Table 4.

The narrow walkway (experiment 2): a stride negotiating the obstacle after a short preceding stride

	Stride Length, cm		Stride Height, cm		Stride Duration, s		Swing Duration, s		Swing Proportion in Stride, %		Swing Velocity, m/s
Cat	Unobst	Obst	Unobst	Obst	Unobst	Obst	Unobst	Obst	Unobst	Obst	Unobst	Obst
FM
1	47 ± 1.2	44 ± 0.7	4.2 ± 0.4	5.3 ± 0.1	0.62 ± 0.06	0.65 ± 0.02	0.31 ± 0.02	0.31 ± 0.01	50 ± 5	48 ± 1	1.5 ± 0.1	1.4 ± 0.1
MI
1	53 ± 1.6	47 ± 0.6	3.8 ± 0.4	5.7 ± 0.7	0.62 ± 0.03	0.59 ± 0.02	0.31 ± 0.02	0.29 ± 0.01	50 ± 2	49 ± 1	1.7 ± 0.1	1.6 ± 0.1
2	50 ± 1.6	49 ± 1.5	3.5 ± 0.3	4.5 ± 0.3	0.64 ± 0.03	0.62 ± 0.01	0.32 ± 0.02	0.31 ± 0.01	49 ± 3	50 ± 3	1.6 ± 0.1	1.6 ± 0.1
SF
1	41 ± 1.8	42 ± 0.4	3.6 ± 0.2	4.6 ± 0.5	0.84 ± 0.08	0.90 ± 0.05	0.33 ± 0.02	0.36 ± 0.01	40 ± 3	40 ± 1	1.3 ± 0.1	1.2 ± 0.1
2	41 ± 2.2	39 ± 1.1	3.6 ± 0.2	4.8 ± 0.5	0.84 ± 0.04	0.82 ± 0.03	0.35 ± 0.03	0.33 ± 0.01	42 ± 3	41 ± 2	1.2 ± 0.1	1.2 ± 0.1
3	45 ± 3.1	41 ± 0.1	2.1 ± 0.3	3.4 ± 0.1	0.72 ± 0.02	0.71 ± 0.01	0.31 ± 0.02	0.33 ± 0.01	42 ± 3	46 ± 1	1.5 ± 0.1	1.3 ± 0.1
TI
1	52 ± 1.2	46 ± 0.7	1.9 ± 0.4	2.5 ± 0.2	0.72 ± 0.05	0.70 ± 0.04	0.30 ± 0.02	0.30 ± 0.01	41 ± 2	43 ± 1	1.8 ± 0.1	1.5 ± 0.1
2	51 ± 1.1	46 ± 0.4	2.0 ± 0.4	3.1 ± 0.3	0.74 ± 0.07	0.71 ± 0.03	0.31 ± 0.02	0.32 ± 0.01	42 ± 1	45 ± 1	1.6 ± 0.1	1.4 ± 0.1
3	51 ± 1.6	46 ± 0.7	2.7 ± 0.3	3.6 ± 0.2	0.70 ± 0.06	0.68 ± 0.01	0.30 ± 0.02	0.29 ± 0.01	43 ± 2	44 ± 1	1.7 ± 0.1	1.6 ± 0.1

Values are means ± SD for each cat for numbered sessions as indicated. Obst, a stride that negotiated the obstacle; Unobst, corresponding stride of unobstructed walking. Pairs of categories that were different (P < 0.05, t-test) are in bold.