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|2000 ||Ward, E. C., Theodoros, D. G., Murdoch, B. E. and Silburn, P. (2000) Changes in Maximum Capacity Tongue Function following the Lee Silverman Voice Treatment Program. Journal of Medical Speech Language Pathology, 8 4: 331-335.|
The impact of the Lee Silverman Voice Treatment (LSVT) program on measures of maximum tongue pressure, rate of repetitive tongue movements, and endurance was compared across two groups of subjects with Parkinson disease (PD): 18 nonsurgical subjects with PD (NS-PD) and 12 surgical PD (S-PD) subjects who had undergone either pallidotomy and/or thalamotomy procedures, While both subject groups demonstrated significant improvements in sentence intelligibility and sound pressure levels (SPL) in sustained phonation and reading tasks, only the NS-PD group demonstrated significant improvements in tongue pressures post treatment, with 50% of this group also demonstrating improved endurance. No change in the rate of tongue movements was noted post treatment in either group. The improved tongue strength and endurance noted in the NS-PD group provides further support for the positive, global effects of treatment programs incorporating increased SPL on the physiological functioning of the speech mechanism in speakers with PD. The fact that the S-PD group demonstrated no change in tongue function post-treatment may be due to the increased severity of dysarthria and PD symptoms demonstrated in this group, and/or the impact of neurosurgical procedures.
| Professor Deborah Theodoros, Dr Elizabeth Ward, Professor Bruce Murdoch|
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|Keywords: ||Clinical Neurology, Parkinson-disease, Speech|