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Lee Silverman Voice Treatment

The LSVT® LOUD (Lee Silverman Voice Treatment) is a type of speech therapy designed to improve both the voice and speech of individuals with Parkinson’s disease by treating the underlying physical pathologies associated with the disorder.

This is the first speech treatment with level 1 evidence and established efficacy for treating voice and speech disorders in individuals with Parkinson’s disease with applications to other neurological disorders (CVA, MS and others). It is backed by over 20 years of research.

LSVT Treatment

Treatment focuses on improving loudness and immediate carryover into daily communication enabling patients to maintain and improve oral communication


  1. Therapy is administered on an intensive schedule of 4 days a week for 4 weeks in 60 minutes sessions.
  2. Daily variables (first half of every session)
  3. Hierarchical speech loudness tasks (second half of every session)
  4. Integration of the five essential concepts

All focus on LOUD

All are high effort

All are completed daily and quantified

All are tools for calibration

Speech Production Tasks:

Week 1: Words

Week 2: Phrases

Week 3: Reading aloud

Week 4: Conversation

Why is the LVST Program Successful?

By incorporating sensory awareness training, the patient feels more comfortable using their new louder voice

Intensive mode of administration is essential to maintain optimum treatment results

“Loudness” functions as a single motor organizing theme which enhances overall speech

The Program Incorporates:

Enhancing the vocal source (adduction)

Using phonation as a trigger to increase effort and coordination through stimulating the “loud” global variable (respiratory support)

Retraining sensory processing during the speech production (increasing fundamental frequency range)

1 hour therapy sessions/4 times a week/1month

Receive 13-16 hours of individual therapy

LVST Facts:

New research shows consistent improvement in dysphagia in these populations by improving range of motion and vocal fold closure. (Even when you are targeting voice)

90% of patients improve vocal loudness from Pre to Post treatment

Approximately 80% of patients maintain improvements in their voice for 12-24 months after the treatment

Treatment focuses on improving vocal loudness and immediate carryover into daily communication enabling patients to maintain and/or improve their oral communication

Almost all patients and family report improvement in their ability to communicate, despite the severity level


Talk to one our friendly staff members