Is this Bit Fit? Measuring the Quality of the Fitbit Step-Counter
Keywords:Physical activity, Measurement, Reliability, Validity, Pedometer, Accuracy
AbstractBackground: Accurate measurement of physical activity is essential for understanding the relationship between physical activity (PA) and health outcomes. Technological advances have led to a surge in commercially-available pedometers, however, limited scientific evidence exists regarding their accuracy Purpose: This study is the first to test the quality of the newly developed Fitbit step-counter and comparability relative to the Yamax SW-200 pedometer. Methods: Ten healthy young adults participated. The quality of the Fitbit was assessed through: 1) a 20 Step Test; 2) a motor vehicle test; and 3) a treadmill test at various speeds (2, 3, 4, 5, 6, 8, 9, 10, 11 km
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