Where the dancing took the field?

Hi all! I try to write a bachelor thesis about pole dancing. I have to question you at all - what do you think about where the dancing took the field like a sport? I need something officially documented. Now there is only claim of Sheila Kelley - in her book, that she transformed stripper moves to exercise, which began to be taught as a sport. It was really she, who began to promote pole dancing as a sport? I dont think so.. ://