Table 2. Blood lactate and ratings of perceived exertion (RPE) values (mean ± SD) for
rounds 1, 2, and 3 of combats 1 and 2 following caffeine or placebo ingestion.
Moment Lactate (mmol·L−1
) RPE (units)
Caffeine Placebo Caffeine Placebo
Pre-combat 1 1.3 ± 0.5 1.5 ± 1.2 7.3 ± 1.1 8.4 ± 1.4
Round 1 5.7 ± 2.4 4.8 ± 1.3 #
10.9 ± 1.6 11.1 ± 2.6
Round 2 10.4 ± 5.2 #,* 7.9 ± 2.5 #
12.6 ± 2.6 #
12.6 ± 2.8 #
Round 3 12.6 ± 6.2 #,* 9.3 ± 2.8 #,§ 13.3 ± 3.4 #
12.8 ± 3.2 #
Pre-combat 2 3.2 ± 1.9 2.3 ± 0.7 8.0 ± 1.6 8.9 ± 1.4
Round 1 5.8 ± 2.8 5.1 ± 2.0 11.1 ± 2.8 10.6 ± 2.1
Round 2 7.6 ± 3.6 6.4 ± 2.8 #
11.0 ± 4.4 11.6 ± 2.0
Round 3 10.0 ± 5.3 #
8.0 ±3.0 #
14.5 ± 3.1 #
12.5 ± 3.0
* Significantly different from placebo. #
Significantly different from pre-combat within the same condition.
§
Significantly different from round 1 within the same condition and same combat.