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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
Exploring variation in beach environments and physical activity by neighbourhood socioeconomic status in Perth, AustraliaBeaches are important settings for physical activity, with their quality (safety, amenities, aesthetics) influencing how well they support health. The quality of beaches may differ across neighbourhoods, with higher socioeconomic status neighbourhoods having disproportionately better access to beaches. This study examined the attributes of and activities taking place in beaches by neighbourhood socioeconomic status.
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Developmental trends in young children’s device-measured physical activity and sedentary behaviourKnowledge of developmental trends in meeting age-specific 24-hour movement behaviour guidelines is lacking. This study describes developmental trends in device-measured physical activity and sedentary time over a three-year period among Western Australian children aged two to seven years, including differences between boys and girls.
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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.
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A great way to bring up health behaviour topics at playgroup: a qualitative evaluation of the Healthy Conversations @ Playgroup programThe early years is a critical stage to establish optimal nutrition and movement behaviours. Community playgroups are a relaxed environment for parents with a focus on social connection and supporting parents in their role as 'First Teachers'. Playgroups are therefore an opportunistic setting to promote health behaviours in the early years.
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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.

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
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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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.
Research
Children's neighbourhood physical environment and early development: an individual child level linked data studyThe neighbourhood physical environment has a weak but significant association with early childhood development