Critique of: "Physical Activity Assessment Between Consumer- and Research-Grade Accelerometers: A Comparative Study in Free-Living Conditions"

JMIR Mhealth Uhealth. 2017 Feb 27;5(2):e15. doi: 10.2196/mhealth.6860.

¹ Faculty of Sport Sciences, PROFITH "PROmoting FITness and Health through physical activity" research group. Department of Physical Education and Sports, University of Granada, Granada, Spain.
² Karolinska Institutet, Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.

No abstract available

Keywords: Fitbit; actigraphy; activity tracker; aerobic exercise; physical activity; validity.