What does a 3/5 grade indicate on MMT?

What does a 3/5 grade indicate on MMT?

• A. Active movement through the full available range of motion against gravity, with no external resistance.
• B. Movement through the full range with maximal resistance.
• C. Movement only with gravity eliminated.
• D. No movement.

Answer: (A)

In manual muscle testing, a grade of three out of five means the muscle can move the limb through the full available range while the limb is held in a position against gravity, but it cannot tolerate any external resistance. This shows the muscle can generate enough force to complete the motion on its own in the anti-gravity position, yet it isn’t strong enough to hold up against added load. It sits between moving through the range with gravity eliminated (lower grade) and moving through the range with some resistance (higher grades). For example, elbow flexors can bend the elbow through the full arc while seated, but you wouldn’t be able to apply resistance to that movement.

In manual muscle testing, a grade of three out of five means the muscle can move the limb through the full available range while the limb is held in a position against gravity, but it cannot tolerate any external resistance. This shows the muscle can generate enough force to complete the motion on its own in the anti-gravity position, yet it isn’t strong enough to hold up against added load. It sits between moving through the range with gravity eliminated (lower grade) and moving through the range with some resistance (higher grades). For example, elbow flexors can bend the elbow through the full arc while seated, but you wouldn’t be able to apply resistance to that movement.