Objectively measured physical activity in four-year-old British children: a cross-sectional analysis of activity patterns segmented across the day

Kathryn R Hesketh, Alison M McMinn, Ulf Ekelund, Stephen J Sharp, Paul J Collings, Nicholas C Harvey, Keith M Godfrey, Hazel M Inskip, Cyrus Cooper, Esther MF van Sluijs
International Journal of Behavioral Nutrition and Physical Activity 2014, 11:1 (9 January 2014)