A prospective study of the impact of COVID-19-related restrictions on activities and mobility upon physical activity, travel behaviour and attitudes

•Physical activity, bus use and car use declined during/soon after restrictions.•Physical activity and car use recovered within six months, bus use did not.•Retrospective surveys overstated declines in bus use and active transport, self-reports understated declines in physical activity.•Strategies are needed to maintain physical activity during restrictions.•Efficient public transport may help replenish ridership after pandemic.