Validating The Adidas miCoach For Estimating Pace, Distance, And Energy Expenditure During Treadmill Exercise

To validate the accuracy of the Adidas miCoach activity monitor in estimating energy expenditure (EE) (kcal/min), pace (min/km), and distance (km) during treadmill walking and running, and for two different sensor configurations. Nine male and 9 female moderately endurance trained volunteers (mean + or - SD age: 28.83 + or - 1.90 y; height: 168.72 + or - 1.86 cm; body mass: 62.19 + or - 2.58 kg; VO2max: 54.36 + or - 1.15 mL/kg/min) completed a maximal oxygen consumption test, and the miCoach validation protocol comprised of level treadmill walking at 53.6, 80.4, and 107.2 m/min, and level treadmill running at 134.0, 160.8, 187.6, and 214.0 m/min. There was a significant increase in EE (P [< or =] 0.003), pace (P [< or =] 0.001), and distance (P < 0.001) with each subsequent treadmill speed. The Adidas miCoach significantly overestimated actual EE for the midsole at 53.6 m/min (P = 0.045), and for both laces and midsole at 80.4 and 107.2 m/min (P [< or =] .036).