Table 3. Heart rate (peak and mean) values (mean ± SD) during rounds 1, 2, and 3 of
combats 1 and 2 following caffeine or placebo ingestion.
Moment Peak (bpm) Mean (bpm)
Caffeine Placebo Caffeine Placebo
Combat 1
Round 1 205 ± 24 202 ± 32 169 ± 15 161 ± 21
Round 2 208 ± 25 204 ± 35 168± 10 147 ± 52
Round 3 200 ± 40 192 ± 25 168 ± 20 166 ± 18
Combat 2
Round 1 186 ± 33 197 ± 24 154 ±30 160 ± 18
Round 2 201 ± 23 203 ± 34 168 ± 20 168 ± 13
Round 3 208 ± 27 191 ± 33 170 ± 19 172 ± 24