Calibration of the RT3 Accelerometer for Ambulation and Nonambulation in Children

The purpose of this study was to provide RT3 accelerometer thresholds to distinguish nonambulation from ambulation, as well as distinguish between low, moderate, and vigorous intensity ambulation in Chinese children.Thirty-five 8- to 12-yr-olds completed a laboratory-based experiment to calibrate the RT3 device across a range of intensities. Oxygen uptake during sedentary tasks and ambulation was aligned, with corresponding RT3 output, to one of...