Table 3.

Multiple Pearson correlation between the parameters of HR and HRV before and after RIPC.

Before RIPCRest (Pre-Serial Sevens Test)										After RIPC Rest (Pre-Serial Sevens Test)
		HR		VLF100	VLF50			LF	HF		HR	VLF100	VLF50			LF	HF
HR		1								HR	1
VLF100		−0.51*		1						VLF100	−0.45*	1
VLF50		−0.41*		0.90**	1					VLF50	−0.46*	0.79**	1
LF		−0.33		0.52**	0.39			1		LF	−0.24	0.54**	0.68**			1
HF		−0.58**		0.84**	0.78**			0.54**	1	HF	−0.71**	0.69**	0.62**			0.62**	1
DFA		0.31		−0.16	−0.02			−0.64**	−0.40*	DFA	0.38	−0.19	−0.20			−0.52*	−0.40*
Serial Sevens Test										Serial Sevens Test
		HR		VLF100	VLF50			LF	HF		HR	VLF100	VLF50			LF	HF
HR		1								HR	1
VLF100		−0.35		1						VLF100	−0.39	1
VLF50		−0.49*		0.64**	1					VLF50	−0.31	0.86**	1
LF		−0.30		0.76**	0.80**			1		LF	−0.16	0.33	0.38			1
HF		−0.71**		0.61**	0.65**			0.54**	1	HF	−0.57**	0.16	0.22			0.40	1
DFA		0.56**		−0.46*	−0.23			−0.32	−0.66**	DFA	0.30	0.14	0.15			−0.50*	−0.63*
Rest (Post-Serial Sevens Test)										Rest (Post-Serial Sevens Test)
		HR		VLF100	VLF50			LF	HF		HR	VLF100	VLF50			LF	HF
HR		1								HR	1
VLF100		−0.58**		1						VLF100	−0.54**	1
VLF50		−0.52*		0.87**	1					VLF50	0.93**	0.79**	1
LF		−0.29		0.60**	0.78**			1		LF	−0.11	0.54**	0.62**			1
HF		−0.76**		0.71**	0.54**			0.43*	1	HF	−0.61**	0.63**	0.60**			0.69**	1
DFA		0.18		0.04	−0.06			−0.36	−0.42*	DFA	0.25	−0.05	0.05			−0.35	−0.49*
Hyperventilation											Hyperventilation
	HR		VLF100			VLF50	LF		HF		HR	VLF100		VLF50	LF			HF
HR	1									HR	1
VLF100	−0.51*		1							VLF100	−0.47*	1
VLF50	−0.34		0.77**			1				VLF50	−0.46*	0.78**		1
LF	−0.57*		0.10			0.25	1			LF	−0.34	−0.10		0.13	1
HF	−0.62**		0.75**			0.47*	0.62**		1	HF	−0.57**	0.51*		0.34	0.40			1
DFA	0.73**		−0.41*			−0.20	0.62**		−0.58**	DFA	0.49*	−0.05		0.26	−0.44*			−0.50*
Rest (Post-Hyperventilation)											Rest (Post-Hyperventilation)
	HR		VLF100			VLF50	LF		HF		HR	VLF100		VLF50	LF			HF
HR	1									HR	1
VLF100	−0.59**		1							VLF100	−0.44*	1
VLF50	−0.69**		0.61**			1				VLF50	−0.36	0.93**		1
LF	−0.37		0.05			0.53*	1			LF	−0.16	0.35		0.30	1
HF	−0.74**		0.58**			0.64**	0.56**		1	HF	−0.62**	0.42*		0.37	0.65**			1
DFA	0.35		−0.01*			−0.25	−0.73**		−0.52**	DFA	0.21	0.27		0.38	−0.50*			−0.52**

VLF100 – very low frequency (0.005–0.015 Hz), VLF50 – very low frequency (0.015–0.025 Hz), LF – low frequency (0.08–0.12 Hz), HF – high frequency (0.15–0.35 HZ), DFA – detrended fluctuation analysis.

The correlation is calculated for RIPC group (n = 22). Statistical significance of the correlation: *P < 0.05, **P < 0.01.