Heart Rate Variability in Shift Workers: Responses to Orthostatism and Relationships with Anthropometry, Body Composition, and Blood Pressure
Table 4
Equations using regression analysis for cardiac variables.
Regression models
β ± SE
value
adjusted
HR
Constant
47.3 ± 4.172
<0.001
8.4%
Visceral fat area (cm²)
0.0459 ± 0.01109
<0.001
Systolic blood pressure (mmHg)
0.101 ± 0.03195
0.002
Constant
2.018 ± 0.067
<0.001
10.3%
Age (years)
−0.010 ± 0.001
<0.001
Visceral fat area (cm²)
−0.0008 ± 0.0002
0.002
Constant
3.098 ± 0.242
<0.001
8.0%
Age (years)
−0.018 ± 0.003
<0.001
Waist circumference (cm)
−0.005 ± 0.002
0.016
Constant
2.85 ± 0.193
<0.001
4.5%
Age (years)
−0.009 ± 0.002
0.001
Waist circumference (cm)
−0.005 ± 0.002
0.006
Constant
−0.652 ± 0.181
<0.001
4.3%
Age (years)
0.008 ± 0.002
0.001
Systolic blood pressure (mmHg)
0.003 ± 0.001
0.004
: natural logarithm of power in the high frequency range; , natural logarithm of the heart rate; : natural logarithm of power in the low frequency range; : natural logarithm of the ratio LF (ms²)/HF (ms²); : natural logarithm of the root mean square of successive RR interval differences. Numbers in bold represent .
