Yet Another Reason to Ride Coasters--       to Pass Kidney Stones?

Thanks to a recent study by Dr. David Wartinger at Michigan State University and The Journal of the American Osteopathic Association, new information has been released indicating that if you suffer from kidney stones, you might want to take a trip to Disney World. Research from the Michigan State University and AOA show that riding a "Medium Intensity" rollercoaster, like Big Thunder Mountain Railroad at the Magic Kingdom, creates an extremely high chance of passing kidney stones.The medical tests were performed on Big Thunder Mountain Railroad,

a custom ride at Disney's Magic Kingdom designed by Walt Disney Imagineering and constructed by Arrow Dynamics. This ride reaches a relatively tame speed of 36 miles per hour on its course, and pulls 2.5 Gs throughout its near three-minute ride. It seems unimpressive, and aside from the Disney-style theming, it is. Compared to newly designed coasters relying near completely on computer software for

 design, this ride pales in comparison. Formula Rossa at Ferrari World in Abu Dhabi reaches a baffling top speed of 149 miles per hour, more than five times the speed of Big Thunder, and its height of 60 feet being dwarfed by Kingda Ka at Six Flags Great Adventure, towering over Big Thunder by 396 feet. But even with these small stats, the ride has proven to have an average kidney stone passage rate of 63.89% in the back row, and a much more modest 16.67% rate of passage in the front. The researchers used a 3D printed model of a patient's kidney and 3 

different sized kidney stones--two average sized stones measuring 4.5 and 13.5 cubic millimeters, and a large 64.6 cubic millimeter stone. The researchers rode the ride 20 times with the kidney model concealed in a padded backpack placed against the seatback and the kidneys stones placed in varying positions throughoutthe model. After the testing had

finished and the results had been studied, they showed that front seating on a roller coaster results in a passage rate of 4/24, and back seating results in a passage rate of 23/36. So if you are one of the 300,000 Americans who need to seek emergency attention each year for kidney stones -- a condition that affects 11% of men and 6% of women in their lifetimes -- go ride a coaster!

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