Machine Trunk Rotation

What’s up ? This is THE stephane ANDRE ! I read a Frederic Delavier’s book « Strength Training Anatomy » and I learned good stuff. Attention Torso’s rotation in the machine are proscribed for people suffering from lower back or having already had a…

Good Position For Abs

Action on lumbar curvature of the psoas muscle Psoas muscles have other functions than to be powerful flexors of hip. They put the lumbar spine in lordosis, which increases the arch. I read a Frederic Delavier’s book « Strength Training Anatomy »…