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Table 2 Test-retest reliability of peak torque and average power from the placebo group (n = 10)

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

Visit 1 (Mean ± SD)

Visit 2 (Mean ± SD)

Grand Mean

p-Value

ICC

ICC 95% CI

SEM

CV (%)

Peak Torque (N·m)

 99.82 ± 36.51

107.52 ± 44.11

103.67

0.122

0.964

0.846–0.911

9.77

9.42

Average Power (Watts)

 141.94 ± 51.92

150.79 ± 64.30

146.37

0.279

0.953

0.824–0.988

17.18

11.74

  1. CV (%) coefficient of variation; ICC intraclass correlation coefficient; ICC 95% CI intraclass correlation coefficient 95% confidence interval; p-value type I error rate for the one-way repeated measures ANOVA with a 2,1 model to assess systematic error, SEM standard error of measurement