The iliopsoas muscle is the major flexor of your hip joint ... Your body has two iliopsoas muscles: one at the left hip, and one at the right hip. Injury to the iliopsoas may cause hip pain ...

but by strengthening your hip flexors via hip flexor exercises like the ones shown here, you will help avoid injury and improve your running form. This study, which examined the relationship ...

Patients (or Participants) 541 elite to sub-elite male footballers had their eccentric knee flexor strength assessed using the NHE. Reports of HSIs and any history of ACL injuries were obtained. All ...