What is foot fetish, and how does it interact with athleticism in this Asiaphile video?

The video shows a beautiful Asian lady with long slender legs and firm feet performing some highly dynamic actions. She then comes in with a provocative high heel banging it against the camera, and proceeds to unsuit her lies and show off her erotic pussy and tights. She then starts sliding her feet on various parts of her body and gets more and more sexually excited until she proudly making herself climax with mouth opening moaning and gasping effects.