Related Experiment Video
Updated: Oct 9, 2025
Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data
Published on: July 27, 2018
Changes in physical activity by context and residential greenness among recent retirees: Longitudinal GPS and
S Pasanen1, J I Halonen2, C Gonzales-Inca3
1University of Turku and Turku University Hospital, Department of Public Health, Turku, Finland; University of Turku and Turku University Hospital; Centre for Population Health Research, Turku, Finland.
Abstract:
This study examined the changes in accelerometer-measured physical activity by GPS-measured contexts among Finnish retirees (n = 45 (537 measurement days)) participating in a physical activity intervention. We also assessed whether residential greenness, measured with Normalized Difference Vegetation Index, moderated the changes. Moderate-to-vigorous physical activity (MVPA) increased at home by 7 min/day, (P < 0.001) and during active travel by 5 min/day (P = 0.03). The participants with the highest vs. lowest greenness had 25 min/day greater increase in MVPA over the follow-up (P for Time*Greenness interaction = 0.04). In conclusion, retirees participating in the intervention increased their MVPA both at home and in active travel, and more so if they lived in a greener area.
