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Table 9 Differences in percent decline for average power (post-supplementation – pre-supplementation) during that fatigue test with identification of the individual subjects that exceeded the minimal important difference

From: The effects of phosphocreatine disodium salts plus blueberry extract supplementation on muscular strength, power, and endurance

Creatine Monohydrate Group

Average Power % Decline Change

Phosphocreatine Disodium Salts Plus Blueberry Extract Group

Average Power % Decline Change

Placebo Group

Average Power % Decline Change

1

0.07

1

11.37

1

6.64

2

5.16

2

9.15

2

10.17

3

0.17

3

−38.13a

3

11.39

4

6.49

4

14.25

4

−31.44a

5

−24.55a

5

18.79

5

−2.65

6

1.77

6

10.74

6

−13.68a

7

14.64

7

3.93

7

11.36

8

27.96

8

30.52

8

−12.37a

9

23.68

9

21.32

9

−0.97

10

6.81

10

5.80

10

24.92

11

8.16

11

15.70

  

12

−7.31

    

Proportion exceeding the minimal important difference

1 of 12 (8%)

 

1 of 11 (9%)

 

3 of 10 (30%)

  1. aIndicates a reduction in percent decline for average power that exceeded the minimal important difference (pooled pre-supplementation S.D. × 0.5 effect size = −10.51%)