Development and Validation of Universal Step Detection Threshold for Raw Accelerometer Data: 2298 Board #311 June 1 2. (May 2017) - Lim, Jongil; Han, Ho; Aguiar, Elroy J.; Busa, Michael A.; Ducharme, Scott; Moore, Christopher; Chipkin, Stuart R.; Staudenmayer, John; Tudor-Locke, Catrine