Fig. 3From: The quality of turning in Parkinson’s disease: a compensatory strategy to prevent postural instability?Minimum distance between the ankles is smaller in subjects with PD than control subjects. Comparison of mean a and minimum b distance between the ankles in healthy and PD subjects across the 3 requested speeds of trial execution. Group means (±SEM) are reported. t-test p-value: *:p < 0.05Back to article page