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Table 2 Ratings of perceived exertion 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
RPElegs Caffeine 15.63 ± 2.82 18.00 ± 1.15 0.548 (0.02) 0.021* (0.29) 0.889 (0.001)
  Placebo 15.88 ± 3.68 18.40 ± 0.97
RPEcardio Caffeine 14.50 ± 3.62 17.20 ± 1.75 0.419 (0.04) 0.019* (0.30) 0.785 (0.05)
  Placebo 14.75 ± 2.76 17.70 ± 1.57
RPEgeneral Caffeine 15.50 ± 3.66 17.70 ± 1.16 0.094 (0.16) 0.079 (0.18) 0.846 (0.002)
  Placebo 16.13 ± 3.48 18.20 ± 0.92
  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; RPElegs: exertion perceived at the level of the legs; RPEcardio: exertion perceived at the cardiorespiratory level; RPEgeneral: general perceived exertion
  3. *: p < 0.05