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 ...

What Is the Psoas Muscle? The psoas (pronounced so-ezz) muscles are two large muscles in your lower back. You have one on either side of your spine. They're the main muscular connection between your ...

The iliopsoas muscle is the major flexor of the hip joint, made up of the iliacus and psoas major muscles. Pain in the iliopsoas muscle can be caused by sitting too long, muscle imbalance, overuse, or ...