Nigg, CarinaCarinaNigg0000-0002-0225-1503Oriwol, DorisDorisOriwolWunsch, KathrinKathrinWunschBurchartz, AlexanderAlexanderBurchartzKolb, SimonSimonKolbWorth, AnnetteAnnetteWorthWoll, AlexanderAlexanderWollNiessner, ClaudiaClaudiaNiessner2024-10-252024-10-252021https://boris-portal.unibe.ch/handle/20.500.12422/167625Children in Germany showed positive physical activity changes during the first Covid-19 lockdown in April 2020, but it is unclear how the changes relate to population density, which we investigated in a longitudinal sample of 1711 youth (4-17 years). For each ten citizens more per km2, less positive physical activity changes were observed. For example, a child living in an area with 100 citizens/km2 increased daily life physical activity by 44.50 min/day, whereas a child living in an area with 3000 citizens/km2 only engaged in an additional 9.70 min/day. Policymakers should ensure that youth in densely populated areas have access to physical activity opportunities during the pandemic.en700 - Arts::790 - Sports, games & entertainmentarticle10.48350/1831523423321010.1016/j.healthplace.2021.102619