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BioMed Research International

BioMed Research International / 2015 / Article / Tab 4

Research Article

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 modelsβ ± SE value adjusted
HR   
 Constant47.3 ± 4.172<0.0018.4%
 Visceral fat area (cm²)0.0459 ± 0.01109<0.001
 Systolic blood pressure (mmHg)0.101 ± 0.031950.002
   
 Constant2.018 ± 0.067<0.00110.3%
 Age (years)−0.010 ± 0.001<0.001
 Visceral fat area (cm²)−0.0008 ± 0.00020.002
   
 Constant3.098 ± 0.242<0.0018.0%
 Age (years)−0.018 ± 0.003<0.001
 Waist circumference (cm)−0.005 ± 0.0020.016
   
 Constant2.85 ± 0.193<0.0014.5%
 Age (years)−0.009 ± 0.0020.001
 Waist circumference (cm)−0.005 ± 0.0020.006
   
 Constant−0.652 ± 0.181<0.0014.3%
 Age (years)0.008 ± 0.0020.001
 Systolic blood pressure (mmHg)0.003 ± 0.0010.004
: 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 .