Which description corresponds to a 4/5 MMT strength grade (Good)?

• A. Partial ROM in test position
• B. Against moderate pressure
• C. No contraction felt or seen
• D. Full ROM against gravity

Answer: (B)

Understanding how manual muscle testing grades work helps here. A 4/5 Good grade means the muscle can move the joint through its full range of motion against gravity and can also resist a moderate external force. The description that fits this is moving through full ROM while facing moderate pressure from the examiner—i.e., full range with moderate resistance. Other options describe different strengths: partial ROM indicates not completing the full range (lower grade), no contraction is a 0, and full ROM against gravity with no resistance describes a 3, not 4/5.