Characteristics of men and women in the 8 HALCyon cohorts.

1Number of participants with a measure of BMI and at least one valid physical performance measure.2Grip strength measured at wave 1 (as well as wave 2). Performance tests measured only at wave 2.3Physical performance tests measured at either wave 1 or wave 2. LBC1921 = Lothian Birth Cohort 1921, CaPs = Caerphilly Prospective Study, HCS = Hertfordshire cohort study, HAS = Hertfordshire Ageing Study, ELSA = English Longitudinal Study of Ageing, ABC1936 = Aberdeen Birth Cohort 1936, NSHD = MRC National Survey of Health and Development.