The hip, knee, and ankle joints move through different ranges of motion during the conventional deadlift compared to the Romanian deadlift, especially at the lowest point and when the knees begin to...
Mechanism
Synthesis from 1 study
The two lifts move your body differently: one bends your knees more and keeps your back straighter, making your thighs and lower back work harder; the other pushes your hips back with straighter knees, stretching your hamstrings more and making your butt and back of legs do most of the work. That’s...
Most probable mechanism
When you lift with a conventional deadlift, your knees bend more and your hips stay more upright, which stretches your hamstrings less and lets your quads and lower back do more work. In a Romanian deadlift, your hips move farther back and your knees stay almost straight, which pulls your hamstrings tighter and shifts the load to the back of your legs. These different body positions change how much each joint moves and how hard each muscle has to pull, making the two lifts feel and work differently.
The hip joint undergoes greater flexion and posterior displacement during the Romanian deadlift compared to the conventional deadlift, increasing hamstring and gluteal muscle-tendon unit length.
The knee joint remains in a more extended position during the Romanian deadlift, reducing quadriceps involvement and increasing passive tension in the hamstrings and posterior capsule.
The ankle joint exhibits greater dorsiflexion during the conventional deadlift due to increased forward trunk lean and knee flexion, altering ground reaction force distribution and calf muscle loading.
At the bottom position, the conventional deadlift places higher torque demands on the lumbar spine and knee extensors, while the Romanian deadlift shifts torque dominance to the hip extensors and hamstrings.
During mid-thigh ascent, the conventional deadlift allows for greater knee extension velocity and quadriceps recruitment, whereas the Romanian deadlift maintains high hamstring tension due to sustained hip flexion and limited knee flexion.
Evidence from Studies
Supporting (1)
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