Table 3:
Marginal mean estimates (and 95% confidence intervals) for T2, AFD, and FF across MUR and FP/PSW grades. The number of muscles included is given for each grade.
| T2 (msec) | AFD (μm) | FF (%) | |
|---|---|---|---|
| MUR | |||
| Full (n=41) | 39.40 (35.72, 43.08) | 78.35 (72.52, 84.19) | 4.54 (2.11, 6.97) |
| Reduced (n=18) | 47.77 (43.09, 52.45) | 67.30 (59.49, 75.12) | 4.90 (2.30, 7.50) |
| Discrete (n=27) | 53.39 (49.31, 57.46) | 59.44 (52.79, 66.08) | 7.46 (4.97, 9.95) |
| None (n=41) | 54.07 (50.29, 57.86) | 56.77 (50.80, 62.75) | 6.00 (3.56, 8.45) |
| FP/PSW | |||
| 0 (n=49) | 40.69 (36.90, 44.48) | 75.18 (68.92, 81.44) | 4.94 (2.44, 7.44) |
| 1+ (n=14) | 53.23 (47.55, 58.91) | 70.38 (60.66, 80.09) | 6.18 (3.31, 9.06) |
| 2+ (n=31) | 50.29 (46.13, 54.45) | 58.93 (51.93, 65.93) | 5.56 (3.00, 8.12) |
| 3+ (n=34) | 55.74 (51.42, 60.05) | 56.52 (49.30, 63.74) | 6.61 (4.02, 9.20) |
| 4+ (n=0) | - | - | - |
AFD: apparent fiber diameter, FF: fat fraction, EMG: electromyography, MUR: motor unit recruitment, FP/PSW: fibrillation potentials/positive sharp waves