Associations between parental and child physical activity and screen time during the first wave of the COVID-19...

The COVID-19 pandemic interrupted daily routines but also provided family time opportunities. Our study estimated the associations between moderate-to-vigorous physical activity (MVPA) and screen time (ST) among parent-child dyads early during the first wave of the pandemic. Our secondary analysis included survey data (n = 329 parent-child dyads) gathered from a random sample of households (Calgary, Canada) between April and June 2020. MVPA, ST, and sociodemographic characteristics of one parent and one child or adolescent (5-17 years) per family were captured. Covariate-adjusted logistic regression models estimated the associations (odds ratios, OR) between parent and child MVPA and ST. The sample included 149 girls and 180 boys (mean age: 10.7, SD 4.0 years). Among parents (mean age: 42.7, SD 8.9 years), 67.2% were female. Parent weekly hours of MVPA were associated with children achieving ≥60 min of MVPA 7 days/week (OR: 1.05, 95% CI: 1.01, 1.09). Parent weekly hours of recreational ST were associated with children being less likely to achieve ≥60 min of MVPA (OR: 0.97, 95% CI: 0.95, 0.99) and more likely to participate in at least one ST activity for ≥2 h day (OR: 1.12, 95% CI: 1.04, 1.19). During the COVID-19 pandemic, parent movement behaviours remained key correlates of children's daily MVPA and ST.