COVID-19 and working from home-related changes in physical activity in Sydney, Australia.

Issues Addressed: Evidence on how COVID-19 lockdowns impacted physical activity (PA) is mixed. This study explores changes in PA following initial mobility restrictions, and their subsequent relaxation, in a sample of Sydney (Australia) residents using a natural experiment methodology.

Methods: Participants' health and travel behaviours were collected pre-pandemic in late 2019 (n = 1937), with follow-up waves during the pandemic in 2020 (n = 1706) and 2021 (n = 1514).

Interventions Designed to Support Physical Activity and Disease Prevention for Working from Home: A Scoping Review.

Working from home (WfH) has public health implications including changes to physical activity (PA) and sedentary behavior (SB). We reviewed published and grey literature for interventions designed to support PA or reduce SB in WfH contexts. From 1355 published and grey literature documents since 2010, we screened 136 eligible documents and extracted ten intervention studies.

Perceptions of air quality and concern for health in relation to long-term air pollution exposure, bushfires, and COVID-19 lockdown: A before-and-after study.

Background: Air pollution is a major health burden and the leading environmental risk factor for non-communicable diseases worldwide. People's perceptions and concerns about air pollution are important as they may predict protective behaviour or support for climate change mitigation policies.

Methods: This repeat cross-sectional study uses survey data collected from participants in Sydney, Australia in September-November 2019 ( = 1,647) and October-December 2020 ( = 1,458), before and after the devastating 2019/2020 bushfires and first COVID-19 lockdown restrictions in Sydney in 2020.