FLEXION: 90°

- Hamstrings

- Erector spinae

EXTENSION: 30-45°

- Rectus abdominis

- Internal obliques

- External obliques

- psoas major

- Rectus femoris

ROTATION: 30-45°

- Internal obliques

- External obliques

- Erector spinae

- Quadratus lumborum

LATERAL FLEXION: 30-45°

- Internal obliques

- External obliques

- Erector spinae

- Quadratus lumborum