Table 1 Open in new tab Zero-order...

	lnRMSSD	lnSDNN	lnHF-HRV	lnLF-HRV
NPSS total	0.27^b	0.19	0.23^a	0.08
NPSS Social engagement	0.23^a	0.19^a	0.21^a	0.15
NPSS Compassion	0.005	−0.04	0.05	−0.12
NPSS Bodily sensations	0.30^c	0.19^a	0.21^a	0.06
Age	0.04	0.11	−0.01	0.17
Gender (0 = women, 1 = men)	0.30^c	0.37^c	0.20^a	0.41^c
BMI (kg/m²)	0.14	0.08	0.08	0.03
Smoking (no vs yes)	0.07	0.12	0.02	0.07
Regular physical activity (no vs yes)	0.15	0.17	0.09	0.21^a

	lnRMSSD	lnSDNN	lnHF-HRV	lnLF-HRV
NPSS total	0.27^b	0.19	0.23^a	0.08
NPSS Social engagement	0.23^a	0.19^a	0.21^a	0.15
NPSS Compassion	0.005	−0.04	0.05	−0.12
NPSS Bodily sensations	0.30^c	0.19^a	0.21^a	0.06
Age	0.04	0.11	−0.01	0.17
Gender (0 = women, 1 = men)	0.30^c	0.37^c	0.20^a	0.41^c
BMI (kg/m²)	0.14	0.08	0.08	0.03
Smoking (no vs yes)	0.07	0.12	0.02	0.07
Regular physical activity (no vs yes)	0.15	0.17	0.09	0.21^a

Table 1

Zero-order Pearson correlations between the components of psychological safety (NPSS²¹); sociodemographic variables, and different HRV indices.

	lnRMSSD	lnSDNN	lnHF-HRV	lnLF-HRV
NPSS total	0.27^b	0.19	0.23^a	0.08
NPSS Social engagement	0.23^a	0.19^a	0.21^a	0.15
NPSS Compassion	0.005	−0.04	0.05	−0.12
NPSS Bodily sensations	0.30^c	0.19^a	0.21^a	0.06
Age	0.04	0.11	−0.01	0.17
Gender (0 = women, 1 = men)	0.30^c	0.37^c	0.20^a	0.41^c
BMI (kg/m²)	0.14	0.08	0.08	0.03
Smoking (no vs yes)	0.07	0.12	0.02	0.07
Regular physical activity (no vs yes)	0.15	0.17	0.09	0.21^a

	lnRMSSD	lnSDNN	lnHF-HRV	lnLF-HRV
NPSS total	0.27^b	0.19	0.23^a	0.08
NPSS Social engagement	0.23^a	0.19^a	0.21^a	0.15
NPSS Compassion	0.005	−0.04	0.05	−0.12
NPSS Bodily sensations	0.30^c	0.19^a	0.21^a	0.06
Age	0.04	0.11	−0.01	0.17
Gender (0 = women, 1 = men)	0.30^c	0.37^c	0.20^a	0.41^c
BMI (kg/m²)	0.14	0.08	0.08	0.03
Smoking (no vs yes)	0.07	0.12	0.02	0.07
Regular physical activity (no vs yes)	0.15	0.17	0.09	0.21^a

^aP < .10,

^bP < .05,

^cP < .01. Significant associations are printed in bold. Abbreviation: NPSS, neuroception of psychological safety scale²¹; N = 76.