Table 2.
Energy expenditure and movement: energy expenditure
| TEE, kcal/24 h | REE, kcal/24 h | NREE, kcal/24 h | Movement, 1000×) | |
|---|---|---|---|---|
| Calo 2: 30°C, WR | ||||
| HFD-AL | 9.3 ± 0.3A | 5.6 ± 0.3A | 3.7 ± 0.1A | 158.8 ± 28.6A |
| HFD-WR | 6.7 ± 0.2C | 4.0 ± 0.1B | 2.7 ± 0.1B | 162.8 ± 21.9A |
| LFD-AL | 7.7 ± 0.1B | 4.1 ± 0.1B | 3.6 ± 0.1A | 251.7 ± 24.0B |
| Calo 3: 22°C, WR | ||||
| HFD-AL | 16.3 ± 0.7A€ | 12.4 ± 0.5A€ | 3.9 ± 0.1A∈ | 106.7 ± 16.4A |
| HFD-WR | 12.1 ± 0.2B€ | 8.6 ± 0.2B€ | 3.5 ± 0.1A∈ | 175.0 ± 12.5B |
| LFD-AL | 12.8 ± 0.4B€ | 8.7 ± 0.3B€ | 4.1 ± 0.1A∈ | 210.1 ± 13.7B |
| Calo 4: 22°C, Post-WR | ||||
| HFD-AL | 15.8 ± 0.7A | 11.7 ± 0.7A | 4.1 ± 0.2A$ | 88.5 ± 15.9A |
| HFD-WR | 15.8 ± 0.4A$ | 11.9 ± 0.4A$ | 3.9 ± 0.3A | 131.0 ± 12.7A |
| LFD-AL | 15.8 ± 0.5A$ | 12.0 ± 0.2A$ | 3.8 ± 0.3A | 139.6 ± 14.0A |
Values are expressed as means ± SE.TEE, total energy expenditure; REE, resting energy expenditure (lowest 1-h TEE period); NREE, nonresting energy expenditure (calculated as TEE − REE) and ambulatory movement (1000×) for all three mouse groups at 30°C (Calo 2, Phase 2), 22°C (Calo 3, Phase 3) and following diet switch to HFD at 22°C (Calo 4, Phase 4).
A,B,C Levels not connected by same letter within Calo measurement period are significantly different (P < 0.05).
€
Significantly different (P < 0.05) between Calo 3 and Calo 2 (ambient temperature comparison).
$
Significantly different (P < 0.05) between Calo 4 and Calo 3. HFD feeding for all group comparison.