Step length, m
	I-ROUTE	U-ROUTE	S-ROUTE	Step length comparison
controls	0.738 (0.128)	0.689 (0.132)	0.688 (0.127)	U versus I: p = 0.003
				S versus I: p = 0.005
				S versus U: p = 0.861
PCA	0.503* (0.101)	0.405* (0.122)	0.430* (0.111)	U versus I: p = 0.003
				S versus I: p = 0.003
				S versus U: p = 0.131
tAD	0.548* (0.073)	0.476* (0.143)	0.482* (0.104)	U versus I: p = 0.013
				S versus I: p = 0.013
				S versus U: p = 0.879

For each participant group, p-values are for Wilcoxon matched-pairs signed-rank tests comparing route shapes. Asterisks denote group differences (versus controls: *p ≤ 0.001).