The Romanian deadlift is the best isolation-style builder for the hamstrings and glutes — a hip hinge that keeps constant tension on the posterior chain.
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Get FormTwin — free on the App StoreA conventional deadlift starts from the floor and trains the whole posterior chain to lift maximal weight. The Romanian deadlift starts from standing, keeps the knees mostly fixed, and isolates the hamstrings and glutes through a controlled stretch.
Yes — the glutes drive the hip extension at the top of every rep, alongside the hamstrings. RDLs are one of the most effective glute-and-hamstring builders you can do.
Some erector-spinae work is normal, but a strong low-back emphasis usually means the back is rounding or the hips aren't being pushed back far enough. Keep a flat back and hinge from the hips.
This guide is general fitness information, not medical advice. Muscle involvement varies with form, grip and individual anatomy. Consult a professional before starting a new program.