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Table 7 Absolute change (post-supplementation – pre-supplementation) values for average power 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 Change (Watts) Phosphocreatine Disodium Salts Plus Blueberry Extract Group Average Power Change (Watts) Placebo Group Average Power Change (Watts)
Subject 1 20.17a 1 32.42a 1 40.02a
2 37.18a 2 14.97 2 37.06a
3 8.24 3 −9.32 3 22.53a
4 26.33a 4 7.44 4 −33.27
5 −27.68 5 53.58a 5 2.64
6 −0.16 6 29.08a 6 14.75
7 23.83a 7 10.43 7 −23.47
8 35.17a 8 40.69a 8 5.59
9 39.52a 9 45.09a 9 −3.55
10 −15.18 10 49.01a 10 26.23a
11 27.15a 11 55.94a   
12 21.76a     
Proportion exceeding the minimal important difference 8 of 12 (67%)   7 of 11 (64%)   4 of 10 (40%)
  1. aIndicates an increase in average power across the 28 days of supplementation that exceeded the minimal important difference (pooled pre-supplementation S.D. × 0.5 effect size = 19.21 W)