Wii Sports and Wii Fit Increase Adults' Energy Expenditure

Sciencedaily.com recognizes a study done by Nintendo on how much energy was used during each activity on Wii Sports and Wii Fit.  This is what they have to say:

ScienceDaily (2009-11-16) -- One-third of Wii sport and Wii fit activities provide energy expenditures equal to moderate-intensity exercise. Active video games may help prevent or improve obesity and lifestyle-related diseases, researchers said. The study was funded by Nintendo.

Science Daily Wii Sports and Wii Fit Article