Table 1:

Total number of data points, data points/stride and the number of strides in the time series for each normalization procedure and each condition. The first normalization procedure cropped each time series to 8000 data points which resulted in differences in the number of data points/stride and strides between subjects and between trials. The second normalization procedure cropped each time series to 80 strides which resulted in differences in the number of data points and data points/strides between subjects and between trials. The third normalization procedure normalized each time series to included 8000 data points and 80 strides and resulted in an average number of data points/stride of 100 but with variations across the 80 strides. The average standard deviation across all subjects is presented in the table. The fourth normalization procedure normalized each time series to contain 100 data points/stride for all 80 strides.

	Data points	Data points/stride	Number of strides
Condition	Normalization procedure 1
Walk 1.79 m/s	8000	111.7 ± 7.5	71.9 ± 4.8
Run 1.79 m/s	8000	93.0 ± 5.0	86.2 ± 4.3
Walk 2.46 m/s	8000	88.0 ± 4.5	91.1 ± 4.9
Run 2.46 m/s	8000	93.2 ± 9.2	86.5 ± 7.5
	Normalization procedure 2
Walk 1.79 m/s	8840.9 ± 595.2	110.5 ± 7.4	80
Run 1.79 m/s	7375.2 ± 382.1	92.2 ± 4.8	80
Walk 2.46 m/s	6903.6 ± 338.9	86.3 ± 4.2	80
Run 2.46 m/s	7386.6 ± 738.8	92.3 ± 9.2	80
	Normalization procedure 3
Walk 1.79 m/s	8000	100 ± 1.5	80
Run 1.79 m/s	8000	100 ± 4.1	80
Walk 2.46 m/s	8000	100 ± 1.3	80
Run 2.46 m/s	8000	100 ± 1.3	80
	Normalization procedure 4
Walk 1.79 m/s	8000	100 ± 0.0	80
Run 1.79 m/s	8000	100 ± 0.0	80
Walk 2.46 m/s	8000	100 ± 0.0	80
Run 2.46 m/s	8000	100 ± 0.0	80