Physical function: Balance, mobility and lower body strength were assessed. Balance was assessed using the Functional Reach test, a measure of maximal forward reach in centimetres (23). Basic functional mobility was assessed using the Timed Up and Go test, which records the time taken (in seconds) to stand up from a standard arm chair, walk 3 m, turn, walk back to the chair and sit down again (24). Lower body strength was measured using the Sit-to-Stand test, which measures the number of chair-rises in a 10-second period