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Table 1 Performance variables recorded in each experimental group

From: Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes

 

Elite

Recreational

p-values (ES)

Supplementation

Group

Supplementation x Group

Wmax

Caffeine

10.85 ± 0.48

11.52 ± 0.62

0.003** (0.44)

0.009** (0.36)

0.431 (0.04)

 

Placebo

10.19 ± 0.59

11.11 ± 0.8

Wavg

Caffeine

8.69 ± 0.38

8.8 ± 0.67

0.001**(0.53)

0.378 (0.07)

0.290 (0.05)

 

Placebo

8.25 ± 0.37

8.54 ± 0.51

Wmin

Caffeine

6.49 ± 0.22

6.01 ± 1.1

0.452 (0.04)

0.345 (0.06)

0.422 (0.04)

 

Placebo

6.19 ± 0.56

6.02 ± 0.89

   

T Wmax

Caffeine

8.00 ± 1.6

7.2 ± 1.55

<0.001*** (0.57)

0.783 (0.05)

0.077 (0.18)

 

Placebo

8.88 ± 1.64

9.3 ± 1.49

   
  1. Data are provided as the mean ± standard deviation. Adjusted values for the test statistic (F) and degrees of freedom (df) are shown when inequality of variances were found between groups
  2. Abbreviations: ES: effect size; Wmax: maximum power; Wavg: average power; Wmin: minimum power; T Wmax: time to maximum power
  3. **: p < 0.01; ***: p < 0.001