Protocols / Hinge
strength · sagittal · 10s model
Hip Hinge / RDL
Hip-dominant pattern. Dissociate hip flexion from lumbar flexion.
Setup
- Soft knee (~15–20°), maintained
- Bar or dowel along mid-foot; shoulder over the bar at the bottom
- Sagittal view, full spine visible
Scoring rubric
- Knee angle nearly isometric
- Hip flexion is the primary motion
- Trunk segment rotates as a unit — no lumbar rounding late in the range
Literature
McGill — spine-sparing hip hinge. Palmitier et al. — kinetic chain in the deadlift.
Tracked joints: hip, knee, trunk. The kinematic engine is a teaching model scaled to the active subject. Export CSV from the report for your own processing.