Spearman correlation analysis between measures of adiposity and age and measures of heart rate variability
| Waist | Fat mass | Age | |
| Mean RR interval | 0.34+ | 0.46+ | |
| SDNN | 0.20¶ | ||
| Mean HR | −0.34+ | −0.47+ | |
| LF bands | −0.20# | ||
| HF bands | −0.24¶ | ||
| LF/HF band ratio | 0.21¶ | 0.17# |
Only significant Spearman correlation coefficients are shown. BMI: body mass index; WHR: waist-to-hip ratio; SDNN: standard deviation of RR intervals (normal sinus-to-normal sinus interbeat intervals); HR: heart rate; LF: low-frequency; HF: high-frequency. #: p≤0.05; ¶: p≤0.01; +: p≤0.001.