| (R)TDEE | (Relative) Total Daily Energy Expenditure |
| PAL | Physical Activity Level |
| RMR | Resting Metabolic Rate |
| PAEE | Physical Activity Energy Expenditure |
| NEAT | Non–Exercise Activity Thermogenesis |
| METs | Metabolic Equivalents |
| LEA | Low Energy Availability |
| RED–S | Relative Energy Deficiency in Sport |
| DLW | Doubly Labeled Water |
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