The Raine Study has been tracking the development of approximately 2860 children since in utero. At their 13th birthday assessment, 418 girls, and 384 boys completed the MARCA (Ridley, Olds, & Hill, 2006), a computer-based, self-report diary of daily activities and recorded their pedometer steps. MARCA data were coded for activity type - sedentary, including TV/video, computer and e-games, and for physical activity levels, duration, and frequency. Daily average time spent in the activity types and step counts were calculated. Pedometer step counts were significantly different between girls (M = 10,042) and boys (M = 11,572, p < .01). A low, but significant, relationship was found between step counts and MARCA daily average time for MVPA for both male and females (r = .304 and re = .354, p <, .05, respectively). Higher step counts were significantly associated with lower MARCA sedentary time for girls (r = -156, p<.01) but not boys (r=-.09). In reverse, lower pedometer counts were inversely associated with greater electronic media use for both boys and girls (r=-.237, r=-.225, respectively, p< .05). The proportion of children adhering to the physical activity and sedentary behaviour guidelines for children will be discussed.
Parker, H., Hands, B., & Larkin, D. (2007). A day in the life of adolescents: computer-based self-report of physical activity and sedentary behaviour and pedometer measures of physical activity in 14 year old boys and girls. Paper presented at the 25th International/Biennial ACHPER Conference: PACE Yourself. Fremantle, WA, 3-6 October.