Table 3.

The narrow walkway (experiment 2): a stride shortened before the obstacle

	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	Paw-to-Obstacle Distance, cm
FM
1	47 ± 1.2	42 ± 0.5	4.3 ± 0.3	4.2 ± 0.2	0.62 ± 0.03	0.63 ± 0.06	0.31 ± 0.02	0.28 ± 0.02	50 ± 1	44 ± 1	1.6 ± 0.1	1.5 ± 0.1	4.9 ± 1.4
MI
1	53 ± 1.5	46 ± 1.7	3.4 ± 0.4	3.4 ± 0.2	0.62 ± 0.03	0.58 ± 0.02	0.31 ± 0.02	0.27 ± 0.01	50 ± 1	47 ± 1	1.7 ± 0.1	1.7 ± 0.1	7.2 ± 1.0
2	50 ± 1.7	45 ± 1.6	3.5 ± 0.2	3.5 ± 0.1	0.62 ± 0.03	0.60 ± 0.01	0.31 ± 0.02	0.29 ± 0.01	50 ± 3	49 ± 1	1.6 ± 0.1	1.6 ± 0.1	4.5 ± 1.7
SF
1	40 ± 2.3	36 ± 0.3	3.8 ± 0.5	3.4 ± 0.1	0.85 ± 0.04	0.88 ± 0.05	0.35 ± 0.02	0.33 ± 0.01	42 ± 2	38 ± 2	1.1 ± 0.1	1.1 ± 0.5	3.4 ± 1.0
2	39 ± 2.9	34 ± 3.2	3.6 ± 0.3	3.9 ± 0.7	0.85 ± 0.06	0.81 ± 0.05	0.37 ± 0.02	0.32 ± 0.03	43 ± 2	39 ± 1	1.1 ± 0.1	1.1 ± 0.1	4.3 ± 1.5
3	45 ± 1.3	41 ± 1.3	2.5 ± 0.3	2.3 ± 0.7	0.72 ± 0.04	0.66 ± 0.01	0.31 ± 0.01	0.26 ± 0.01	43 ± 1	40 ± 1	1.5 ± 0.1	1.6 ± 0.1	4.7 ± 1.5
TI
1	51 ± 1.4	44 ± 0.3	2.0 ± 0.6	1.6 ± 0.2	0.71 ± 0.05	0.68 ± 0.02	0.32 ± 0.02	0.29 ± 0.04	45 ± 1	42 ± 1	1.6 ± 0.1	1.5 ± 0.1	4.3 ± 0.7
2	52 ± 1.2	43 ± 0.8	2.7 ± 0.4	3.1 ± 0.3	0.70 ± 0.03	0.60 ± 0.06	0.30 ± 0.01	0.25 ± 0.02	42 ± 2	41 ± 2	1.8 ± 0.1	1.8 ± 0.1	3.2 ± 0.8
3	51 ± 1.2	47 ± 2.3	2.7 ± 0.2	2.6 ± 0.2	0.71 ± 0.03	0.68 ± 0.02	0.31 ± 0.01	0.28 ± 0.01	43 ± 1	41 ± 1	1.7 ± 0.1	1.7 ± 0.1	6.3 ± 1.6

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