Falls are one the most disabling features of Parkinson’s disease (PD). Up to 70% of individuals with PD experience a fall annually, and 25–50% fall twice or more in a year (1–4). Repeated falls can lead to devastating outcomes, such as functional limitations, physical deconditioning, increased chances of institutionalization and a higher mortality rate (5, 6). One large-scale prospective study on older adults showed that multiple fallers had significantly greater functional decline than single fallers (7). Therefore, repeated falls are a serious problem, and early identification of potential recurrent fallers is needed. Parkinsonian fallers have been shown to have poor balance ability; they have a lower Berg’s Balance Score (BBS) (8), shorter 1-leg stance time (9), poor leaning stability (10), more postural sway (2), and poorer Romberg tests (1) than their non-falling counterparts. Ideally, balance impairment could be used to predict future falls. However, in previous studies, only poor leaning stability combined with fall history, gait freezing, and knee muscle weakness were found to predict future falls in people with PD (10). It is possible that postural instability is multi-factorial and balance measures that evaluate one aspect of balance performance may not be sensitive enough to predict PD fallers.