19 May 2026 : Clinical Research
Association of Novel Oral Appliance Use With Heart Rate Variability in Adolescent Athletes
Jui-Kun Chiang
ACDG 1, Yen-Chang Lin ABD 2, Hsueh-Hsin Kao D 3, Tzu-Ying Hung E 2, Weir-Chiang You DE 3,4*, Yee-Hsin Kao DEF 5
DOI: 10.12659/MSM.952561
Med Sci Monit 2026; 32:e952561
Table 3 P values from 2-way repeated-measures analysis of variance for test sequence and sex.
| Error: within | Test sequence | Sex | Test sequence × sex |
|---|---|---|---|
| RMSSD, milliseconds | 0.443 | 0.483 | 0.358 |
| p.NN50, % | 0.140 | 0.019 | 0.788 |
| SDSD, milliseconds | 0.440 | 0.481 | 0.359 |
| LF/HF ratio | 0.253 | 0.002 | 0.524 |
| LF power | 0.646 | 0.008 | 0.177 |
| HF power | 0.682 | 0.330 | 0.266 |
| HF – absolute power of the high-frequency band; LF – absolute power of the low-frequency band; p.NN50 – proportion of adjacent RR intervals differing by more than 50 milliseconds; RMSSD – root mean square of successive heartbeat interval differences; SDSD – standard deviation of differences between adjacent RR intervals. | |||