Table 6.
Work, energy expenditure and mechanical efficiency during moderate and vigorous constant-load exercise
| All | Male | Female | p-value | |
|---|---|---|---|---|
| Resting energy expenditure (kcal/min) | 1.31 ± 0.36 | 1.52 ± 0.36 | 1.01 ± 0.24 | <0.01 |
| Moderate | ||||
| Work (kcal/min) | 1.15 ± 0.36 | 1.41 ± 0.29 | 0.92 ± 0.22 | <0.01 |
| Energy expenditure (kcal/min) | 5.01 ± 1.50 | 6.13 ± 1.14 | 3.96 ± 0.91 | <0.01 |
| Energy expenditure/Watts (kcal/min)/Watt | 0.62 ± 0.006 | 0.063 ± 0.009 | 0.63 ± 0.01 | 0.52 |
| VE/VO2 | 27.5 ± 3.4 | 26.1 ± 2.7 | 28.9 ± 3.4 | <0.01 |
| VE/VO2/Watt | 0.38 ± 0.15 | 0.28 ± 0.08 | 0.48 ± 0.13 | <0.01 |
| VE/VCO2 | 30.5 ± 2.8 | 29.0 ± 1.9 | 32.0 ± 2.8 | <0.01 |
| Mechanical efficiency (%) | 23.2 ± 3.7 | 23.1 ± 3.8 | 23.4 ± 3.6 | 0.59 |
| Vigorous | ||||
| Work (kcal/min) | 2.29 ± 0.73 | 2.81 ± 0.60 | 1.80 ± 0.46 | <0.01 |
| Energy expenditure (kcal/min) | 9.59 ± 3.19 | 11.98 ± 2.45 | 7.37 ± 1.96 | <0.01 |
| Energy expenditure/Watts (kcal/min)/Watt | 0.006 ± 0.007 | 0.061 ± 0.006 | 0.059 ± 0.007 | <0.01 |
| VE/VO2 | 34.4 ± 4.9 | 33.4 ± 5.0 | 35.3 ± 4.6 | <0.01 |
| VE/VO2/Watt | 0.24 ± 0.09 | 0.18 ± 0.06 | 0.30 ± 0.08 | <0.01 |
| VE/VCO2 | 32.8 ± 4.2 | 31.5 ± 4.0 | 34.0 ± 4.0 | <0.01 |
| Mechanical efficiency (%) | 24.1 ± 2.6 | 23.5 ± 2.3 | 24.6 ± 2.7 | <0.01 |
| Delta efficiency (vigorous-moderate) | 0.82 ± 2.12 | 0.37 ± 2.25 | 1.24 ± 1.69 | 0.10 |