Table 1.

Mean (standard deviation) of the observed person-specific mean step times (top) and step lengths (bottom) for the three participant groups walking under each of the three route conditions, excluding outlier values

	Step time, s
	I-ROUTE	U-ROUTE	S-ROUTE	Step time comparison
controls	0.576 (0.052)	0.588 (0.053)	0.585 (0.060)	U versus I: p = 0.064
				S versus I: p = 0.184
				S versus U: p = 0.780
PCA	0.691* (0.075)	0.743* (0.090)	0.724* (0.076)	U versus I: p = 0.016
				S versus I: p = 0.062
				S versus U: p = 0.182
tAD	0.730* (0.122)	0.803* (0.197)	0.759* (0.153)	U versus I: p = 0.241
				S versus I: p = 0.647
				S versus U: p = 0.386