Table 6.

Changes of creatine kinase (CK[mU/ml]) activity in plasma of study participants

		SE	SC	OE	OC	p (between groups)
Test I	1 h before	274,1 ± 145,3	196,9 ± 84,34	216,7 ± 109,0	340,0 ± 246,2	0.454
	1 h after	363,1 ± 176,5	302,1 ± 101,2	273,0 ± 113,1	449,8 ± 270,3	0.496
	24 h after	785,3 ± 307,7	833,6 ± 437,3	669,4 ± 469,3	845,8 ± 290,3	0.475
	p (inside.groups)	0.001	0.000	0.012	0.006
Test II	1 h before	283,4 ± 146,7	286,4 ± 160,8	207,6 ± 44,93	437,3 ± 144,7	0.056
	1 h after	366,0 ± 165,2	356,3 ± 171,2	272,7 ± 49,91	560,3 ± 209,0	0.055
	24 h after	1044 ± 606,0	900,0 ± 277,3	953,1 ± 626,8	971,2 ± 244,4	0.834
	p (inside.groups)	0.001	0.000	0.001	0.002
p (Test I vs. Test II)	1 h before	1.000	0.093	0.735	0.463
	1 h after	0.917	0.508	0.735	0.917
	24 h after	0.237	0.721	0.612	0.345

Results are shown as means ± SEM (SE – experimental group with suboptimal level of vitamin D, SC – control group with suboptimal level of vitamin D, OE – experimental group with optimal lever of vitamin D, OC – control group with optimal level of vitamin D); p (between groups) Kruskal-Wallis test; p (inside groups) Friedman test for dependent means; p (Test I vs Test II) Wilcoxon test