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Research
Interpregnancy interval and adverse birth outcomes: a population-based cohort study of twinsTo investigate associations between interpregnancy intervals (IPIs) and adverse birth outcomes in twin pregnancies.
Research
Investigating the walkability of primary, secondary and K-12 schools across metropolitan Perth, Western AustraliaHaving a walkable built environment is important to encourage active school transport. The aim of this study was to measure the walkability of all Perth, Western Australian schools and investigate whether differences in walkability exist by school type, socioeconomic status and/or subregion.
Research
Associations between natural blue and green space and preschool children's movement behavioursNatural outdoor environments provide important settings for children to engage in physical activity. It is unclear if these relationships also exist in preschool aged children. We examined associations between amount and type of neighbourhood vegetation and blue space, proximity to the beach and preschooler's device-measured movement behaviours.

Our Child Physical Activity, Health and Development team focuses on improving children’s physical activity levels, health and development. We work to uncover the best environments, policies and programs to facilitate physically active lifestyles for lifelong health and wellbeing.
Research
Play Active physical activity policy intervention and implementation support in early childhood education and care: results from a pragmatic cluster randomised trialPolicy interventions to increase physical activity in early childhood education and care (ECEC) services are effective in increasing physical activity among young children. However, a large proportion of ECEC services do not have nor implement a physical activity policy.
Research
Awake and Alert: Examining the Portrayal of Energy Drinks on TikTokEnergy drinks (EDs) are not recommended for minors' consumption due to a myriad of health risks, but marketing initiatives persist. This study explored the promotion of EDs on TikTok, a platform frequented by children and adolescents.
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Status and Trends of Physical Activity Surveillance, Policy, and Research in 164 Countries: Findings From the Global Observatory for Physical Activity-GoPA! 2015 and 2020 SurveysPhysical activity (PA) surveillance, policy, and research efforts need to be periodically appraised to gain insight into national and global capacities for PA promotion. The aim of this paper was to assess the status and trends in PA surveillance, policy, and research in 164 countries.
Research
Association between vaccination status, symptom identification and healthcare use: Implications for test negative design observational studiesTo test the internal validity of the test-negative design (TND) by investigating associations between maternal influenza vaccination, and new virus detection episodes (VDEs), acute respiratory illness, and healthcare visits in their children.
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Energy drink intake is associated with insomnia and decreased daytime functioning in young adult femalesTo investigate the association between energy drink (ED) use and sleep-related disturbances in a population-based sample of young adults from the Raine Study.
Research
Cohort Profile: HABITAT-a longitudinal multilevel study of physical activity, sedentary behaviour and health and functioning in mid-to-late adulthoodThe benefits of physical activity in reducing the risk of non-communicable diseases are well documented. Physical inactivity contributes to 6–10% of the burden of coronary heart disease, type 2 diabetes, and breast and colon cancers.