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Voice Meets Swallowing: A Scoping Review of Therapeutic Connections
Journal article   Peer reviewed

Voice Meets Swallowing: A Scoping Review of Therapeutic Connections

Adrián Castillo-Allendes, Jeff Searl, José Vergara, Natalie Ballentine, Soud Ebdah, Anaïs Rameau and Eric J Hunter
American journal of speech-language pathology, Vol.34(2), pp.877-907
03/10/2025
DOI: 10.1044/2024_AJSLP-24-00194
PMCID: PMC11903005
PMID: 39772835
url
https://pmc.ncbi.nlm.nih.gov/articles/PMC11903005/pdf/AJSLP-34-877.pdfView
Open Access

Abstract

This scoping review aimed to explore the use of volitional voice tasks in assessing swallowing-related outcomes and to evaluate their therapeutic impact on swallowing disorders, including their effects on swallowing biomechanics. This scoping review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews guidelines. A literature search was performed across multiple databases (PubMed, Web of Science, and Scopus), and additional records were identified through manual searches. After screening and eligibility assessment, 36 studies were included for data extraction and analysis. The Effective Public Health Practice Project Quality Assessment Tool for Quantitative Studies was employed to evaluate the quality of the included studies. The review identified various volitional voice tasks, such as maximum phonation time and pitch glides, as potential assessment tools for predicting swallowing-related outcomes. Additionally, voice tasks targeting pitch modulation, increased vocal loudness, and squeezed voice quality showed promising therapeutic benefits for swallowing disorders across different populations, especially individuals with neurological conditions and head and neck cancer. While methodological limitations were found in current literature, volitional voice tasks demonstrate potential as complementary tools for assessing and treating swallowing disorders, leveraging their interconnected neurological and biomechanical mechanisms underlying functions. Further research with more robust methodologies is needed to establish the efficacy of these integrated interventions, facilitate their translation into clinical practice, and test new possibilities.

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