Table 6.

Correlation coefficients between the indicators of perceived stress and anxiety, as well as cognitive performance and the level of cortisol.

Stress and Anxiety Indicators	Cortisol—Before Fasting		Cortisol—After Fasting
Before Fasting	Rest	Exercise	Rest	Exercise
PSS	−0.54	−0.15	−0.59	−0.54
STAI–State	−0.44	−0.10	−0.31	−0.29
STAI–Trait	−0.67	−0.28	−0.49	−0.25
After fasting
PSS	−0.41	−0.03	−0.43	−0.16
STAI–State	−0.57	−0.24	−0.15	−0.25
STAI–Trait	−0.69	−0.25	−0.32	−0.13
Efficiency indicators of cognitive processes	C—Before fasting		C—After fasting
Before fasting	Rest	Exercise	Rest	Exercise
CFT-20R	0.25	0.01	0.06	−0.13
CTT-1 time	−0.62	−0.20	−0.49	−0.29
CTT-2 time	−0.45	−0.18	−0.49	−0.37
CTT-Interference index	0.20	0.04	−0.02	−0.10
After fasting
CFT-20R	0.34	−0.05	0.25	0.14
CTT-1 time	−0.54	−0.15	−0.39	−0.14
CTT-2 time	−0.36	−0.12	−0.36	−0.16
CTT-Interference index	0.50	0.17	0.25	0.10

Note: correlations with p < 0.05 are bolded.