LSVT LOUD is a treatment approach conducted by speech language pathologists for people with Parkinson’s Disease (PD). In the 1980s, LSVT LOUD was developed by speech pathologist Lorraine Ramig, PhD and colleagues. To date, LSVT LOUD retains Level I clinical outcome data for the most efficacious treatment approach for individuals with PD.

LSVT LOUD treatment targets the sensorimotor misperception typical in PD (i.e. soft voice) with increased amplitude of motor output, i.e. LOUD. LSVT LOUD promotes neuroplastic changes (i.e. promotes automation of appropriate loudness) via intense, repetitive and frequent practice. Thus, patients complete a protocol of 4, 1-hour sessions a week for 4 weeks for a total of 16 sessions. Upon completion of the program, patients are recommended to continue home exercises twice daily indefinitely for maintenance of function. 80% of patients who have completed LSVT LOUD maintain function (with twice daily completion of home exercises) for up to 24 months (see:

For more information regarding speech and voice changes in PD:

Links to research articles: