Emmanuel completed a PhD on physical activity and childhood obesity at the University of Bristol (UK). Between 2003 and 2014 he was based at University College London where he initially led the development and implementation of physical activity measures in large-scale nationwide epidemiological surveillance studies. He was subsequently awarded a Postgraduate Fellowship Award (2007) and a Career Development Fellowship (2011) by the National Institute for Health Research to studying the influence of physical activity, sedentary behaviour, and cardiorespiratory fitness on cardiometabolic and mortality. He joined the University of Sydney as an Associate Professor of Exercise, Health, and Physical Activity in early 2014, currently he is a National Health and Medical Research Council Senior Research Fellow at Charles Perkins Centre and the School of Public Health .