Comparison of steps and energy expenditure assessment in adults of Fitbit Tracker and Ultra to the Actical and indirect calorimetry
Noah J, Spierer D, Gu J, Bronner S. Comparison of steps and energy expenditure assessment in adults of Fitbit Tracker and Ultra to the Actical and indirect calorimetry. Journal Of Medical Engineering & Technology 2013, 37: 456-462. PMID: 24007317, DOI: 10.3109/03091902.2013.831135.Peer-Reviewed Original Research