However, the mean of the entire combat 2 for referee time-outs (17.98 ± 5.55 vs. 11.38 ± 5.05 s, respectively, P = 0.049) and attack numbers (12.20 ± 6.71 vs. 8.88 ± 3.21 times, respectively, P = 0.035) were higher following caffeine ingestion compared with placebo.