Chronic or Recurring Groin Pull/Strain
Because of the groin muscles’ close proximity to the pelvic floor muscles, when the pelvic floor muscles are not working properly, the groin muscles often try to help out. This can lead to muscle tightness and fatigue which becomes more evident when you do something that requires repetitive use of the groin muscles such as running.
If you find that you get groin pain when running that feels somewhat better with stretching but comes back the next time you run, it could be that your pelvic floor and/or abdominal core muscles are not working properly and the groin muscles are trying to do double duty as a stabilizer (which it is not designed for) and mover (which it is designed for). Often, optimizing the core and pelvic floor muscles through a targeted rehabilitation program can fix the groin pain permanently.