Table 3 ECG and locomotor activity of the fetus in "active" hours (9 a.m. to 2 p.m.) (36 – 40 weeks gestation)
From: Development of daily rhythmicity in heart rate and locomotor activity in the human fetus
Time (h) | Type | Duration | Time (h) | Duration | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Oscillation type | Fetal movements | Recording | Â | Oscillation type | Fetal movements | Recording | ||||
| Â | Â | Min | Sec | Min | Sec | Min | Â | Min | Sec | Min | Sec | Min |
9–10 | I | - | 45 ± 0.2 | 7 ± 0.2 | - | 48 ± 0.2 | 12–13 | - | 10 ± 0.2 | 8 ± 0.1 | - | 30 ± 0.3 |
|  | II | 6 ± 0.2 | - | - | - |  |  | 10 ± 0.1 | - | - | 50 ± 0.1 |  |
|  | III | 7 ± 0.3 | - | - | - |  |  | 2 ± 0.1 | - | - | - |  |
|  | IV | 35 ± 0.1 | - | - | - |  |  | 17 ± 0 | - | - | - |  |
10–11 | I | - | 50 ± 0.4 | 3 ± 0.1 | - | 24 ± 0.3 | 13–14 | 2 ± 0.3 | - | 4 ± 0.3 | - | 48 ± 0.1 |
|  | II | 8 ± 0.1 | - | - | - |  |  | 8 ± 0.1 | - | - | - |  |
|  | III | 3 ± 0.1 | - | - | - |  |  | 8 ± 0.2 | - | - | - |  |
|  | IV | 12 ± 0.01 | 50 ± 0.1 | - | - |  |  | 30 ± 0.1 | - | - | - |  |
11–12 | I | - | 30 ± 0.2 | 4 | 50 ± 0.1 | 38 ± 0.2 | Total from 9–14 | 6–42 ± 0.16 | 45 ± 0.26 | 26 | 50 ± 0.16 | 188 ± 0.22 |
|  | II | 10 ± 0.3 | - | - | - |  |  | 25 ± 0.24 |  |  |  |  |
|  | III | 5 ± 0.3 | - | - | - |  |  | 116 |  |  |  |  |
|  | IV | 22 ± 0.2 |  | - | - |  |  |  | 50 ± 0.12 |  |  |  |