Global Muscle Stimulator Market Analysis By Product Type (Neuromuscular Electrical Stimulation, Functional Electrical Stimulation, Transcutaneous Electrical Nerve Stimulation, Interferential, Other Product Types), By Modality (Handheld and Portable, Tabletop), By Application (Neurological Disorders, Pain Management, Musculoskeletal Disorders, Other Applications), By Region and Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2024-2033