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Table 3 Serum 25(OH)D levels and biochemical markers of muscle damaged of the subjects

From: The effect of vitamin D supplementation on serum total 25(OH) levels and biochemical markers of skeletal muscles in runners

Variables

Group

Pre-Intervention

Post-Intervention

Effect size

p-value

Mean difference (%)

CI −95%

CI + 95%

25(OH)rest [ng/ml]

EXP

34.9 ± 4.7

40.3 ± 4.9*

0.69 / Moderate

0.02

−3.9 (− 10.7%)

−7.03

− 0.72

CON

33.9 ± 4.8

31.8 ± 4.2

0.46 / Small

0.13

2.1 (6.2%)

−0.68

4.88

25(OH)max [ng/ml]

EXP

36.5 ± 3.3

44.9 ± 4.9

1.64 / Large

< 0.001

−7.7 (−20.9%)

− 11.14

−4.30

CON

34.7 ± 8.1

39.2 ± 7.6

0.57 / Small

0.13

−4.5 (−13.0%)

−10.57

1.55

25(OH)D1 h [ng/ml]

EXP

40.0 ± 8.8**

45.5 ± 4.7*

0.52 / Small

0.22

−3.9 (−9.4%)

− 10.44

2.70

CON

33.3 ± 3.4

38.5 ± 9.7

0.71 / Moderate

0.04

−5.2 (−15.6%)

−10.11

−0.29

25(OH)D24h [ng/ml]

EXP

36.2 ± 6.2*

41.2 ± 5.0*

0.76 / Moderate

0.04

−4.6 (−12.5%)

−9.00

−0.14

CON

30.0 ± 6.4

35.7 ± 6.9

0.87 / Moderate

0.02

−5.8 (− 19.4%)

−10.63

−0.99

TN rest [ng/ml]

EXP

2.9 ± 1.9**

2.0 ± 1.6*

0.77 / Moderate

0.12

1.7 (45.3%)

−0.51

3.82

CON

7.2 ± 2.0

5.6 ± 4.2

0.61 / Moderate

0.20

3.0 (35.2%)

−1.82

7.85

TN max [ng/ml]

EXP

5.1 ± 1.7***

2.7 ± 1.6***

1.44 / Large

0.004

2.4 (47.4%)

0.94

3.94

CON

8.9 ± 6.3

5.3 ± 4.1

1.38 / Large

0.02

7.6 (59.3%)

1.73

13.56

TN 1 h [ng/ml]

EXP

4.9 ± 2.0

2.9 ± 2.0

0.98 / Moderate

0.03

2.0 (40.8%)

0.18

3.84

CON

4.4 ± 3.2

4.7 ± 2.4

0.09 / Trivial

0.82

−0.3 (− 5.8%)

−2.63

2.12

TN 24 h [ng/ml]

EXP

6.3 ± 3.7

3.7 ± 1.2

0.82 / Moderate

0.08

2.6 (40.7%)

−0.33

5.47

CON

4.7 ± 1.2

3.1 ± 1.2

0.47 / Small

0.28

1.6 (33.5%)

−1.49

4.65

MB rest [ng/ml]

EXP

44.7 ± 23.1

40.6 ± 17.6

0.19 / Trivial

0.71

4.1 (9.2%)

−19.36

27.58

CON

44.4 ± 11.8

37.1 ± 21.8

0.39 / Small

0.43

7.2 (16.3%)

−12.11

26.54

MB max [ng/ml]

EXP

73.9 ± 32.0

58.7 ± 27.6

0.49 / Small

0.16

15.2 (20.6%)

−7.12

37.52

CON

93.4 ± 33.1

73.5 ± 43.7

0.49 / Small

0.29

19.9 (21.3%)

−19.84

59.67

MB 1 h [ng/ml]

EXP

173.6 ± 104.5

92.6 ± 48.9

0.96 / Moderate

0.01

81.5 (47.0%)

24.69

138.35

CON

102.6 ± 59.5

83.9 ± 50.0

0.32 / Small

0.47

18.6 (18.2%)

−36.60

73.82

MB 24 h [ng/ml]

EXP

93.2 ± 56.2

59.5 ± 37.8

0.67 / Moderate

0.15

33.7 (36.2%)

−14.17

81.60

CON

98.3 ± 26.7

93.0 ± 50.7

0.13 / Trivial

0.72

5.3 (5.4%)

−26.31

37.01

CK rest [U/l]

EXP

151.0 ± 59.5*

166.4 ± 100.0

0.19 / Trivial

0.58

−15.4 (− 10.2%)

−75.57

44.72

CON

234.2 ± 88.9

248.4 ± 179.0

0.1 / Trivial

0.81

−14.1 (−6.0%)

− 143.10

114.84

CK max [U/l]

EXP

226.1 ± 141.0

212.7 ± 112.0

0.1 / Trivial

0.78

13.4 (5.9%)

−87.82

114.67

CON

276.2 ± 118.2

286.6 ± 191.5

0.06 / Trivial

0.87

−10.4 (−3.8%)

− 152.70

131.84

CK 1 h [U/l]

EXP

248.0 ± 161.8

214.3 ± 109.0

0.23 / Small

0.46

33.7 (13.6%)

−63.22

130.62

CON

276.8 ± 122.3

213.2 ± 113.4

0.52 / Small

0.16

63.5 (22.9%)

−29.34

156.39

CK 24 h [U/l]

EXP

361.3 ± 238.9

243.3 ± 91.5*

0.55 / Small

0.20

97.7 (28.1%)

−59.56

255.03

CON

434.3 ± 143.9

332.0 ± 155.6

1.17 / Moderate

0.05

143.1 (32.9%)

64.74

221.49

LDH rest [U/l]

EXP

337.1 ± 73.5

333.1 ± 80.5

0.05 / Trivial

0.82

4.0 (1.2%)

−34.60

42.60

CON

339.4 ± 47.8

333.1 ± 60.1

0.11 / Trivial

0.69

6.2 (1.8%)

−27.30

39.74

LDH max [U/l]

EXP

400.5 ± 108.0

395.9 ± 68.6

0.18 / Trivial

0.54

17.5 (4.4%)

−44.25

79.36

CON

401.4 ± 63.8

413.5 ± 79.6

0.16 / Trivial

0.33

−12.1 (−3.0%)

−38.25

14.04

LDH 1 h [U/l]

EXP

361.4 ± 87.8

354.2 ± 69.4

0.21 / Small

0.37

18.3 (5.1%)

−25.25

61.88

CON

355.0 ± 44.9

368.6 ± 72.2

0.22 / Small

0.35

−13.6 (−3.8%)

−43.99

16.86

LDH 24 h [U/l]

EXP

344.9 ± 75.5

313.5 ± 66.6

0.02 / Trivial

0.94

−1.8 (−0.5%)

−51.33

47.68

CON

339.1 ± 56.8

321.1 ± 31.1

0.07 / Trivial

0.74

4.1 (1.2%)

−21.87

29.99

TNFα rest [pg/ml]

EXP

9.7 ± 5.7

5.6 ± 2.6

0.88 / Moderate

0.09

4.1 (42.2%)

−0.75

8.93

CON

13.7 ± 7.4

12.5 ± 4.4

0.19 / Trivial

0.65

1.2 (8.9%)

−4.52

6.96

TNFα max [pg/ml]

EXP

23.9 ± 15.2

10.5 ± 4.6

1.14 / Moderate

0.01

13.4 (56.2%)

3.48

23.40

CON

22.9 ± 13.7

22.7 ± 17.4

0.01 / Trivial

0.97

0.2 (0.8%)

−12.6

12.98

TNF α 1 h [pg/ml]

EXP

21.9 ± 16.8

8.4 ± 3.7

1.06 / Moderate

0.03

13.5 (61.7%)

1.74

25.26

CON

18.7 ± 11.4

21.3 ± 12.2

0.21 / Small

0.65

−2.6 (−13.9%)

−14.91

9.69

TNF α 24 h [pg/ml]

EXP

19.8 ± 14.2

11.6 ± 5.7

0.73 / Moderate

0.02

8.2 (41.6%)

1.55

14.94

CON

13.9 ± 6.7

13.7 ± 7.3

0.02 / Trivial

0.95

0.1 (1.1%)

−5.56

5.87

IL-6 rest [pg/ml]

EXP

1.4 ± 1.3

1.9 ± 1.8

0.25 / Small

0.23

−0.3 (−18.7%)

−0.74

0.20

CON

1.5 ± 1.3

2.1 ± 1.6

0.49 / Small

0.10

−0.6 (−44.1%)

−1.42

0.15

IL-6 max [pg/ml]

EXP

2.0 ± 1.9

1.7 ± 1.0

0.29 / Small

0.39

0.33 (16.1%)

−0.49

1.15

CON

2.7 ± 1.5

2.5 ± 2.3

0.01 / Trivial

0.98

−0.01 (− 0.4%)

−1.18

1.16

IL-6 1 h [pg/ml]

EXP

2.7 ± 2.3

2.3 ± 1.3

0.22 / Small

0.59

0.39 (14.4%)

−1.14

1.92

CON

3.1 ± 2.0

3.0 ± 2.0

0.02 / Trivial

0.95

−0.04 (−1.5%)

−1.40

1.32

IL-6 24 h [pg/ml]

EXP

1.8 ± 1.2

1.0 ± 0.9**

0.72 / Moderate

0.11

0.79 (43.5%)

−0.20

1.77

CON

2.0 ± 1.2

2.4 ± 1.6

0.26 / Small

0.46

−0.3 (−14.9%)

−1.17

0.57

  1. * p < 0.05; ** p < 0.01; *** p < 0.001 significant differences between vitamin D supplemented group (EXP) and placebo control group (CON)