India-based Medical Researchers Claim Michael Jackson's "Anti-gravity" Move Challenges Spine Biometrics

Late King of Pop Michael Jackson is obviously an inspiration to a lot of dancers such that many RnB singers have used many of his moves in various forms in their music video or stage performance.
To master some of the "Billy Jeans" singer dance steps, routine practice will be required, and might even inflict dancers with injuries that can land them in the hospital.
Of all MJ's dance steps, the anti-gravity move he made in "Smooth Criminal" is one that is hard to do exactly as he did in 1988, and that is what a group of researchers at Postgraduate Institute of Medical Education and Research in India, are looking into on how he managed to put gravity to test, and in addition how he managed to challenge medical science understanding of spine biometrics.

The lead researchers - Dr. Nishant Yagnick and Dr. Manju Tripath - carried out an investigation on how the late singer's body could have well supported him in the course of the dance moved in spite of the specialised shoes he wore.
Having examined many dancers and body functions, they say it would take one to be MJ to do 45 degrees otherwise limits anyone can possibly get is between 25 to 30 degrees because the body erector soon as muscles and ankles could not have assisted well such a move even with the specialised shoes which he patent in 1993.
"This allows for a very limited degree of forward bending from the ankle joints," the researchers says about doing the move even in his shoes "Most trained dancers with strong core strength will reach a maximum of 25 or 30 degrees of forward bending while performing this action."
Dr. Tripathi and Dr. Yagnick published the outcome of their research on the late King of Pop anti-gravity move in a journal with the theme: How did Michael Jackson Challenge Understanding Of Spine Biomechanic?"