| 2D | 2- Dimensional |
| 3D | 3- Dimensional |
| AKT | Protein kinase B |
| AMPK | 5′ Adenosine monophosphate - activated protein kinase |
| ATP | Adenosine triphosphate |
| BGP-15 | Poly (adenosine 5′-diphosphate)–ribose] polymerase 1 (PARP-1) Inhibitor |
| CIM | Critical illness myopathy |
| CIP | Critical illness polyneuropathy |
| CK | Creatine kinase |
| CMAP | Compound muscle action potential |
| COVID-19 | Coronavirus disease 2019 |
| CSA | Cross sectional area |
| FBOX31, | F-box only protein 31 |
| FDA | Food and drug administration |
| GCaMP6 | Genetically encoded calcium indicator |
| GDF-15 | Growth and differentiation factor 15 |
| HSP | Heat shock protein |
| ICU | Intensive care unit |
| ICUAW | ICU - acquired weakness |
| IF4E- binding protein 1 | Eukaryotic translation initiation factor 4E binding protein 1 |
| IGF1 | Insulin-like growth factor -1 |
| IL-1 | Interleukin-1 |
| IL-6 | Interleukin-6 |
| LC3 -I/II | Microtubule-associated protein light chain 3 (I/II) |
| MAFbx | Muscle-atrophy F box protein |
| MAPK | Mitogen-activated protein kinase |
| MRC | Medical research council |
| mRNA | Messenger RNA |
| mTOR | Mammalian target of rapamycin |
| mTORC1 | Mammalian target of rapamycin complex 1 |
| mTORC2 | Mammalian target of rapamycin complex 2 |
| MuRF1 | Muscle ring finger protein 1 |
| MuRF2 | Muscle ring finger protein 2 |
| MV | Mechanical ventilation |
| MyHC | Myosin heavy chain |
| NF-kB | Nuclear factor-κB |
| NMBA | Neuromuscular blocking agent |
| PGC-1 | Peroxisome proliferator-activated receptor gamma coactivator 1-alpha |
| PI3K | Phosphoinositide 3-kinase |
| RNA | Ribonucleic acid |
| RyR | Ryanodine receptors |
| SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 |
| SERCA | Sarco/endoplasmic reticulum Ca2+ -ATPase |
| TEAD1 | TEA domain transcription factor 1 |
| TFAM | Mitochondrial transcription factor A |
| TGFβ | Transforming growth factor β |
| TNFα | Tumor necrosis factor α |
| TRIM32 | Tripartite motif-containing protein 32 |
| UNC-45B | Unc-45 myosin chaperone B |
| UPS | Ubiquitin proteasome system |
| UTR | Untranslated region |