. Author manuscript; available in PMC: 2011 Nov 16.

Published in final edited form as: J Am Coll Cardiol. 2010 Nov 16;56(21):1720–1727. doi: 10.1016/j.jacc.2010.04.064

Table 2.

Correlation Coefficients among Variables

		Resting HR	Peak HR during EX	Av. Watts during EX	Baseline NE	Baseline EPI	Pre- to post- exercise NE	Pre- to post- exercise EPI	Pre- to post- exercise CTX (10nM ISO)
BDI	Non-HF	.394^**	.053	.003	−.076	.064	.081	−.139	−.179
BDI	HF	.139	.098	−.100	−.006	.007	.080	.087	.238^*
Resting HR	Non-HF	1.00	.334^**	−.165	.243	.135	−.055	−.129	.093
Resting HR	HF		.460^**	−.129	.050	.184	.229	.190	.146
EX Peak HR	Non-HF		1.00	.441^**	.310^*	.350^*	.258	−.141	−.135
EX Peak HR	HF			.160	−.046	−.050	.417^**	.208	.045
Av. Watts EX	Non-HF			1.00	−.160	.074	.250	−.098	.010
Av. Watts EX	HF				−.168	.105	.029	−.001	−.061
Baseline NE	Non-HF				1.00	.258^*	−.442^**	−.265	.093
Baseline NE	HF					.286^*	−.293^*	−.222	.320^*
Baseline EPI	Non-HF					1.00	.041	−.357^*	−.125
Baseline EPI	HF						−.151	−.241	.151
Pre- to post-exercise NE	Non-HF						1.00	.457^**	−.259
Pre- to post-exercise NE	HF							.572^**	−.028
Pre- to post-exercise EPI	Non-HF							1.00	−.178
Pre- to post-exercise EPI	HF								−.047

Correlation table in heart failure patients and non-heart failure controls. BDI = Beck Depression Index, HF = heart failure, HR = heart rate, EX = exercise, NE = norepinephrine, EPI = epinephrine, CTX = chemotaxis.

Statistical significant correlations of p<.05,

^**

Significant correlations of p<.01.