Table 2 Immune variables in 18 healthy athletes before and after one month of administration of Lactobacillus acidophilus.

	Before		After		Signrank test
	Median	95% CI	Median	95% CI	Z value	p Value
Saliva IgA (mg/l)	59	49 to 71	51	47 to 65	0.697	0.49
Saliva IgA/osmolality ratio	0.97	0.69 to 1.09	0.80	0.70 to 1.04	0.022	0.98
Saliva IFNγ (pg/ml)	10	8 to 21	15.1	8.8 to 23.0	−2.127	0.03
Whole blood culture secretion
IFNγ (pg/ml)	11.9	7.8 to 57.8	26.8	12.2 to 43.3	−1.071	0.28
IL4 (pg/ml)	28.1	12.4 to 52.8	18	12.3 to 27.8	1.327	0.18
IL12 (pg/ml)	287.6	172.1 to 352.6	321.2	250.3 to 356.0	−0.240	0.81

IFN, Interferon; IL, interleukin.