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Absolute energy expenditure between cycling and uphill running. |
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| Component |
Cycling |
Running |
Sig. (p) |
|
|
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| VO2 max (ml·kg·min-1) |
57.0 ± 12.9 |
59.3 ± 13.7 |
0.44 |
| Exercise O2 (kJ) |
31.7 ± 7.7 |
41.4 ± 6.9 |
0.0001 |
| △blood lactate (kJ) |
32.7 ± 8.9 |
22.5 ± 11.1 |
0.009 |
| Exercise O2 + △blood lactate (kJ) |
64.3 ± 12.2 |
63.9 ± 10.1 |
0.90 |
| EPOC (kJ) |
53.7 ± 21.6 |
61.5 ± 11.7 |
0.21 |
| Exercise O2 + EPOC (kJ) |
85.4 ± 20.2 |
103.0 ± 13.5 |
0.008 |
| Total Energy Expenditure (kJ) |
118.0 ± 21.9 |
125.4 ± 19.2 |
0.36 |
|
Mean ± SD. See methods section for energy expenditure conversions. Total energy expenditure equals exercise oxygen uptake + △blood lactate + modified EPOC. Power output was preset at 250 Watts for each 1-minute test. Peak power outputs during max testing were 279 ± 33 Watts for cycling and an estimated 281 ± 65 Watts for uphill treadmill running (highest treadmill work rate achieved). Resting oxygen uptake was subtracted from exercise oxygen uptake and EPOC measurements. Resting energy expenditure was not different between trials (9.3 ± 1.6 kJ min-1, cycle; 9.5 ± 2.1 kJ min-1, run) (p = 0.62). Respiratory exchange ratio (RER) at rest was not different between trials (0.84 ± 0.05, cycle; 0.83 ± 0.06, run) (p = 0.52). | |||
Scott et al. Nutrition & Metabolism 2006 3:1 doi:10.1186/1743-7075-3-1 |
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