The main muscles used during reverse hypers are: Erector Spinae – also known as your spinal erectors, these muscles run up either side of your back.

Aside from Deadlifts, this is one of the best exercises out there if you want to get a thick and meaty lower back, thick hammies and solid glutes. Erector Spinae – The Erector Spinae is a key muslce that’s targeted with hyperextensions. Back extensions also work …


It is especially activated as you lift your body weight until parallel to the floor or thighs depending on the 45 or 90 degree hyper extension. In fact, according to a 2004 study published in Medicine & Science in Sports, the glutes and hamstrings can fatigue before the back muscles in a back extension, especially when weight is added to the exercise. Muscles Worked in Hyperextension Bench Exercise 1. This includes the erector spinae, which supports the lower spine.
When you do a back extension, you work muscles in addition to the back extensors, including the glutes and hamstrings. I found that most strong lifters who knew the importance of this lift did a lot of back extensions with a barbell for higher reps whether it was on the 45 degree back or horizontal back extension bench. Back extension exercises (sometimes also called hyperextensions) can strengthen lower back muscles. Their primary job is the extension of your spine but, in reverse hypers, their main role is keeping your lower back fixed and stable as you lift your legs. Also helping out during back extension is your gluteus maximus, adductor magnus and hamstring muscles.