Abstract: The environments in which young and middle-aged adults live may influence their physical activity (PA) behaviours. These associations are less clear among older adults. We estimated cross-sectional and prospective associations of population density, junction density, and land use mix and perceived active living environments with accelerometer-assessed PA in a cohort of older adults. Adults living in more dense and mixed neighbourhoods had less optimal activity profiles at baseline and less optimal changes in activity. Better perceptions were associated with more overall PA at baseline. Interventions for older adults may wish to target individuals living in more dense and mixed neighbourhoods. ; The EPIC-Norfolk study (DOI 10.22025/2019.10.105.00004) has received funding from the Medical Research Council (MR/N003284/1 and MC-UU_12015/1) and Cancer Research UK (C864/A14136). This work was supported by the Lifelong Health and Wellbeing Cross-Council Programme (MR/K025147/1 to SJG and AJ), the Medical Research Council (MRC) (MC_UU_12015/4 to SJG, MC_UP_12015/6 to JP, and MC_UU_12015/3 to SB), the Canadian Institutes of Health Research (FRN 146766; Fellowship to SH), the Centre for Diet and Activity Research (CEDAR), a UKCRC Public Health Research Centre of Excellence which is funded by the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the National Institute for Health Research (NIHR), and the Wellcome Trust (087636/Z/08/Z; ES/G007462/1; MR/K023187/1), and the Cambridge Biomedical Research Centre which is funded by NIHR (IS-BRC-1215-20014). The University of Cambridge has received salary support in respect of SJG from the NHS in the East of England through the Clinical Academic Reserve. The views expressed are those of the authors and not necessarily those of the NHS or the Department of Health. NJW, SJG and KTK are/were NIHR Senior Investigators.
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