Table 1.
Baseline systemic metabolic activity in wild-type and β2−/− mice.
| Wild-type | β2−/− | |||
|---|---|---|---|---|
| Light | Dark | Light | Dark | |
| VO2 (ml/h/kg) | 3,211 ± 115 | 3,525 ± 93 | 3,365 ± 149 | 3,680 ± 175 |
| VCO2 (ml/h/kg) | 2,931 ± 121 | 3,310 ± 100 | 3,036 ± 143 | 3,403 ± 167 |
| VCO2:VO2 (RER) | 0.91 ± 0.01 | 0.90 ± 0.01 | 0.94 ± 0.02 | 0.93 ± 0.01 |
| En. Exp. (Kcal/h/kg) | 15.9 ± 0.6 | 17.6 ± 0.5 | 16.7 ± 0.8 | 18.3 ± 0.9 |
VO2, oxygen consumption rate; VCO2, carbon dioxide production rate; RER, respiratory exchange ratio; En. Exp.: energy expenditure. Values represent mean ± standard error over 12 h light or dark phase periods. p > 0.05. for each, β2−/− light vs. wild-type light or β2−/− dark vs. wild-type dark, one-way ANOVA with Šídák's multiple comparisons test, n = 8 each.