e! Science News | UT study looks at manual wheelchair use, exercise and calorie burning.

A person who uses a manual wheelchair can burn up to 120 calories in half an hour while wheeling at 2 mph on a flat surface, which is three times as much as someone doing the same action in a motorized wheelchair. The same person can expend 127 calories while mopping and as much as 258 calories while fencing in a thirty-minute timeframe if the activities are done in a manual wheelchair.