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. Author manuscript; available in PMC: 2022 Nov 1.
Published in final edited form as: Mol Genet Metab. 2021 Oct 9;134(3):223–234. doi: 10.1016/j.ymgme.2021.10.002

Table 3:

Comparison of Traditional mMRC Scale vs Utilized Modified Scale (0–12)

MRC mMRC Our scale Description of strength
5 5 12 Normal – Full strength – able to maintain test position against max resistance of examiner
4+ 11
4 4 10 Good- able to maintain test position against moderate resistance
4− 9
3+ 8
3 3 7 Fair – able move through full range against gravity (no resistance)
3− 6
2+ 5
2 2 4 Poor – Moves full range in gravity eliminated position
2− 3
1+ 2
1 1 1 Trace – able to palpate or observe contraction but no movement possible
0 0 0 No muscle contraction present