Heart Rate Variability in Shift Workers: Responses to Orthostatism and Relationships with Anthropometry, Body Composition, and Blood Pressure
Spearman correlation coefficients (Rho) between heart rate variability measures (supine position) and age, anthropometric, body composition, and clinical variables.
Body mass index (kg/m²)
Waist circumference (cm)
Neck circumference (cm)
Total body fat (%)
Total body fat (kg)
Visceral fat area (cm²)
Systolic blood pressure (mmHg)
Diastolic blood pressure (mmHg)
, 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; represents .