Muscle weight measurements of WT and IG KO mice
| Parameter | WT | KO | P-value | % Change |
| Age (d) | 94.38 ± 1.2 (41) | 93.29 ± 1.2 (43) | ||
| Body weight (g) | 25.2 ± 0.4 (41) | 21.6 ± 0.5 (41) | <0.001 | −13.98 |
| Tibia length (mm) | 17.8 ± 0.03 (21) | 17.6 ± 0.06 (21) | −1.02 | |
| Wet weight | ||||
| Soleus (mg) | 8.7 ± 0.2 (30) | 7.3 ± 0.1 (23) | <0.01 | −15.65 |
| TC (mg) | 48.3 ± 0.5 (30) | 49.3 ± 0.9 (23) | 2.07 | |
| Quadriceps (mg) | 194 ± 2.7 (30) | 184 ± 3.4 (23) | −5.39 | |
| EDL (mg) | 10.9 ± 0.1 (30) | 10.6 ± 0.1 (23) | −2.23 | |
| Gastrocnemius (mg) | 127 ± 1.2 (30) | 126 ± 1.7 (23) | −1.24 | |
| Plantaris (mg) | 16.9 ± 0.2 (30) | 16.5 ± 0.2 (21) | −2.59 | |
| Diaphragm (mg) | 80.8 ± 2.1 (38) | 69.1 ± 1.7 (40) | <0.001 | −14.42 |
| Psoas (mg) | 82.4 ± 2.2 (16) | 77.9 ± 2.6 (14) | −5.42 | |
| Tibia length normalized | ||||
| Soleus (mg/mm) | 0.51 ± 0.013 (21) | 0.41 ± 0.009 (21) | <0.001 | −18.61 |
| TC (mg/mm) | 2.75 ± 0.03 (21) | 2.79 ± 0.04 (21) | 1.57 | |
| Quadriceps (mg/mm) | 10.9 ± 0.15 (21) | 10.4 ± 0.16 (21) | −4.41 | |
| EDL (mg/mm) | 0.62 ± 0.005 (21) | 0.60 ± 0.009 (21) | −3.23 | |
| Gastrocnemius (mg/mm) | 7.29 ± 0.06 (21) | 7.16 ± 0.08 (21) | −1.81 | |
| Plantaris (mg/mm) | 0.97 ± 0.01 (21) | 0.93 ± 0.01 (19) | −4.36 | |
| Diaphragm (mg/mm) | 4.47 ± 0.10 (19) | 3.97 ± 0.12 (17) | <0.01 | −11.20 |
| Psoas (mg/mm) | 4.91 ± 0.11 (9) | 4.53 ± 0.14(14) | −7.81 |
| Parameter | WT | KO | P-value | % Change |
| Age (d) | 94.38 ± 1.2 (41) | 93.29 ± 1.2 (43) | ||
| Body weight (g) | 25.2 ± 0.4 (41) | 21.6 ± 0.5 (41) | <0.001 | −13.98 |
| Tibia length (mm) | 17.8 ± 0.03 (21) | 17.6 ± 0.06 (21) | −1.02 | |
| Wet weight | ||||
| Soleus (mg) | 8.7 ± 0.2 (30) | 7.3 ± 0.1 (23) | <0.01 | −15.65 |
| TC (mg) | 48.3 ± 0.5 (30) | 49.3 ± 0.9 (23) | 2.07 | |
| Quadriceps (mg) | 194 ± 2.7 (30) | 184 ± 3.4 (23) | −5.39 | |
| EDL (mg) | 10.9 ± 0.1 (30) | 10.6 ± 0.1 (23) | −2.23 | |
| Gastrocnemius (mg) | 127 ± 1.2 (30) | 126 ± 1.7 (23) | −1.24 | |
| Plantaris (mg) | 16.9 ± 0.2 (30) | 16.5 ± 0.2 (21) | −2.59 | |
| Diaphragm (mg) | 80.8 ± 2.1 (38) | 69.1 ± 1.7 (40) | <0.001 | −14.42 |
| Psoas (mg) | 82.4 ± 2.2 (16) | 77.9 ± 2.6 (14) | −5.42 | |
| Tibia length normalized | ||||
| Soleus (mg/mm) | 0.51 ± 0.013 (21) | 0.41 ± 0.009 (21) | <0.001 | −18.61 |
| TC (mg/mm) | 2.75 ± 0.03 (21) | 2.79 ± 0.04 (21) | 1.57 | |
| Quadriceps (mg/mm) | 10.9 ± 0.15 (21) | 10.4 ± 0.16 (21) | −4.41 | |
| EDL (mg/mm) | 0.62 ± 0.005 (21) | 0.60 ± 0.009 (21) | −3.23 | |
| Gastrocnemius (mg/mm) | 7.29 ± 0.06 (21) | 7.16 ± 0.08 (21) | −1.81 | |
| Plantaris (mg/mm) | 0.97 ± 0.01 (21) | 0.93 ± 0.01 (19) | −4.36 | |
| Diaphragm (mg/mm) | 4.47 ± 0.10 (19) | 3.97 ± 0.12 (17) | <0.01 | −11.20 |
| Psoas (mg/mm) | 4.91 ± 0.11 (9) | 4.53 ± 0.14(14) | −7.81 |
n values are shown in parentheses. Percent change is calculated as [(KO − WT)/WT] × 100.