James F. Sallis, Ph.D is Professor of Psychology at San Diego State University and Director of Active Living Research, a program of the Robert Wood Johnson Foundation.  His primary research interests are promoting physical activity and understanding policy and environmental influences on physical activity, nutrition, and obesity.  He has made contributions in the areas of measurement, correlates of physical activity, intervention, and advocacy.  His health improvement programs have been studied and used in health care settings, schools, universities, and companies.  He is an author of over 450 scientific publications, on the editorial boards of several journals, and one of the world’s most cited authors in the social sciences.  Dr. Sallis has received awards from the American College of Sports Medicine, Society of Behavioral Medicine, and American Psychological Association Division of Health Psychology.  His current focus is using research to inform policy and environmental changes that will increase physical activity and reduce childhood obesity.  Dr Sallis frequently appears in major media outlets, and Time Magazine identified him as an “obesity warrior”. 

Karen Campbell is a Senior Researcher in the Centre for Physical Activity and Nutrition Research at Deakin University in Melbourne, Australia.  With a background in dietetics and health promotion Dr Campbell undertook her Masters in Public Health and then a PhD which focussed on home environment correlates of young children’s eating behaviours.  Karen conducted the first Cochrane systematic review of obesity prevention in children in 2002 to better understand what worked in obesity prevention but also to highlight how underserved this important area was.  She continues to update this review biannually and is also undertaking a Cochrane review of interventions to promote fruit and vegetable consumption in 0-5 year olds. Her intervention research focuses on the continuum of opportunities for obesity prevention between pre- pregnancy and early childhood and with her colleagues at Deakin has just concluded The Melbourne Infant Feeding, Activity and Nutrition Trial (InFANT) Program, an early obesity prevention intervention targeting first-time parents and their new infants. 

 Louise Baur AM PhD FRACP is Professor in the Discipline of Paediatrics & Child Health (and also the Sydney School of Public Health) at the University of Sydney, and Director of Weight Management Services at The Children’s Hospital at Westmead, the main paediatric institution in Sydney. She is Obesity Theme Leader for the University of Sydney’s new Centre for Obesity, Diabetes & Cardiovascular Disease and is also a Co-Director of the Prevention Research Collaboration based at the University. Louise's research interests include the prevention of childhood obesity, the antecedents of obesity and the metabolic syndrome in childhood, the complications of paediatric overweight and obesity and the effective management of obesity and related disorders in a variety of clinical settings. 
Louise is Founding Editor-in-Chief of the International Journal of Pediatric Obesity, and is a Founding Director of the Australasian Child & Adolescent Obesity Research Network, established in 2002. In 2010 Louise Baur was made a Member of the Order of Australia “for service to medicine, particularly in the field of paediatric obesity as a researcher and academic, and to the community through support for a range of children’s charities”.

Dr. King is Professor of Health Research & Policy and Medicine at Stanford University School of Medicine. A recipient of the Award for Outstanding Scientific Contributions in the Area of Health Psychology from the American Psychological Association, Dr. King's research focuses on the applications of behavioral science theory and ecological models to the development, evaluation, and dissemination of public health interventions aimed at chronic disease prevention and control. In addition to her internationally recognized work in the physical activity and aging area, her current research focuses on expanding the reach and generalizability of evidence-based interventions through the use of state-of-the-art communication technologies; examining person-environment interactions to enhance health; and applying community-based participatory research perspectives to address health disparities among disadvantaged populations. She has served on a number of government taskforces in the U.S. and abroad, including current membership on the U.S. Secretary of the Department of Health and Human Services’ Scientific Advisory Committee on National Health Promotion and Disease Prevention Objectives for 2020 (Healthy People, 2020). Dr. King has been the recipient of a number of National Institutes of Health research grant awards in this area.  She is an elected member of the Academy of Behavioral Medicine Research.

Adrian Bauman is the Sesquicentenary Professor of Public Health in the School of Public Health, University of Sydney, Australia. He is Director of around 20 researchers in the University of Sydney Prevention Research Collaboration. He has research interests in physical activity and health, physical activity epidemiology, and interventions to promote healthy lifestyles. His recent work is in physical activity advocacy,  in policy research, and in translating and disseminating the public health evidence base for action.

Tony Worsley has held senior academic appointments in several universities and CSIRO-Australia. Until recently he was Senior Research Advisor at the Victorian Health Promotion Foundation, and before that he was Professor of Public Health Nutrition and Head of the School of Exercise and Nutrition Sciences, Deakin University. He has been a member of the Australian Academy of Sciences’ Nutrition Committee; Co-Executive Editor of Appetite, and the International Journal of Behavioral Nutrition and Physical Activity. He has wide experience in the evaluation of public health nutrition programs, and in the promotion and maintenance of behaviour change. His current research involves several overlapping areas including behavioural and nutritional epidemiology, food and nutrition policy research, health and nutrition promotion.