All AIBL Study participants were asked to complete the International Physical Activity Questionnaire (IPAQ) (Craig et al., 2003) and the Food Frequency Questionnaire (FFQ) (Hodge et al.,10 2000).

A subset of the Perth cohort had their physical activity recorded for seven days by a computerized ActiGraph Uni-axial Accelerometer.

A subgroup also underwent low dose radioactive Dual Energy X-Ray Absorptiometry (DEXA) scans to assess body composition, including fluid, bone, adipose tissue.