Table 1.
Multiple regression analyses of the relationship between measures of autonomic nervous system activity and arterial stiffness in 47 subjects.
| Pulse Wave Velocity * | Augmentation Index | |||
|---|---|---|---|---|
| β Coefficient | p Value | β Coefficient | p Value | |
| Heart rate variability | ||||
| Baroreflex sensitivity * | −0.30 | 0.04 | +0.01 | 0.93 |
| Low Frequency (LF) band * | −0.26 | 0.06 | +0.10 | 0.44 |
| High Frequency (HF) band * | −0.33 | 0.02 | +0.10 | 0.47 |
| LF:HF * | +0.04 | 0.14 | +0.05 | 0.72 |
| Plasma catecholamine metabolites | ||||
| Normetanephrine *,# | +0.09 | 0.97 | +0.10 | 0.48 |
| Metanephrine # | +0.00 | 0.46 | +0.34 | 0.02 |
* Variable log-transformed before multiple regression analysis; # 43 subjects included in analysis; p values are independent of age, sex, smoking status and serum cholesterol.