Age and gender differences in physical capability levels from mid-life onwards: the harmonisation and meta-analysis of data from eight UK cohort studies

Rachel Cooper, Rebecca Hardy, Avan Aihie Sayer, Yoav Ben-Shlomo, Kate Birnie, Cyrus Cooper, Leone Craig, Ian J Deary, Panayotes Demakakos, John Gallacher, Geraldine McNeill, Richard M Martin, John M Starr, Andrew Steptoe, Diana Kuh, HALCyon Study Team