Table 2.

Correlations between neurohumoral biomarkers and hemodynamics in the supine position and in response to HUT

	All 48 Subjects		HUT(−) Subjects		HUT(+) Subjects
	Supine position	HUT	Supine position	HUT	Supine position	HUT
Norepinephrine
HR-supine		0.39†				0.39*
HR-HUT		0.56‡				0.59‡
Epi-supine	−0.30*
Epi-HUT	−0.39†
AVP-supine	0.41†	0.33*
ANG-(1–7)-supine	−0.43†
ANG-(1–7)-HUT	−0.42†	−0.34*		−0.58†
Epi
MAP-HUT		−0.42†
HR-supine	0.35†
AVP-HUT	0.38†
Ang-(1–7)-supine		0.30*				0.43*
Ang-(1–7)-HUT		0.33*				0.51†
AVP
MAP-supine	0.43†				0.43†
MAP-HUT		−0.46‡				−0.46‡
ANG II
HR-supine	0.34*
Renin-supine	0.47‡	0.41‡		0.57*		0.61†
Renin-HUT	0.45†	0.44†				0.51†
Aldo-supine	0.36†	0.41†				0.39*
Aldo-HUT	0.35*	0.49†		0.52*		0.49†
Renin
HR-supine		0.31*
Aldo-supine	0.57‡	0.35†			0.58‡	0.4*
Aldo-HUT	0.52†	0.32*	0.52*		0.50†

HR, heart rate; Epi, epinephrine; AVP, arginine vasopressin; MAP, mean arterial pressure; Aldo, aldosterone.

Pearson's correlation test was used for normally distributed data sets. Spearman's correlation test was used for data sets that were not normally distributed.

^*P < 0.05;

^†P ≤ 0.01;

^‡P ≤ 0.001.