The effects of the Lee Silverman Voice Treatment program and traditional dysarthria therapy in flaccid dysarthria
Gamal Y Selim Youssef Bsc, MSc, MD. 1, Amr Anter2, Hatem E Hassen3
1 Department of Phoniatrics, Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt; Phoniatrics Unit, Department of ENT, Dubai Hospital, Dubai, United Arab Emirates
2 Department of Phoniatrics, Otorhinolaryngology, Faculty of Medicine, Bani Sweef University, Bani Sweef, Egypt; Department of Phoniatrics, Al Mafriq Hospital, Abu Dhabi, United Arab Emirates
3 Department of Phoniatrics, Otorhinolaryngology, Faculty of Medicine, Sohag University, Sohag, Egypt
Gamal Y Selim Youssef
Phoniatrics Unit, Department of ENT, Dubai Hospital, PO Box 7272, Dubai, United Arab Emirates
Source of Support: None, Conflict of Interest: None
The aim of this study was to investigate the short-term and long-term speech effects of the Lee Silverman Voice Treatment (LSVT) program in a group of individuals with flaccid dysarthria and compare its effectiveness with traditional dysarthria therapy (TDT) methods.
This study was designed as a randomized controlled trial.
Patients and methods
The study included 22 patients with flaccid dysarthria who were randomized into two groups and received either the LSVT or the TDT. Both interventions were administered at the same frequency, for 1 h a day, 4 days a week, for 4 weeks. Participants underwent a three-phase assessment: (a) before treatment, (b) immediately after treatment, and (c) 6 months after treatment or follow-up. Outcome measures included auditory perceptual analysis, acoustic and spectral analysis, aerodynamic analysis, nasometry, and Communication Partner questionnaire.
There was significant improvement in most auditory perceptual analysis and instrumental variables in both treatment groups but most of these improvements were not maintained during follow-up in either group. Comparative statistical analysis revealed no significant differences between the two groups in the three assessment phases in most studied variables.
The apparent equity between LSVT and TDT in flaccid dysarthria highlights the clinical value of teaching the LSVT method and the potential for this treatment to yield improvements comparable to traditional articulation therapy methods through a technique that is cognitively less demanding. Thus the advantage of LSVT is not the amount of improvement but the less-demanding nature, cognitive-wise, of the technique.