The effect of L-theanine supplementation on the immune system of athletes exposed to strenuous physical exercise

Table 5 Selected parameters of complete blood count and the level of total antioxidant capacity before and after supplementation with L-theanine (LTE) or placebo (Pla)

Parameters		Before supplementation			After supplementation			ANOVA
Parameters		Pre-Exercise x ± SD	Post-Exercise x ± SD	Post-Recovery x ± SD	Pre-Exercise x ± SD	Post-Exercise x ± SD	Post-Recovery x ± SD	Exercise	LTE	Exercise x LTE
WBC [10⁹/L]	LTE	6.81 ± 1.47	11.16 ± 1.52*	6.53 ± 1.04†	6.25 ± 1.17	11.12 ± 1.96*	6.46 ± 1.51^†	< 0.0001	0.2236	0.7378
WBC [10⁹/L]	Pla	5.98 ± 1.27	10.1 ± 1.56*	5.75 ± 0.75^†	6.03 ± 1.13	10.83 ± 1.91*	6.0 ± 0.74^†	< 0.0001	0.2236	0.7378
Granulocytes [%]	LTE	46.0 ± 10.81	47.6 ± 3.85	52.6 ± 5.53	46.4 ± 3.69	41.9 ± 5.37	51.3 ± 6.25^†	< 0.0001	0.8803	0.4637
Granulocytes [%]	Pla	48.9 ± 5.68	47.8 ± 6.22	48.8 ± 5.44	45.5 ± 3.58	43.4 ± 7.35	49.9 ± 6.04	< 0.0001	0.8803	0.4637
Lymphocytes [%]	LTE	42.73 ± 7.85	44.59 ± 4.21	38.44 ± 6.04	43.48 ± 3.08	48.36 ± 4.93	38.79 ± 5.35^†	< 0.0001	0.5098	0.5920
Lymphocytes [%]	Pla	43.19 ± 5.32	45.13 ± 6.59	42.83 ± 6.02	44.98 ± 3.39	47.62 ± 6.99	40.17 ± 6.19^†	< 0.0001	0.5098	0.5920
TAC (mmol/l)	LTE	2.36 ± 0.38	1.78 ± 0.40*	2.11 ± 0.55	2.22 ± 0.44	1.80 ± 0.35	2.43 ± 0.41^†	< 0.0001	0.2035	0.5617
TAC (mmol/l)	Pla	2.49 ± 0.22	1.65 ± 0.28*	2.18 ± 0.42	1.87 ± 0.46	1.69 ± 0.24	2.39 ± 0.46	< 0.0001	0.2035	0.5617

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