Parkinson's disease (PD) is a progressive neurological disorder caused by the loss of dopamine producing cells in the substantia nigra, which is located in the basal ganglia. As dopamine assists with transmitting and modulating signals in the brain, ongoing dopamine depletion causes motor, autonomic and cognitive impairments (Magrinelli et al., 2016). PD is characterised by motor symptoms that are associated with movement (e.g. bradykinesia, rigidity, postural instability, tremor) (Magrinelli et al., 2016), and nonmotor symptoms (e.g. mood/cognitive problems, depression, pain, sleep problems) (Schapira et al., 2017). Motor symptoms are considered the clinical manifestation of dopa-mine insufficiency and used for PD diagnosis (Chenoweth, Sheriff, McAnally, & Tait, 2013;Queen, 2017;Schapira, Chaudhuri, & Jenner, 2017). However, non-motor symptoms can become more debilitating than motor symptoms as PD progresses (Chenoweth et al., 2013;Schapira et al., 2017).A recent epidemiological study indicated up to 212,000 people (1 in 117 people aged over 50 years) are living with PD in Australia, with more than one million caregivers, family and friends directly impacted by the condition (Ayton et al., 2019).