Table 2 Changes in rapid, tonic, and endurance contraction according to participants general characteristics in univariate analysis

Age

 ≤ 29

37.49 ± 17.70

0.420

26.38^c ± 13.27

 < 0.001

22.22^b ± 11.47

 < 0.001

30–39

37.82 ± 18.64

25.75^b ± 13.47

21.55^a ± 11.48

40–49

37.91 ± 18.27

23.81^a ± 12.68

20.53^a ± 11.77

BMI(kg/m2)

 < 18.5^a

32.61 ± 15.12

 < 0.001

22.80 ± 11.75

 < 0.001

19.26 ± 10.19

 < 0.001

18.5–23.9^b

36.67 ± 17.68

25.31 ± 12.83

21.23 ± 11.08

24–27.9^c

39.32 ± 18.60

27.06 ± 14.17

22.69 ± 11.96

 ≥ 28^d

42.26 ± 21.70

28.95 ± 14.50

24.66 ± 12.89

Parity

1

36.98^a ± 17.68

 < 0.001

25.92 ± 13.38

0.293

21.79 ± 11.52

0.445

2

38.83^b ± 19.05

26.12 ± 13.35

21.85 ± 11.41

3

39.02^b ± 19.48

25.90 ± 13.84

22.09 ± 11.80

 ≥ 4

33.63 ± 13.54

22.717 ± 9.67

19.32 ± 8.27

Education

 ≤ 12

36.89 ± 18.66

0.003

24.45 ± 12.93

 < 0.001

20.79 ± 11.08

 < 0.001

 > 12

37.85 ± 18.14

26.32 ± 13.45

22.04 ± 11.56

NW

 < 4

37.51 ± 18.09

 < 0.001

25.86 ± 13.34

 < 0.001

21.69 ± 11.44

 < 0.001

 ≥ 4

40.43 ± 20.36

28.04 ± 13.87

23.93 ± 12.04

NOF

1

37.57 ± 18.21

 < 0.001

25.90 ± 13.35

 < 0.001

21.74 ± 11.46

 < 0.001

 ≥ 2

42.74 ± 19.06

29.96 ± 14.22

25.47 ± 12.17

DM

CS^d

44.74 ± 18.88

 < 0.001

31.23 ± 14.01

 < 0.001

26.61 ± 12.09

 < 0.001

NIVD^c

34.49 ± 16.85

23.53 ± 12.11

19.55 ± 10.25

EP^b

32.58 ± 15.49

22.48 ± 11.61

18.58 ± 9.84

FD^a

24.29 ± 13.29

16.28 ± 10.44

13.50 ± 8.71