Table 2.
Metabolic response in the moderate, heavy and severe exercise domains
| Load | VO2 | VCO2 | VE | HR | [La−] | |
|---|---|---|---|---|---|---|
| Time Segment | (W) | (ml*min−1) | (ml*min−1) | (L*min−1) | (b*min−1) | (mmol*L) |
| Severe | ||||||
| Warm-up | 20.0 ± 0.0 | 1034.5 ± 51.4 | 743.8 ± 479.1 | 17.7 ± 2.2 | 73.2 ± 9.6 | 1.7 ± 0.6 |
| 0 to 3 min | 267.0 ± 37.5 | 3198.7 ± 435.6 | 3585.8 ± 599.2 | 92.9 ± 26.9 | 157.3 ± 4.7 | 6.7 ± 1.6 |
| 3 to 6 min | 267.0 ± 37.5 # | 3489.1 ± 498.8 # | 3792.3 ± 597.9 # | 109.9 ± 31.1 # | 169.5 ± 5.5 | 9.2 ± 2.4 # |
| 6 to 9 min | 267.0 ± 37.5 #* | 3615.5 ± 521.9 #* | 3888.1 ± 634.2 #* | 119.1 ± 31.0 #* | 175.2 ± 4.8 # | 10.7 ± 2.5 #* |
| Heavy | ||||||
| Warm-up | 20.0 ± 0.0 | 1067.7 ± 57.6 | 605.8 ± 58.6 | 18.6 ± 2.6 | 74.2 ± 8.4 | 1.8 ± 0.8 |
| 0 to 3 min | 208.9 ± 28.7 | 2771.6 ± 429.3 | 2748.8 ± 438.2 | 66.5 ± 14.4 | 141.5 ± 11.2 | 3.4 ± 1.1 |
| 3 to 6 min | 208.9 ± 28.7 # | 2851.5 ± 425.4 # | 2818.3 ± 400.8 # | 70.9 ± 13.4 # | 146.3 ± 15.3 | 3.9 ± 1.4 |
| 6 to 9 min | 208.9 ± 28.7 # | 2822.7 ± 395.7 # | 2741.1 ± 367.5 # | 71.0 ± 13.1 # | 151.1 ± 15.2 | 4.1 ± 1.4 |
| Moderate | ||||||
| Warm-up | 20.0 ± 0.0 | 1026.3 ± 65.3 | 566.4 ± 60.7 | 17.1 ± 1.7 | 73.3 ± 8.5 | 1.7 ± 0.6 |
| 0 to 3 min | 128.7 ± 27.0 | 1951.6 ± 261.7 | 1731.0 ± 275.5 | 42.9 ± 8.1 | 117.5 ± 23.6 | 2.4 ± 0.8 |
| 3 to 6 min | 128.7 ± 27.0 | 1987.1 ± 277.4 | 1841.5 ± 275 | 45.3 ± 7.2 | 122.0 ± 27.0 | 1.8 ± 0.6 |
| 6 to 9 min | 128.7 ± 27.0 | 1992.3 ± 298.7 | 1871.7 ± 332.7 | 47.6 ± 9.8 | 122.9 ± 29.0 | 1.3 ± 0.3 |
Values are means ±SD. Values of PO and per-min measures of VO2, VCO2, VE, and HR in the last 30s of each time segment are displayed, along with measures of lactate concentration ([La−]) at the end of warm-up and at the end of each time segment. ANOVA revealed a significant “intensity” × “time” interaction for VO2 (p ≤ 0.001), VCO2 (p = 0.014), VE (p ≤ 0.001), HR (p = 0.011) and [La−] (p ≤ 0.001). Multiple comparisons are also displayed: # represents significant statistical difference with 0 to 3 min segment; * represents significant statistical difference with 3 to 6 min segment. For greater clarity were omitted: comparisons vs warm-up (always significantly different, with the only exception of [La−] in the moderate exercise intensity domain) and between exercise domains (always significantly different, with the only exception of HR between “severe” and “heavy” during the 0–3 segment)