Movement guide
Erector spinae
A group running along the spine that extends the trunk and resists forward bending.
The spinal extensors mainly resist movement in these exercises.
01
Romanian deadlift
Compound · Barbell
Also works
Hamstrings, gluteus maximus; forearms maintain grip
How to perform
With soft knees, push your hips back and keep the bar near your legs. Stop when you reach your controlled hinge depth, then stand.
Move at the hips while maintaining a steady back position.
Example volume · 3 sets × 6–10 reps
02
Bird dog
Stability · Bodyweight
Also works
Multifidus, gluteus maximus, abdominal wall
How to perform
Start on hands and knees. Extend the opposite arm and leg without rotating your trunk, pause, then return and switch sides.
Reach long rather than lifting high.
Example volume · 2–3 sets × 6–10 / side
References
openstax.orgCommunity draft · awaiting expert review