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 ...

Background Osgood-Schlatter disease (OSD) of the knee in youth is one of the most frequent of anterior knee pain in athletes. There are several risk factors that contribute to this disease. Objective ...

Quadriceps are a group of four muscles located at the front of your thigh. Your quadriceps are some of the largest and strongest muscles in your body. Share on Pinterest peterdharwood/Getty Images ...

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 ...

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What Is the Body’s Core? Your body’s core is the term used for the group of muscles within your midsection that stabilize your spine and pelvis. Several muscles and groups of muscles make up the core ...