TABLE 1.
MLSS | VT1 | MPVT | VT2 | RER=1.00 | Maximum | |
---|---|---|---|---|---|---|
Workload (W) Workload (W·kg-1) %Workloadmax |
284 ± 30 4.0 ± 0.4 60.0 ± 5.6 |
253 ± 37 3.5 ± 0.5 53.3 ± 6.3 |
311 ± 32 4.3 ± 0.5 65.8 ± 5.6 |
370 ± 32a 5.2 ± 0.6a 78.3 ± 6.3a |
347 ± 35a 4.9 ± 0.6a 73.8 ± 8.6a |
476 ± 62a 6.6 ± 0.5a 100.0a |
VO2 (mL·min-1) VO2 (mL·min-1·kg-1) %VO2max VCO2 (mL·min-1) VE (L·min-1) |
4225 ± 414 58.8 ± 4.7 81.8 ± 7.0 3821 ± 404 121 ± 12 |
3244 ± 464a 45.2 ± 6.5a 62.7 ± 7.6a 2802 ± 458a 72 ± 15a |
4052 ± 362 56.6 ± 6.3 78.5 ± 5.9 3712 ± 415 99 ± 11a |
4588 ± 364 64.2 ± 7.3 88.9 ± 4.8 4534 ± 416a 123 ± 12 |
4367 ± 386 61.9 ± 8.4 87.2 ± 4.8 4384 ± 389 119 ± 12 |
5175 ± 474a 72.4 ± 8.7a 100.0a 5173 ± 256a 176 ± 12a |
HR (beats·min-1) RR (breaths·min-1) PETO2 (kPa) PETCO2 (kPa) |
175 ± 8 47 ± 7 13.5 ± 0.5 4.7 ± 0.5 |
155 ± 14a 31 ± 6a 12.2 ± 0.5a 5.6 ± 0.5a |
171 ± 10 37 ± 5a 12.8 ± 0.4a 5.3 ± 0.4 |
183 ± 10 41 ± 5 13.2 ± 0.5 5.3 ± 0.5 |
179 ± 8 41 ± 6 13.2 ± 0.4 5.3 ± 0.4 |
194 ± 6a 59 ± 6a 14.2 ± 0.5a 4.4 ± 0.5 |
VE·VO2-1 VE·VCO2-1 [La-] (mmol·L-1) |
28.5 ± 2.7 31.6 ± 3.8 3.60 ± 0.81 |
21.6 ± 2.3a 24.9 ± 2.3a 1.32 ± 0.43a |
23.8 ± 2.1a 26.0 ± 1.8a 1.90 ± 0.69a |
26.2 ± 2.6 26.5 ± 2.3a 3.40 ± 1.27 |
26.5 ± 2.1 26.4 ± 2.1a 2.76 ± 1.25 |
34.1 ± 2.9a 33.6 ± 2.2 8.10 ± 1.90a |
Note: VT1, first ventilatory threshold; MPVT, midpoint between the ventilatory thresholds; VT2, second ventilatory threshold; RER=1.00, respiratory exchange ratio equal to 1; MLSS, maximal lactate steady state; %Workloadmax, percentage of maximal workload; VO2, oxygen uptake; %VO2max, percentage of maximal oxygen uptake; VCO2, carbon dioxide production; VE, ventilation; HR, heart rate; RR, respiratory rate; PETO2, end tidal partial pressure of oxygen; PETCO2, end tidal partial pressure of carbon dioxide.
Significantly different from MLSS.