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Table 2 Cardiotocography (CTG) recorded variation in basal fetal heart rate (FHR), in the number of fetal movements (FM), in the number of accelerations (A) and in variability of FHR before and after moderate physical exercise in water, according to gestational age (GA).

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

  1. 1 Student's t-test for related samples
  2. 2 Wilcoxon's non-parametric test for related samples
  3. Values ares expressed as means ± Standard Deviation (SD).