Muscle Fibre Recruitment:
Muscle fibres across the body innervate with peripheral nerves extending from our central nervous system. These innervations are collectively identified as Motor Units. These Motor Units may be smaller or greater, depending on the diameter of a muscle fibre, or allocation within the body. The larger the muscle fibre, or greater the required force, the more motor units recruited.
Muscle Fibre Type:
Three muscle fibres types exist, each which differentiating levels of innervation. I’ve listed them below in order of recruitment while exercising.