Table 1.

Shuttle box test (x̅ ± s)

Group (n)	Shock times (/min)		Active escape times (/min)
	Week 4	Week 8	Week 4	Week 8
Group A (n)	55.4 ± 8.1	52.0 ± 9.0	82.4 ± 7.2	85.6 ± 8.1
Group B (n)	92.2 ± 8.3a	98.1 ± 7.2a	55.2 ± 4.8a	51.7 ± 6.8a
Group C (n)	72.2 ± 7.1a,b,c	73.8 ± 6.2a,b,c	72.5 ± 6.3a,b,c	72.0 ± 5.1a,b,c
Group D (n)	83.2 ± 6.8a,c	85.5 ± 6.9a,c	67.2 ± 6.1a,c	67.3 ± 5.8a,c

^acompared with group A, P < 0.05;

^bcompared withgroup D, P < 0.05;

^ccompared with group B, P < 0.05.