Table 1 Medical research council MMT; recoding from six-point to modified 0–3 scale
From: MRI of trunk muscles and motor and respiratory function in patients with myotonic dystrophy type 1
Six-point ordinal scale | 0–3 Interval scale |
|---|---|
0 = No muscle contraction | 0 = Paralysis |
1 = Flicker or trace of muscle contraction | 1 = Severe weakness defined as > 50% loss of strength |
2 = Active movement with gravity eliminated | |
3 = Reduced power but active movement against gravity | 2 = Slight weakness < 50% loss of strength |
4 = Reduced power but active movement against gravity and resistance | |
5 = Normal power against full resistance | 3 = Normal strength |