Table 2. Correlations between K-ARS Variables and HRV Parameters in All Participants (n=86).
| HRV parameters | K-ARS variables | ||
|---|---|---|---|
| Inattention | Hyperactivity | Total scores | |
| Mean heart rate | -0.277* | -0.204 | -0.259* |
| SDNN | 0.116 | 0.014 | 0.068 |
| RMSSD | 0.198 | 0.077 | 0.146 |
| TP | 0.081 | 0.022 | 0.055 |
| VLF | 0.023 | 0.047 | -0.038 |
| LF | 0.002 | -0.065 | -0.035 |
| HF | 0.229* | 0.086 | 0.167 |
| LF/HF | -0.250* | -0.124 | -0.200 |
K-ARS, Korean-ADHD rating scale; HRV, heart rate variability; SDNN, standard deviation of the NN interval; RMSSD, square root of mean squared differences of successive NN intervals; TP, total power; VLF, very low frequency; LF, low frequency; HF, high frequency; LF/HF, ratio of low frequency to high frequency; ADHD, attention deficit hyperactivity disorder.
Numbers are presented as means.
*p≤0.05.