What is indicated by MMT grade 5?

A Manual Muscle Test (MMT) grade of 5 indicates the ability to hold the test position against strong pressure. This grade represents normal muscle strength, which means that the muscle can maintain its position and resist maximal resistance without any noticeable weakness or lack of control. In practical terms, this signifies that the muscle is functioning optimally, supporting activities that require strength and stability.

Understanding the context of muscle testing is important. For instance, a grade indicating the ability to hold a position against gravity, but not maximal resistance, suggests a lower level of strength (typically grade 3 or 4 in the MMT scale). Similarly, the absence of ability to hold a position signifies very limited muscle function (usually grade 0). A grade of 5, therefore, distinctly indicates that the muscle can handle significant force without compromising its integrity or function.