Resumen de Assessing Physical Activity in Children With Asthma: Convergent Validity Between Accelerometer and Electronic Diary Data
Josh N. Floro, Genevieve F. Dunton, Ralph J. Delfino
Convergent validity of accelerometer and electronic diary physical activity data was assessed in children with asthma. Sixty-two participants, ages 9�18 years, wore an accelerometer and reported their physical activity level in quarter-hour segments every 2 hr using the Ambulatory Diary Assessment (ADA). Moderate validity was found between physical activity data from accelerometers and ADA (average individual participant Spearman r = .48, SD = 0.13). Within-participant accelerometer estimates for ADA sleep, rest, and light activity were different from each other and from higher activity (mixed model p < .0001), but moderate did not differ from strenuous activity (p = .70). Moderate validity between accelerometer and electronic diary data supports the use of ADA with short-term recall to capture gross changes in daily activity.
