Which grade on the MMT scale is described as 'Full ROM in gravity eliminated position'?

• A. 2 Poor
• B. 3 Fair
• C. 4 Good
• D. 5 Normal

Answer: (A)

In manual muscle testing, strength is graded by how movement occurs with or without gravity and with or without resistance. The description “Full ROM in gravity eliminated position” matches the grade labeled Poor. This means the muscle can move the limb through its entire available range when gravity isn’t a factor (the limb is supported), but it cannot move against gravity. It shows some muscle function, but not enough to overcome the downward pull of gravity.

For context, moving through full ROM against gravity corresponds to the next higher grade (where gravity is present and no or some resistance is applied). The next levels describe full ROM against gravity with increasing resistance (some resistance, then maximal resistance). Lower end grades describe only a trace contraction or no contraction at all.