Healthy hip flexor muscles are essential for runners—not only do you need them strong, but mobile too. Just think about your stride: When you push off the ground, your hip flexor muscles drive you ...
A muscle in the quadriceps, the rectus femoris muscle is attached to the hip and helps to extend or raise the knee. This muscle is also used to flex the thigh. The rectus femoris is the only muscle ...
3 Department of Physical Therapy, Osaka Electro-Communication University, Osaka, Japan 4 Department of Rehabilitation Science, Osaka Health Science University, Osaka, Japan 5 Department of ...