Fig. 6

Stepwise multivariable linear regression models for associations clinical and turning characteristics of people with PD. (a) As the UPDRS total score, (b) UPDRS part III score, and (c) Hoehn and Yahr stage increases, the outer contralateral temporal coordination parameter increases; (d) as the PIGD score increases, the outer contralateral temporal coordination parameter, maximum anti-phase, and outer step length increases for people with PD when performing the 360° turning task. The tendencies of the regression lines indicate the positive or negative linear correlation of their corresponding correlation coefficients. Significant differences are indicated by p < 0.05; UPDRS Unified Parkinson’s Disease Rating Scale, PIGD Postural instability/gait difficulty