This is an accessory movement for the deadlift with the additional benefit of increasing single-leg stability and flexibility. The majority of stress is on the hamstrings and glute of the stance leg.
This variation doesn't require additional load. Placing the arms in the prisoner position increases the torque loading at the hip by increasing the lever length of the torso's center of mass.
- Set up inside a 45-degree hyper and lock only one leg into the foot pad with the other leg resting on top of the other side. The upper body should have a neutral spine and tucked chin, with no excessive arching of the low back.
- Hinge at the hips and lower the upper body without rounding the spine until a stretch is felt in the hamstrings. Make sure no rotation occurs at the torso throughout the exercise.
- Use the hamstring to pull the torso back in line with the legs and finish with the glutes.
- Using spinal flexion and extension instead of hip flexion and extension.
- Allowing the torso to twist throughout the range of motion.
- Not finishing with glutes and instead arching the low back excessively to finish off hip extension.