From: Fetal cardiotocography before and after water aerobics during pregnancy
GA (weeks) | Basal FHR (mean ± SD) |  |  | ||
---|---|---|---|---|---|
 | CTG before | CTG after | Variation | n | p |
24 - 27 | 143.8 (± 7.7) | 142.5 (± 7.7) | -1.38 (± 6.1) | 61 | 0.0821 |
28 - 31 | 139.5 (± 7.7) | 140.2 (± 8.1) | 0.65 (± 7.2) | 60 | 0.4881 |
32 - 35 | 139.1 (± 9.6) | 139.2 (± 9.3) | 0.02 (± 9.0) | 64 | 0.9891 |
36 - 40 | 137.3 (± 8.9) | 138.8 (± 11.2) | 1.41 (±10.0) | 58 | 0.2851 |
 | FM (mean ± SD) |  |  | ||
24 - 27 | 16.2 (± 12.4) | 19.1 (± 18.7) | 2.9 (± 13.9) | 61 | 0.2402 |
28 - 31 | 20.0 (± 15.6) | 21.4 (± 18.5) | 1.4 (± 20.2) | 60 | 0.3342 |
32 - 35 | 22.9 (± 22.9) | 21.8 (± 22.2) | -1.0 (± 23.3) | 64 | 0.4782 |
36 - 40 | 21.4 (± 17.3) | 23.6 (± 21.0) | 2.2 (± 22.7) | 58 | 0.6362 |
 | A (mean ± SD) |  |  | ||
24 - 27 | 3.1 (± 2.6) | 3.7 (± 3.0) | 0.6 (± 2.4) | 61 | 0.1172 |
28 - 31 | 4.6 (± 4.1) | 4.9 (± 4.8) | 0.4 (± 4.9) | 60 | 0.9832 |
32 - 35 | 6.0 (± 5.4) | 6.4 (± 4.6) | 0.3 (± 5.6) | 64 | 0.6582 |
36 - 40 | 7.7 (± 5.8) | 8.3 (± 5.8) | 0.6 (± 5.5) | 58 | 0.4022 |
 | Variability of FHR (bpm ± SD) |  |  | ||
24 - 27 | 8.5 (± 3.4) | 10.1 (± 5.5) | 1.6 (± 4.5) | 61 | 0.011 2 |
28 - 31 | 10.0 (± 5.0) | 9.7 (± 4.6) | -0.3 (± 3.4) | 60 | 0.9302 |
32 - 35 | 10.0 (± 5.0) | 9.8 (± 5.3) | -0.2 (± 4.8) | 64 | 0.7012 |
36 - 40 | 9.9 (± 4.7) | 10.2 (± 4.8) | 0.3 (± 4.8) | 58 | 0.4582 |