessory on a glute and hamstring day. The right set and rep scheme depends on whether you want strength, hypertrophy, stability, or movement quality.
- For strength: Use 3 to 4 sets of 6 to 8 reps per leg with a moderate to heavy load that still allows clean balance and hip control.
- For hypertrophy: Use 3 to 4 sets of 8 to 12 reps per leg, where a dumbbell, kettlebell, cable, or Smith machine version all work well.
- For stability and control: Use 2 to 3 sets of 8 to 12 controlled reps per leg with a lighter load, and let slower tempo and pauses do the work.
- For beginners: Start with bodyweight or kickstand RDLs for 2 to 3 sets of 6 to 10 reps per side, and add external load once the hinge feels repeatable and balanced.
- Rest periods: Rest about 45 to 90 seconds between sets. Longer rest is usually better when balance or heavier loading is the limiting factor.
Hamstring and Glute Accessories That Pair Well
Unilateral hinge work covers the stretched position, so leg curls fill in the shortened end of the range. The Mustang PRO leg extension and curl machine handles both movements in one frame, and the PLC01 leg extension and curl machine is the alternative if you prefer a dedicated unit for that pairing.
FAQs About Single-Leg RDLs
Is the single leg RDL a good exercise for building lower body strength?
Yes. It is an excellent unilateral hip hinge movement for your training routine. The exercise builds massive glute and hamstring strength while improving your overall hip stability. It forces your core and ankle stabilizers to work hard to correct left to right muscle imbalances effectively.
What muscles do single leg Romanian deadlifts work?
They primarily target your hamstrings and glutes during the deep hip hinge. Your gluteus medius works extremely hard to stabilize your pelvis and prevent twisting. The movement also engages your erector spinae and core muscles to maintain a flat back and proper posture throughout the lift.
How do you keep your balance during a single leg RDL?
You must create a firm tripod foot by pressing your big toe and little toe and heel into the floor. You should keep a soft bend in your standing knee and move slowly. Keeping your hips square to the ground prevents twisting and helps maintain your stability.
Can beginners do the single leg Romanian deadlift safely?
Yes. Beginners can perform this movement safely by starting with a simpler kickstand variation. You should use only your bodyweight until you master the hip hinge pattern. You can slowly add a light dumbbell or kettlebell once you can control your balance and keep your spine straight.
How many sets and reps should you do for single leg RDLs?
You should perform 3 to 4 sets of 8 to 12 reps per leg to build muscle size. You can drop to 3 to 5 sets of 6 to 8 reps if your main goal is raw strength. You must rest 45 to 90 seconds between your sets.
How heavy should the dumbbell be for a single leg RDL?
Start with a weight you can control for 8 to 12 slow reps per leg without losing your hip position. Many lifters begin with 10 to 25 lb dumbbells and add load once the hinge feels repeatable. Heavier loads are fine later, but balance and control should never break down for the sake of a bigger dumbbell.
How often should you train single leg RDLs each week?
Two sessions per week is plenty for most lifters, and three is reasonable if the volume stays low. Treat single leg RDLs like any other accessory and let the rest of your lower body training decide the total. Recovery quality, sleep, and how your hamstrings feel between sessions should guide the final number.
Conclusion
The single-leg Romanian deadlift is one of the most useful unilateral lower body exercises for stronger glutes, hamstrings, and hips while improving balance and control. Keep the foot stable, the pelvis square, and the hinge clean, and it becomes a reliable tool for strength, hypertrophy, and athletic carryover.
Start with bodyweight or a light dumbbell, nail the six step hinge, then add load once every rep looks the same. If you are stocking a home gym for that work, check the RitFit discount guide before you buy.
Disclaimer
This article is for general educational purposes only and is not medical advice. If you have lower back pain, a recent injury or surgery, numbness, tingling, or dizziness, consult a qualified clinician before starting, and stop any exercise that causes sharp pain.
References
1. Diamant W, Geisler S, Havers T, Knicker A. Comparison of EMG Activity between Single-Leg Deadlift and Conventional Bilateral Deadlift in Trained Amateur Athletes - An Empirical Analysis. Int J Exerc Sci. 2021;14(1):187-201. doi:10.70252/MVFY4610. PMCID: PMC8136577
