Final answer:
High-Frequency Fatigue is characterized by an excessive loss of force at high frequencies of stimulation and rapid recovery when the frequency is reduced.
Step-by-step explanation:
High-Frequency Fatigue, also known as electromechanical failure, is characterized by an excessive loss of force at high frequencies of stimulation and rapid recovery when the frequency is reduced. For example, when a muscle is stimulated at a high frequency, it may lose its ability to contract effectively, leading to fatigue. However, when the frequency is reduced, the muscle can recover and regain its force. Therefore, the statement is a) True.