Lower back arches on the leg extension
Anterior core fails; hip flexors pull the lumbar into extension.
Overactive muscles
Hip flexorsErector spinae
Corrective work
Foam RollHip flexors↗StretchHalf-kneeling hip flexor stretch↗Core · Core
Band Dead Bug (Overhead Press)
Coaching cues
- Supine; press a band overhead into the floor with both hands
- Extend one leg while maintaining the press — anti-extension
- Lower back pressed into the floor throughout
- Return the leg; switch sides; never release the press
Common faults 1