From: Does voluntary hypoventilation during exercise impact EMG activity?
Variables | Conditions | 1 min | 2 min | 3 min | 4 min | 5 min |
---|---|---|---|---|---|---|
\({\dot{\text{V}}}\)E (L/min) | NB | 50.34 ± 3.60 | 61.60 ± 4.63 | 69.52 ± 5.30 | 69.52 ± 5.30 | 68.46 ± 3.97 |
VH | 36.14 ± 4.78* | 45.27 ± 2.03* | 50.58 ± 4.87* | 52.52 ± 4.77* | 53.60 ± 5.11* | |
\({\dot{\text{V}}}\)O2 (L/min) | NB | 1.93 ± 0.12 | 2.22 ± 0.11 | 2.38 ± 0.07 | 2.41 ± 0.06 | 2.46 ± 0.05 |
VH | 1.66 ± 0.14 | 2.03 ± 0.14 | 2.20 ± 0.14 | 2.23 ± 0.23 | 2.34 ± 0.15 | |
\({\dot{\text{V}}}\)CO2 (L/min) | NB | 1.55 ± 0.10 | 1.88 ± 0.13 | 2.05 ± 0.14 | 2.12 ± 0.15 | 2.08 ± 0.10 |
VH | 1.24 ± 0.11* | 1.69 ± 0.09* | 1.83 ± 0.20 | 1.90 ± 0.20 | 2.00 ± 0.14 | |
RER | NB | 0.81 ± 0.04 | 0.85 ± 0.04 | 0.86 ± 0.05 | 0.88 ± 0.07 | 0.85 ± 0.04 |
VH | 0.75 ± 0.02 | 0.80 ± 0.03 | 0.83 ± 0.04 | 0.85 ± 0.03 | 0.85 ± 0.02 | |
HR (beats/min) | NB | 127 ± 7 | 136 ± 6 | 142 ± 8 | 145 ± 7 | 147 ± 9 |
VH | 128 ± 6 | 136 ± 7 | 142 ± 7 | 147 ± 7 | 150 ± 7 | |
SaO2 (%) | NB | 98.4 ± 0.7 | 98.0 ± 0.9 | 97.5 ± 0.7 | 97.5 ± 0.5 | 97.4 ± 0.7 |
VH | 97.2 ± 1.5* | 93.2 ± 3.4* | 92.3 ± 2.5* | 91.2 ± 2.1* | 89.6 ± 3.2* |