Senior Professor of Public Health and NHMRC Leadership Fellow (Level 2)  in the School of Health and Society at the University of Wollongong, Australia
Hold an Adjunct Professorship at Western Norway University
His research focuses on movement behaviours (physical activity, sedentary behaviour, and sleep) in children, with a particular focus on low- and middle-income countries
Currently leads an international study of movement behaviours in the early years called SUNRISE, which involves 43 countries, 28 of which are low- or middle-income
Has published over 330 peer-reviewed journal articles which have been cited over 26,000 times. He has a h-index of 81. He was a Clarivate Highly-Cited Researcher in 2019 and 2021