Final answer:
Extensor load information impacts the stance phase by providing sensory feedback to the brain that helps maintain balance, stability, and efficient movement.
Step-by-step explanation:
Extensor load information refers to the sensory feedback generated by the muscles and joints involved in extending the body during the stance phase. During the stance phase of walking or running, extensor muscles in the legs are responsible for supporting the weight of the body and propelling it forward.
The feedback from these muscles and joints provides important information to the brain about the position and movement of the body. This information helps the brain adjust the motor commands sent to the muscles to maintain balance, stability, and efficient movement.