Julie Manley
Apple watch to offer first fitness tracking device for wheelchair users

Great news that Apple has researched new formulas for calculating activities and calories burned for wheelchair users. They had to calculate things like different seat heights, varying surfaces/resistances when propelling and changes in energy expenditure when wheeling up and down hills.
http://www.wral.com/the-apple-watch-will-soon-track-fitness-for-wheelchair-users/15775595/