| Bf | breathing frequency |
| BMI | body mass index |
| CWL | chest wall loading |
| CWL+R | chest wall loading with restriction |
| DeoxHb | deoxyhemoglobin |
| EELV | end-expiratory lung |
| EFL | expiratory flow limitation |
| EILV | end-inspiratory lung volume |
| FEV1 | forced expiratory volume in one second |
| FVC | forced vital capacity |
| Hbtot | total hemoglobin content |
| HR | heart rate |
| LC | load carriage |
| MVC | maximum voluntary contractions |
| NIRS | near infrared spectroscopy |
| OxyHb | oxygenated hemoglobin |
| PO | power output |
| RER | respiratory exchange ratio |
| RPE | total body ratings of perceived exertion |
| RPEdyspnea | dyspnea |
| RPEleg | leg RPE |
| RPM | revolutions per minute |
| StO2 | tissue saturation |
| TT | time trial |
| VAS | visual analog scale |
| VCO2 | carbon dioxide production |
| VE | pulmonary ventilation |
| VE/VCO2 | ventilatory equivalent for carbon dioxide |
| VE/VO2 | ventilatory equivalent for oxygen |
| VO2 | O2 uptake |
| VT | tidal volume |
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