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Objective measurement of physical activity in youth: current issues, future directions. Exerc. Sport Sci. Rev., Vol. 29, No. 1, pp 32-36, 2001. Second-generation activity monitors have revolutionized the way in which we measure youth physical activity. Use of the monitors avoids the problems associated with self-report methods and allows for the estimation of physical activity patterns over time. This article examines important methodological issues related to the use of activity monitors in children and adolescents.
Stewart G. Trost (Mon,) studied this question.