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Table 2 Differences in the 7 considered variables between the group that ingested caffeine (GCAF) and the placebo group (GCON)

From: The acute effects of caffeine intake on time under tension and power generated during the bench press movement

Variables D F P
Maximal concentric power [W] 0.245 3.52 0.068
Maximal concentric velocity [m/s] 0.231 3.48 0.070
Mean concentric power [W] 0.210 3.04 0.089
Mean concentric velocity [m/s] 0.221 3.60 0.065
Number of repetitions [n] 0.132 2.15 0.151
Time under tension [s] 0.903 11.49 0.002
Mean eccentric velocity [m/s] 0.912 11.64 0.002
  1. Notes: d - effect size; p - statistical significance; F – value of analysis of variance function