Lower outside Abdominal soreness on flexion and adduction

Been having something that feels like a deep internal tightess,. Don’t feel it when riding, I do while running, but after going for a while, it seems to subside and loosen. It is most noticeable when I make certain moves from the seated and laying position and want to stand up.

Any ideas? Iliosoas?

I do core work, but I mostly targets abductors (glute med, TFL) to prevent IT issue.

Migh head to massage or maybe PTZ next week before this become something major.

Any suggestions to loosen or strengthen I would love to hear it.