Journal article

Physical activity and DNA methylation–based markers of ageing in 6208 middle-aged and older Australians: cross-sectional and longitudinal analyses

HT Zheng, DL Li, MWC Lou, AM Hodge, MC Southey, GG Giles, RL Milne, BM Lynch, PA Dugué

Geroscience | SPRINGER | Published : 2025

Abstract

Epigenetic age quantifies biological age using DNA methylation information and is a potential pathway by which physical activity benefits general health. We aimed to assess the cross-sectional and longitudinal associations between physical activity and epigenetic age in middle-aged and older Australians. Blood DNA methylation data for 6208 participants (40% female) in the Melbourne Collaborative Cohort Study (MCCS) were available at baseline (1990–1994, mean age, 59 years) and, of those, for 1009 at follow-up (2003–2007, mean age, 69 years). Physical activity measurements (weighted scores at baseline and follow-up and total MET hours per week at follow-up) were calculated from self-reported ..

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Grants

Awarded by Cancer Council Victoria


Funding Acknowledgements

Open Access funding enabled and organized by CAUL and its Member Institutions. Melbourne Collaborative Cohort Study (MCCS) cohort recruitment was funded by VicHealth and Cancer Council Victoria. The MCCS was further supported by Australian National Health and Medical Research Council grants 209057, 396414, and 1074383 and by infrastructure provided by Cancer Council Victoria. The nested case-control methylation studies were supported by the NHMRC Grants 1011618, 1026892, 1027505, 1050198, 1043616, and 1074383. Cases and their vital status were ascertained through the Victorian Cancer Registry and the Australian Institute of Health and Welfare, including the Australian Cancer Database. The longitudinal methylation study was supported by the NHMRC grants 1088405 and 1106016. MCS is a recipient of a NHMRC L3 Investigator Fellowship (GNT2017325).