Influence of aerobic exercise on the cognitive and social functions of elderly patients with schizophrenia

Table 2 Comparison of Positive and Negative Syndrome Scale scores pre- and post-treatment, mean ± SD

Variable	Group	Control group (n = 72)	Observation group (n = 86)	t value	P value
Total score	Pre-treatment	81.61 ± 7.29	81.29 ± 6.26	0.30	0.767
	Post-treatment	68.28 ± 5.32c	63.49 ± 4.84c	5.92	< 0.001
Positive	Pre-treatment	19.15 ± 2.68	19.55 ± 2.17	-1.02	0.309
	Post-treatment	16.64 ± 2.27c	15.83 ± 2.04c	2.37	0.019
Negative	Pre-treatment	18.79 ± 2.58	19.02 ± 2.16	-0.61	0.540
	Post-treatment	15.46 ± 2.30c	13.09 ± 1.86c	7.14	< 0.001
General	Pre-treatment	43.67 ± 5.80	42.72 ± 5.29	1.07	0.286
	Post-treatment	36.18 ± 4.57c	34.57 ± 4.29c	2.28	0.024

^cP < 0.001 vs pre-treatment in the same group.