Department of Communication Disorders, University of Massachusetts Amherst.
Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN.
Am J Speech Lang Pathol. 2022 Sep 7;31(5):1963-1978. doi: 10.1044/2022_AJSLP-22-00026. Epub 2022 Jul 19.
The purpose of the study was to examine the effect of two voice intervention approaches for hypophonia secondary to Parkinson's disease (PD) on self-reported measures of physical demand, mental demand, and vocal performance.
Thirty-four persons with hypophonia secondary to PD were assigned to one of three groups: Lee Silverman Voice Treatment (LSVT) LOUD ( = 12), SpeechVive ( = 12), and nontreatment clinical control ( = 10). The LSVT LOUD and the SpeechVive participants received 8 weeks of voice intervention following the standardized protocol previously described for each approach. To confirm the effectiveness of each voice intervention, sound pressure level (dB SPL) data were analyzed for the experimental and control participants for a monologue sample obtained pretreatment, midtreatment, and posttreatment. During the voice intervention period, the LSVT LOUD and the SpeechVive participants were instructed to complete a modified version of the National Aeronautics and Space Administration Task Load Index rating scale to indicate the mental and physical demand required to complete the intervention activities, and to indicate how well they performed in completing the assigned vocal tasks.
The LSVT LOUD and the SpeechVive participants demonstrated a significant posttreatment increase in SPL (dB), in comparison to the clinical controls, thus confirming a positive intervention effect. The LSVT LOUD participants reported significantly higher ratings of physical and mental demand over the course of treatment, in comparison to the SpeechVive participants.
Consideration of the mental and physical demand associated with two voice intervention approaches, commonly used for PD, may help to foster improved therapeutic compliance and treatment outcomes.
本研究旨在探讨两种针对帕金森病（PD）继发低语音的语音干预方法对自我报告的身体需求、精神需求和语音表现的影响。
34 名继发于 PD 的低语音患者被分配到以下三组之一：Lee Silverman 嗓音治疗（LSVT）大声（= 12）、SpeechVive（= 12）和无治疗临床对照组（= 10）。LSVT LOUD 和 SpeechVive 组的参与者接受了 8 周的语音干预，采用了之前为每种方法制定的标准化方案。为了确认每种语音干预的有效性，对实验组和对照组的参与者进行了独白样本的声压级（dB SPL）数据分析，样本采集于治疗前、治疗中期和治疗后。在语音干预期间，LSVT LOUD 和 SpeechVive 组的参与者被要求完成经修改的美国国家航空航天局任务负荷指数评分量表，以表明完成干预活动所需的精神和身体需求，并表明他们在完成指定的发声任务时的表现如何。
LSVT LOUD 和 SpeechVive 组的 SPL（dB）在治疗后显著增加，与临床对照组相比，这证实了积极的干预效果。LSVT LOUD 组参与者在治疗过程中报告的身体和精神需求明显高于 SpeechVive 组。
考虑到两种常用于 PD 的语音干预方法的精神和身体需求，可能有助于提高治疗依从性和治疗效果。
