The video shot at a Venice fire station was intended to promote classes at Hoopnotica. It shows a woman in shorts and heels undulating with a Hula-Hoop and in a firefighting uniform.
Fire officials say they will investigate why firefighters allowed the filming. The same station was investigated last year for letting trucks be used in a porn movie shoot.
Hoopnotica spokeswoman Lauren Brand says the company shoots similar videos in different locations every week. She says the company regrets the attention and that its employees were just having fun with local heroes.
Firefighters at the station declined to comment.