Table 3 Results of trend tests between heart rate variability items and exercise frequency per week according to age category
| Â | Â | SDNN | rMSSD | LF | HF | LF:HF | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Age (year) | Exercise (times / week) | low | normal | low | normal | low | normal | low | normal | low | normal | ||||||||||
n | % | n | % | n | % | n | % | n | % | n | % | n | % | n | % | n | % | n | % | ||
< 45 | ≥3 | 5 | 18.5 | 22 | 81.5 | 0 | 0.0 | 27 | 100.0 | 7 | 25.9 | 20 | 74.1 | 1 | 3.7 | 26 | 96.3 | 11 | 40.7 | 16 | 59.3 |
|  | 1–2 | 10 | 18.9 | 43 | 81.1 | 3 | 5.7 | 50 | 94.3 | 12 | 22.6 | 41 | 77.4 | 5 | 9.4 | 48 | 90.6 | 17 | 32.1 | 36 | 67.9 |
| Â | 0 | 6 | 28.6 | 15 | 71.4 | 4 | 19.1 | 17 | 81.0 | 8 | 38.1 | 13 | 61.9 | 4 | 19.1 | 17 | 81.0 | 5 | 23.8 | 16 | 76.2 |
| Â | p-value | 0.2112 | 0.0059 | 0.197 | 0.0406 | 0.1061 | |||||||||||||||
≥45 | ≥3 | 4 | 40.0 | 6 | 60.0 | 2 | 20.0 | 8 | 80.0 | 5 | 50.0 | 5 | 50.0 | 3 | 30.0 | 7 | 70.0 | 5 | 50.0 | 5 | 50.0 |
|  | 1–2 | 4 | 57.1 | 3 | 42.9 | 1 | 14.3 | 6 | 85.7 | 4 | 57.1 | 3 | 42.9 | 1 | 14.3 | 6 | 85.7 | 4 | 57.1 | 3 | 42.9 |
| Â | 0 | 0 | 0.0 | 1 | 100.0 | 0 | 0.0 | 1 | 100.0 | 0 | 0.0 | 1 | 100.0 | 0 | 0.0 | 1 | 100.0 | 1 | 100.0 | 0 | 0.0 |
| Â | p-value | 0.5000 | 0.2994 | 0.3474 | 0.1727 | 0.2150 | |||||||||||||||