When performing a kinesiologic electromyography (EMG)examination on a patient,the examiner notes increase in EMG amplitude as the muscle begins to fatigue from multiple repetitions of the contraction.What can the therapist infer from this finding?

Question

Quizplus · Accepted Answer

An increase in EMG amplitude as the muscle fatigues is a typical finding and indicates that the muscle is functioning normally. As the muscle fatigues, it requires more motor units to generate the same force, which results in increased motor unit recruitment and increased EMG amplitude. This finding indicates that the muscle has adequate endurance and is able to maintain force output despite fatigue.

When Performing a Kinesiologic Electromyography (EMG)examination on a Patient,the Examiner