- prevent full extension as you come out of the squat;
- can pull on the pelvis as you lower down to prevent your back from staying upright; and/or
- decrease your full power potential during your run stride if you can’t fully extend the hips as the striking foot leaves the ground behind you.
Hip Flexor Anatomy 101
Without getting too anatomical, the hip flexors consist of 3 main muscles — Iliacus, Psoas Major and Rectus Femoris. The Iliopsoas (more commonly referred to as the hip flexors) flex the hip joint as well as stabilize the low back. The Rectus Femoris (top most quad muscle), along with some other muscles we won’t get into today, assist with that hip flexion. For all the tactile learners out there, try standing up straight and lifting your knee up so that it is parallel with your hip. Now find the hip crease and press down — you should feel a tense muscle which is most likely the Illacus. Now from here, straighten your leg while keeping it as high as you can. Feel for the muscle on the very top of your thigh; that is the Rectus Femoris. If you found it difficult to find these muscles on your own body, here is where we get a little more precise with the anatomy so that you can see where exactly these muscles are in relation to your hip joint.” Conditioning…