Physical activity intensity, sedentary time, and body composition in preschoolers. by Collings, P, Brage, S, Ridgway, C, Harvey, N, Godfrey, K, Inskip, H, Cooper, C, Wareham, N, Ekelund, U

Objectively measured physical activity in four-year-old British children: a cross-sectional analysis of activity patterns segmented across the day. by Hesketh, K, McMinn, A, Ekelund, U, Sharp, S, Collings, P, Harvey, N, Godfrey, K, Inskip, H, Cooper, C, van Sluijs, E