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 » and I learned good stuff. Abs exercises (especially for rectus abdominis) must work with the round back (round your spine).…

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Tear Of Hamstring Muscle

I read a Frederic Delavier’s book « Strength Training Anatomy » and I learned good stuff. In bodybuilding, tears of hamstring muscles are common. This often happens during squat when the torso is too much inclined. All hamstrings muscles (except biceps femoris short head) are extremely stretched and squeeze strongly to straighten the pelvis. Precisely at this point, there may be a…

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