Table 1 Descriptive statistics of the participants16 are presented as the mean, standard deviation (SD), range (Min, Max), and interquartile range (IQR).

From: Maternal physical activity affects yolk sac size and growth in early pregnancy, but girls and boys use different strategies

n = 190

Frequency

Missing

Mean

SD

Min

Max

IQR

Age (years)

 

0

29.0

3.1

20.0

35.0

27–31

Height (cm)

 

0

167.7

6.2

149.0

185.0

164–172

Weight (kg)

 

0

64.7

8.3

47.1

89.8

58.9–71.2

BMI

 

0

23.0

2.6

17.8

29.9

21–24.8

Lean body mass (kg)

 

0

45.7

3.8

36.0

55.6

43.0–48

Body fat (%)

 

0

28.8

5.5

15.9

41.9

25–32.9

Cycle length (days)

 

0

28.5

1.7

24

35

28–29

Parity

 

0

     

 0

89 (46.8%)

      

 1

79 (41.6%)

      

 ≥ 2

22 (11.6%)

      

Training efforts*

 

0

     

 None

3 (1.6%)

      

 Effortless walking

46 (24.2%)

      

 < 3 times week−1

90 (47.4%)

      

 ≥ 3 times week−1

51 (26.8%)

      
  1. *Training efforts established based on a unvalidated questionnaire completed at study entry by each participant.