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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%)