From: The influence of a CYP1A2 polymorphism on the ergogenic effects of caffeine
RPE | Genotype | Caffeine | Placebo |
---|---|---|---|
AA | 14.3 ± 1.6 | 14.2 ± 1.6 | |
C | 15.0 ± 1.4 | 14.9 ± 1.4 | |
VO2 (L·min-1)ab | |||
AA | 3.08 ± 0.41 | 2.88 ± 0.49 | |
C | 3.43 ± 0.48 | 3.23 ± 0.48 | |
RER | |||
AA | 0.92 ± 0.05 | 0.91 ± 0.04 | |
C | 0.94 ± 0.05 | 0.94 ± 0.04 | |
HR (beats per min)a | |||
AA | 162 ± 10 | 153 ± 11 | |
C | 170 ± 13 | 163 ± 14 |