Smith Machine Romanian Deadlift

Also known as: Smith Romanian Deadlift, Smith Machine RDL, Smith RDL

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Body Part: Gluteal

Description

Stand in a Smith machine, push your hips back and lower the guided bar along your thighs to just below the knees to build your glutes and hamstrings. The stretch grows along the back of your thighs on the way down, then your glutes and hamstrings stand you up while your lower back stays flat. The bar runs in fixed tracks, so you never balance it: your feet set its path, and the safety stops let you push sets close to failure without a spotter. Reach for it when learning to hinge or for hard hamstring work late in a session; for the heaviest loads, the barbell version wins.

How to Perform

Set the bar hooks at about mid-thigh height and the safety stops just below your lowest point, roughly mid-shin.
Stand behind the bar, feet hip-width and parallel, so it touches your thighs and sits over mid-foot. The track won't move; your feet set the path.
Take an overhand grip about shoulder-width, hands just outside your thighs, and rotate the bar off the hooks. No step back: you're already in position.
Breathe in, brace your stomach and unlock your knees to a soft bend of about 15–20°. That knee angle doesn't change until the last rep.
Push your hips straight back. Your torso tips forward as the bar slides down your thighs, back flat, eyes on the floor 1–2 m ahead.
Lower over 2–3 seconds and stop when your hips stop traveling back, usually with the bar just below the knees, well above the stops.
Drive your hips forward and squeeze your glutes until you stand tall, hips under shoulders. Re-hook the bar only from this upright position, never from the bottom.

What Muscles Work

Primary Muscle:

Secondary Muscles:

Tips

Do 2–4 sets of 8–12 reps here, up to 15, or 6–8 when strength is the goal.
Add reps first. Once you get 12 on all sets with the same depth and a flat back, add 2.5–5 kg in total and go back to 8.
Smith bars weigh different amounts, and some are counterbalanced, so log the plates you load and compare sessions on the same machine.
Expect a strong pull behind your thighs on the way down. A lower back that burns more than your hamstrings means you're going too deep or rounding; feeling it mostly in the front of your thighs means your knees are bending too much. If your grip quits first, use lifting straps.
Still learning the hinge? Groove it with the Cable Pull Through, or stop the bar just above your knees with a light load. When that feels easy, add a 2-second pause just below the knees, slow the lowering to 4 seconds, or move to the free barbell.
Substitutes: Romanian Deadlift (free barbell, you balance it and can go heavier), Dumbbell Romanian Deadlift (easiest swap when the Smith is taken), Cable Romanian Deadlift, Smith Machine Good Morning (bar on your upper back, so grip drops out).

Common Mistakes

Feet in the wrong spot for the track: the bar drags off your thighs or jams into your knees and shins on the way down. Place your feet so the bar touches your thighs at the top and sits over mid-foot, and test it with one empty-bar rep before loading.
Bending the knees more as you descend until the shins tip forward and the rep becomes a regular Smith deadlift. Lock in the soft bend at the top and think "hips back, shins vertical."
Rounding your lower back to reach the stops or the floor. Depth ends where your hips stop moving back with a flat back; if the back rounds before that, take plates off.
Parking or bouncing the bar on the safety stops between reps. Set them below your working range and lower over 2–3 seconds so a normal rep never touches them.