Healthy hip flexor muscles are essential for cyclists—not only do you need them strong, but mobile too. Just think about your pedal stroke: Your hips move through a pretty full range of motion to hit ...

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 ...

The rectus femoris muscle is one of the four major muscles that make up the quadriceps, or the front part of your upper leg. Strengthening the rectus femoris, in particular, can help stabilize your ...