Sentence Intelligibility Before and After Voice Treatment in Speakers With Idiopathic Parkinson's Disease
Sentence Intelligibility Before and After Voice Treatment in Speakers With Idiopathic Parkinson's Disease
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DOI：
10.1016/j.jvoice.2011.08.014
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发表时间：
2012-03-01
期刊：
影响因子：
2.2
通讯作者：
Pfeiffer, Ronald M.
中科院分区：
文献类型：
--
作者：
Cannito, Michael P.;Suiter, Debra M.;Pfeiffer, Ronald M.
目标/假设。本研究的目的是确定患有特发性帕金森病 (PD) 的人的句子清晰度是否会因李·西尔弗曼语音治疗 (LSVT) 得到改善。假设所有说话者在治疗后都会得到改善，与声音响度增加有关，这是治疗的主要目标。研究设计。对八名患有帕金森病的演讲者进行了前瞻性研究，采用单盲、随机治疗前后设计，并在治疗前后进行多次每日评估。对所得数据进行回归均值校正。方法。在粉红噪声存在的情况下，将特发性帕金森病说话者在治疗前后所产生的句子的随机数字录音以均衡的对话响度强度呈现给听力正常的听众。计算治疗前后的单词理解百分比。还分析了总体声音强度的变化。结果。声音治疗前后存在统计学上显着的群体效应；然而，治疗与演讲者之间也存在显着的互动。六名患有PD的说话者在语音治疗后显着改善，一名没有变化，一名在治疗后句子清晰度下降。结论。 LSVT 使研究中大多数说话者的句子清晰度显着提高，但对其中两名说话者却没有好处，尽管他们提高了整体声音响度。
Objectives/Hypothesis. The purpose of this study was to determine whether sentence intelligibility improves in speakers with idiopathic Parkinson's disease (PD) as a result of Lee Silverman Voice Treatment (LSVT). It was hypothesized that all the speakers would improve following treatment, in association with increased vocal loudness, which was the primary target of the treatment.Study Design. Prospective study of eight Speakers with PD using a single-blinded, randomized pre-post treatment design, with multiple daily assessments before and after treatment was carried out. Resultant data were corrected for regression to the mean.Methods. Randomized digital recordings of sentences produced by speakers with idiopathic PD before and after the treatment were presented to normal-hearing listeners with equalized intensity at conversational loudness in the presence of pink noise. Percentage of words understood was calculated before and after the treatment. Changes in overall vocal intensity were also analyzed.Results. There was a statistically significant group effect from pre-to-post voice treatment; however, there was also significant interaction of treatment with speakers. Six of the speakers with PD improved significantly following voice treatment, one exhibited no change, and one exhibited a decline in sentence intelligibility post-treatment.Conclusions. LSVT yielded significant improvement in sentence intelligibility for most speakers in the study but was not beneficial for two of the speakers despite the fact that they increased their overall vocal loudness.