The Combined Effects of Lee Silverman Voice Treatment and Abdominal Respiration on the Maximum Phonation Time in Parkinson's Disease

  • Authors

    • Haewon Byeon
    2018-12-13
    https://doi.org/10.14419/ijet.v7i4.39.23712
  • Lee Silverman Voice Treatment, abdominal breathing, LSVT, speech language pathology, Parkinson' disease, maximum phonation time, voice therapy

  • Background/Objectives: The purpose of the our study was to evaluate the effects of a respiratory rehabilitation the forced vital capacity, voice intensity, and maximum phonation time (MPT) of patients with hypokinetic dysarthria.

    Methods/Statistical analysis: This study was carried out on 32 patients with Parkinson's disease (PD). All subjects were randomly assigned to a treatment group (n = 17), which received both abdominal breathing training and LSVT, and a control group (n = 15), which only received abdominal breathing training. The forced expiratory volume at one second (FEV1) was measured in the sitting positing. The coordination of respiration and vocalization was measured by using MPT.

    Findings: The results of ANCOVA, which controlled the pre-test with a covariate, showed that the control group (CG) and the treatment group (TG) were significantly (p<0.05) different in FEV1, MPT, and vocal intensity. The results of parameter estimation revealed that the TG had significantly longer MPT (1.9 seconds longer on average) than the CG and the vocal intensity of the TG was significantly stronger (3.1dB higher on average). On the other hand, FEV1 significantly increased in the TG and the CG after 4 weeks of treatments compared to the baseline. However, there was no significant difference between TG and CG.

    Improvements/Applications: The respiratory rehabilitation composed of LSVT and abdominal breathing was effective in improving not only the vocal intensity of patients with PD but also the coordination of respiration and vocalization.

     

     

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    Byeon, H. (2018). The Combined Effects of Lee Silverman Voice Treatment and Abdominal Respiration on the Maximum Phonation Time in Parkinson’s Disease. International Journal of Engineering & Technology, 7(4.39), 86-89. https://doi.org/10.14419/ijet.v7i4.39.23712