Table 2. Mean ± SD and percentage difference of MRI and DXA measurements in 32 persons with SCI.
| Measurement | Mean ± SD | Range | P-values | Percentage Difference |
|---|---|---|---|---|
| MMMRI-WM | 3.13 ± 0.72 kg | 1.9–5.1 kg | <0.0001 | 7.3% |
| LMDXA | 3.36 ± 0.72 kg | 1.9–5.0 kg | ||
| MMMRI-ABS | 2.79 ± 0.65 kg | 1.4–3.9 kg | <0.0001 | 20.4% |
| LMDXA | 3.36 ± 0.72 kg | 1.9–5.0 kg | ||
| MMMRI-WM/FFMDXA | 89.26 ± 6.47% | 76.7–100% | <0.0001 | 6.9% |
| LMDXA/FFMDXA | 95.86 ± 0.97% | 93.9–97.7% | ||
| MMMRI-ABS/FFMDXA | 79.01 ± 8.05% | 63.8–96.4% | <0.0001 | 16.4% |
| LMDXA/FFMDXA | 95.86 ± 0.97% | 93.9–97.7% | ||
| MMMRI-KE | 1.39 ± 0.34 kg | 0.75–2.11 kg | <0.0001 | 26.0% |
| LMDXA-KE | 1.75 ± 0.37 kg | 0.97–2.60 kg |
MM, muscle mass; LM, lean mass; MMMRI-WM, MM measured by MRI using thigh whole muscle CSA; LMDXA, LM measured by DXA; MMMRI-ABS, MM measured by MRI using whole thigh muscle CSA after subtracting intramuscular fat; LMDXA-KE, predicted knee extensor LM using ratio; MMMRI-KE, knee extensor muscle mass measured by MRI.