| MET | Metabolic equivalent |
| RMR | Resting metabolic rate |
| PAL | Physical activity level |
| TEE | Total energy expenditure |
| BMI | Body mass index |
| V’O2 | Oxygen consumption |
| V’CO2 | Carbon dioxide production |
| AEE | Activity energy expenditure |
| DLW | Doubly labelled water |
| CI | Confidence Intervals |