| SCI | Spinal cord injury |
| ES | Electrical stimulation |
| FES | Functional electrical stimulation |
| NMES | Neuromuscular electrical stimulation |
| FMS | Functional magnetic stimulation |
| scTS | Spinal cord transcutaneous stimulation |
| FEV1 | Forced expiratory volume in 1 s |
| PEFR | Peak expiratory flow rate (PEFR) |
| PEmax | Maximum expiratory pressure |
| PImax | Maximum inspiratory pressure |
| MECP | Maximum expiratory cough pressure |
| VO2 | Level of oxygen uptake |
| RPE | Rate of perceived exertion |
| ERV | Expiratory reserve volume |
| FEF | Forced expiratory flow rate |
| FVC | Forced vital capacity |
| VC | Vital capacity |
| VT | Tidal volume |
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