As far as I know, the author and owner of One on One Mat is Kathi Ross-Nash! It would be worth mentioning! Please, enter Pilatesology; there's this workout; Kathi explains clearly how she got into this workout. It is Her Baby!!!!!!
Hello again Ewa, If you look in the description of the class, we directly credited Kathi when we released the video, 6 years ago (actually 2 days went by before we realized the credit was missing). This class is offered on PA with Kathi's permission and support. Thank you for making sure we are doing things right.