From: Low doses of caffeine reduce heart rate during submaximal cycle ergometry
% of VO2max | 30 | 45 | 63 | Peak VO2 |
---|---|---|---|---|
VE (L·min-1) | ||||
PLA | 28.0 ± 2.3 | 41.5 ± 2.4 | 56.6 ± 3.4 | 129.0 ± 15.8 |
1.5 | 28.6 ± 3.0 | 42.7 ± 3.8 | 59.3 ± 5.3 | 129.1 ± 13.4 |
3.0 | 28.5 ± 2.4 | 42.0 ± 3.2 | 59.5 ± 6.0 | 127.1 ± 12.3 |
Bf (breaths·min-1) | ||||
PLA | 19.3 ± 2.8 | 21.3 ± 2.8 | 23.5 ± 4.1 | 41.0 ± 8.3 |
1.5 | 18.7 ± 3.1 | 20.8 ± 3.2 | 23.2 ± 4.4 | 38.8 ± 6.0 |
3.0 | 18.0 ± 2.6 | 20.0 ± 3.3* | 23.3 ± 4.1 | 38.9 ± 6.7 |
VT (L·breath-1) | ||||
PLA | 1.55 ± 0.23 | 2.02 ± 0.27 | 2.50 ± 0.41 | 3.21 ± 0.36 |
1.5 | 1.63 ± 0.27 | 2.13 ± 0.28 | 2.64 ± 0.36 | 3.38 ± 0.31 |
3.0 | 1.67 ± 0.19 | 2.22 ± 0.42 | 2.63 ± 0.41 | 3.32 ± 0.36 |
VO2(ml·kg-1·min-1) | ||||
PLA | 14.9 ± 1.6 | 22.6 ± 2.4 | 31.0 ± 3.3 | 49.7 ± 4.4 |
1.5 | 14.8 ± 0.9 | 22.7 ± 1.7 | 31.4 ± 2.7 | 50.7 ± 5.6 |
3.0 | 15.2 ± 1.0 | 23.0 ± 2.1 | 31.9 ± 3.2 | 50.3 ± 4.1 |
RER | ||||
PLA | 0.85 ± 0.04 | 0.90 ± 0.02 | 0.94 ± 0.03 | 1.21 ± 0.05 |
1.5 | 0.86 ± 0.05 | 0.92 ± 0.03 | 0.96 ± 0.04 | 1.18 ± 0.06 |
3.0 | 0.82 ± 0.06 | 0.88 ± 0.05*† | 0.93 ± 0.03† | 1.16 ± 0.06*† |
RPE | ||||
PLA | 8.4 ± 1.3 | 11.7 ± 1.5 | 13.8 ± 0.9 | 19.0 ± 0.6 |
1.5 | 8.2 ± 1.3 | 11.0 ± 0.7 | 13.4 ± 1.0 | 19.1 ± 0.6 |
3.0 | 7.9 ± 1.1 | 11.3 ± 1.2 | 13.4 ± 1.0 | 19.3 ± 0.6 |