Why the caloric values between my treadmill and Walk n Play differ?
First, different treadmills output significantly different caloric values for the same person and acivity. The accuracy of a treadmill’s caloric calculation really depends on the treadmill itself. Our research as well as research by others show that most treadmills overestimate caloric consumption. In general, our caloric estimation is more accurate than that of a typical treadmill. However, in the current release caloric estimation for some positions is more accurate than others. Walk n’ Play is most accurate when you wear your iPhone either on the waist, the arm, or the hand. In addition, Walk n’ Play underestimates energy expenditure during running. All these will improve in future releases.
