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Speech changes occur in the early stages of Parkinson\u2019s disease (PD) and cause communication difficulties, leading to social isolation. Lee Silverman voice treatment (LSVT) is a speech therapy approach designed to improve patients\u2019 language and voice capabilities. Objective. The effectiveness of the LSVT was compared with that of other speech interventions or no treatment to evaluate PD patients with dysarthria. Design. Systematic review with meta-analysis of randomized trials. Data Sources: PubMed, Embase, Cochrane Library, CNKI, and SinoMed library were searched from inception to December 2021 related to PD and LSVT. Method. Abstracts were screened and reviewed against the eligibility criteria (intervention group participants were PD assessed based on LSVT (LSVT Loud) and randomized control). Result. Ten randomized controlled trials were identified on speech symptoms in patients with PD. Compared with the respiratory therapy (RET) exercise, or no training group, a significant improvement was detected in the sound press level (SPL) after immediate treatment during the reading of vowel and rainbow passages and an increase in semitone standard deviation (STSD). Furthermore, the LSVT training significantly increased the participants\u2019 scores on unified Parkinson\u2019s disease rating scale (UPDRS-III) and speech intelligibility. Conclusion. This meta-analysis demonstrated the efficacy of LSVT in increasing vocal loudness and functional communication among individuals with PD. However, most studies included participants with mild-moderate PD. Thus, additional randomized controlled trials (RCTs) with large sample sizes are needed to validate the efficacy of LSVT in patients with different progressions of PD, including severe PD.<\/jats:p>","DOI":"10.1155\/2021\/3366870","type":"journal-article","created":{"date-parts":[[2021,12,27]],"date-time":"2021-12-27T12:51:18Z","timestamp":1640609478000},"page":"1-10","source":"Crossref","is-referenced-by-count":36,"title":["Lee Silverman Voice Treatment to Improve Speech in Parkinson\u2019s Disease: A Systemic Review and Meta-Analysis"],"prefix":"10.1155","volume":"2021","author":[{"given":"Tingting","family":"Pu","sequence":"first","affiliation":[{"name":"School of Pharmacy, Dali University, Yunnan 671000, Dali, China"},{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Physiology, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangyu","family":"Kong","sequence":"additional","affiliation":[{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meng","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangling","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xixi","family":"Feng","sequence":"additional","affiliation":[{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Changyou","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2601-4227","authenticated-orcid":true,"given":"Xiechuan","family":"Weng","sequence":"additional","affiliation":[{"name":"Beijing Institute of Basic Medical Sciences, Beijing 100850, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9984-2854","authenticated-orcid":true,"given":"Fan","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Public Health, Chengdu Medical College, Sichuan 610500, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1002\/mds.28215"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arr.2014.01.004"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.2007.131045"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1121\/1.4978342"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-020-68754-0"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1016\/j.csl.2021.101286"},{"issue":"5","key":"7","first-page":"1","article-title":"Correlation between head tremble and the severity of Parkinson\u2019s disease","volume":"17","author":"J. 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