Table 1. Stride spatiotemporal parameters.

		Condition
Parameter		BASE	SI	SIIK	SIPF	SIPFIK
Step Length (m)	Amputated	0.65 ± 0.10	0.71 ± 0.09	0.71 ± 0.16	0.71 ± 0.10	0.70 ± 0.03
	Intact	0.55 ± 0.05	0.58 ± 0.04	0.59 ± 0.05	0.58 ± 0.05	0.56 ± 0.04
Step Time (s)	Amputated	0.75 ± 0.04	0.69 ± 0.07	0.67 ± 0.05	0.69 ± 0.06	0.68 ± 0.07
	Intact	0.65 ± 0.06	0.63 ± 0.06	0.62 ± 0.11	0.62 ± 0.08	0.62 ± 0.08
Stance Time (s)	Amputated	0.88 ± 0.05	0.83 ± 0.12	0.80 ± 0.11	0.84 ± 0.09	0.84 ± 0.08
	Intact §	0.97 ± 0.08	0.89 ± 0.11	0.87 ± 0.12	0.88 ± 0.10	0.87 ± 0.09
Swing Time (s)	Amputated	0.52 ± 0.04	0.49 ± 0.04	0.49 ± 0.06	0.48 ± 0.05	0.46 ± 0.03
	Intact	0.53 ± 0.19	0.43 ± 0.06	0.44 ± 0.06	0.44 ± 0.05	0.44 ± 0.04
Cycle Time (s)		1.39 ± 0.09	1.32 ± 0.17	1.30 ± 0.18	1.31 ± 0.14	1.31 ± 0.11
Speed (m/s)		0.87 ± 0.10	0.99 ± 0.17	1.04 ± 0.25	1.00 ± 0.18	1.01 ± 0.15
Stride Length (m)		1.20 ± 0.06	1.29 ± 0.09	1.33 ± 0.15	1.30 ± 0.11	1.31 ± 0.08
Stride Width (m)		0.21 ± 0.04	0.20 ± 0.02	0.21 ± 0.03	0.21 ± 0.03	0.22 ± 0.03

^§ Significant effect of increasing ankle stiffness