Influence of dual-task on sit-to-stand-to-sit postural control in Parkinson's disease

Highlights • Centre of pressure based parameters were evaluated in healthy controls and individuals with Parkinson's disease (PD) in 5 phases of the sit-to-stand-to-sit (STSTS) sequence. • The parameters assessed were the duration, displacement and velocity of the centre of pressure. • The influence of single- and dual-task conditions on the STSTS sequence was assessed. • The individuals with PD had a reduced postural stability for most of the sequence phases. • The postural instability was impaired the most in the dual-task condition.