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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: Biol Psychol. 2008 Dec 3;80(3):325–332. doi: 10.1016/j.biopsycho.2008.11.005

Table 2.

Correlation between chronic stress and heart rate and various measures of heart rate variability. Partial correlation coefficients (n = 50) between chronic hassles frequency and baseline HR indices adjusted for baseline respiration rate.

Chronic hassles frequency
HR (beats/min) r = .06
HR variability (SDRR) r = .14
RSA (beats/s2) r = .11
LF (ms2/Hz) r = .10
HF (ms2/Hz) r = −.10
LF/HF r = .17
D2 r = −.35*

Abbreviations: BL, baseline; HR, heart rate; SDRR, standard deviation of the mean R-R interval; RSA, respiratory sinus arrhythmia; LF, low frequency band power; HF, high frequency band power; D2, correlation dimension.

*

p < .05 (two-tailed).