Table 5.
Paced Respiration | Music Control | Between-Group Difference | ||||
---|---|---|---|---|---|---|
Mean (95% CI)a | P-Value | Mean (95% CI)a | P-Value | Mean (95% CI)a | P-Value | |
Pre-Ejection Period (PEP)b, msec | 0.34 (−20.2, 20.9) | .97 | −3.4 (−21.9, 15.1) | .72 | 3.8 (−7.1, 14.6) | .49 |
Respiratory Sinus Arrhythmia (RSA)b, msec2 | −0.27 (−1.1, 0.6) | .52 | −0.4 (−1.1, 0.3) | .27 | 0.14 (−0.3, 0.6) | .56 |
Least square mean estimates of change and 95% confidence intervals were derived from ANCOVA models, adjusted for baseline values, diabetes, and selected medications (beta blockers, beta agonists, alpha blockers, and sympathomimetics).
Lower resting PEP corresponds to increased peripheral sympathetic nervous system activity. Higher RSA corresponds to greater peripheral parasympathetic activity.