Table 4.

Changes in morning serum cortisol levels (C) in the experimental and control groups following the 8-week training program.

Cortisol nmol/L	Experimental Group					Control Group					Between Groups
	Mean	Median	Min	Max	SD	Mean	Median	Min	Max	SD	t1	p	Cohen’s d
Pre	460	428	334	666	93	390	406	201	593	113	2.07	0.045	0.681
Post	405	424	274	527	85	385	378	166	702	159	0.47	0.640	0.171
differences	−55	−4	−60	−139	118	−5	−28	−35	109	137	−1.21	0.235	0.391
Between examinations	t2 = −2.00, p < 0.061, Cohen’s d = 0.466					t2 = −0.13, p = 0.902, Cohen’s d = 0.037

t₁—Student’s t-test for independent samples; t₂—Student’s t-test for dependent samples; p—likelihood ratio; significant values are in bold.