Table 1 Ventilatory, pulmonary gas exchange, and circulatory measurements at baseline and during constant and sinusoidal work rate (WR) exercise periods
From: Effect of sinusoidal leg cycling exercise period on brachial artery blood flow dynamics in humans
Period | Baseline | Constant WR exercise | Sinusoidal WR exercise | ||
|---|---|---|---|---|---|
4–6 min | 28–30 min | Middle 2-min* | Last 2-min* | ||
VE, L/min | |||||
 2-min | 9.8 ± 1.9 | 25.4 ± 3.7a | 27.0 ± 3.9a | 26.9 ± 5.2 | 27.2 ± 3.6 |
 4-min | 9.6 ± 1.7 | 25.0 ± 3.2a | 27.3 ± 3.4a,b | 27.8 ± 2.8 | 27.7 ± 2.9 |
 6-min | 9.5 ± 1.5 | 25.8 ± 4.0a | 26.4 ± 4.1a | 27.0 ± 3.5 | 27.4 ± 3.1 |
VO2, mL/min | |||||
 2-min | 223 ± 18 | 913 ± 62a | 933 ± 87a | 940 ± 82 | 935 ± 78 |
 4-min | 221 ± 29 | 942 ± 70a | 968 ± 79a | 967 ± 71 | 949 ± 62 |
 6-min | 189 ± 34 | 928 ± 78a | 940 ± 101a | 948 ± 96 | 938 ± 99 |
VCO2, mL/min | |||||
 2-min | 199 ± 30 | 793 ± 71a | 842 ± 90a,b | 877 ± 74 | 866 ± 80 |
 4-min | 192 ± 22 | 811 ± 65a | 892 ± 78a,b | 886 ± 70 | 880 ± 71 |
 6-min | 202 ± 38 | 809 ± 77a | 869 ± 88a,b | 867 ± 92 | 871 ± 101 |
HR, bpm | |||||
 2-min | 71.9 ± 9.8 | 105.3 ± 10.2a | 110.2 ± 11.7a,b | 114.9 ± 10.8c | 116.2 ± 11.3d |
 4-min | 70.3 ± 12.7 | 106.8 ± 11.0a | 109.0 ± 11.3a | 113.2 ± 12.3 | 115.0 ± 13.8d |
 6-min | 73.1 ± 10.5 | 106.0 ± 9.9a | 110.8 ± 12.5a | 114.0 ± 13.1c | 117.0 ± 12.5d |
BF-BA, mL/min | |||||
 2-min | 78.5 ± 28.2 | 50.7 ± 24.8a | 102.7 ± 29.8a,b | 105.5 ± 29.4 | 102.3 ± 29.6 |
 4-min | 77.9 ± 33.4 | 52.2 ± 26.3a | 98.9 ± 28.4a,b | 102.2 ± 37.1 | 100.8 ± 35.9 |
 6-min | 70.3 ± 25.8 | 49.9 ± 27.7a | 100.2 ± 32.0a,b | 101.8 ± 32.0 | 105.0 ± 30.4 |
BA-diameter, cm | |||||
 2-min | 0.369 ± 0.022 | 0.350 ± 0.038a | 0.382 ± 0.040a,b | 0.384 ± 0.029 | 0.383 ± 0.031 |
 4-min | 0.373 ± 0.029 | 0.349 ± 0.040a | 0.379 ± 0.038a,b | 0.381 ± 0.033 | 0.381 ± 0.028 |
 6-min | 0.370 ± 0.021 | 0.345 ± 0.029a | 0.380 ± 0.029a,b | 0.381 ± 0.024 | 0.382 ± 0.030 |
SBF-forearm, a.u. | |||||
 2-min | 2.2 ± 1.1 | 4.0 ± 1.9 | 9.8 ± 4.2a,b | 10.9 ± 4.1 | 11.6 ± 3.9 |
 4-min | 2.7 ± 1.4 | 3.9 ± 2.5 | 9.9 ± 3.0a,b | 10.5 ± 3.8 | 11.4 ± 3.2 |
 6-min | 2.0 ± 1.0 | 4.2 ± 1.9 | 11.2 ± 3.5a,b | 11.1 ± 3.7 | 12.3 ± 4.4 |
SR-forearm, mg/min | |||||
 2-min | 0.07 ± 0.02 | 0.10 ± 0.04 | 0.29 ± 0.14a,b | 0.31 ± 0.10 | 0.30 ± 0.22 |
 4-min | 0.05 ± 0.03 | 0.09 ± 0.03 | 0.28 ± 0.12a,b | 0.28 ± 0.19 | 0.27 ± 0.22 |
 6-min | 0.05 ± 0.02 | 0.08 ± 0.03 | 0.30 ± 0.11a,b | 0.30 ± 0.22 | 0.29 ± 0.19 |