Journal of Voice最新文献

{"title":"Analysis of Dye Distribution in Cadaveric Supraglottic Injections: Elucidating the Mechanism of Action for Supraglottic Botulinum Neurotoxin Injection.","authors":"Hyung-Jin Lee, In-Beom Kim, Bo Hae Kim, Ji-Hyun Lee","doi":"10.1016/j.jvoice.2026.04.016","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.04.016","url":null,"abstract":"<p><p>Supraglottic botulinum neurotoxin (BoNT) injections have been introduced as an alternative treatment for adductor spasmodic dysphonia (AdSD) to reduce adverse effects associated with direct intramuscular vocal fold injections. However, the anatomical distribution pattern of BoNT following supraglottic injection and the predominantly affected intrinsic laryngeal muscles have not yet been clearly elucidated, owing to a lack of detailed anatomical investigations. Thirteen fresh human cadavers (seven males and six females; mean age, 77.0 years) were included in this study. After harvesting the larynx, a supraglottic injection was performed under direct anatomical visualization using a blue dye as a tracer. Injection volumes of 0.4 mL and 0.2 mL were administered bilaterally. Following passive simulation of laryngeal adduction and abduction, specimens were frozen at -80 °C and sectioned coronally. Dye distribution was analyzed with a primary focus on the thyroarytenoid (TA) muscle complex, including the aryepiglottic muscle fibers, main TA muscle, vocalis muscle, and diffusion to other intrinsic laryngeal muscles. In all specimens, the dye remained confined to the supraglottic soft tissues, with no extension to the structures outside the larynx. At the muscular level, the dye involvement was limited to the TA muscle complex. The dye was consistently observed along the aryepiglottic muscle fibers and extended toward the main TA muscle. Partial intramuscular spread into the main TA muscle was identified in 50% of specimens in both injection volume groups (0.4 and 0.2 mL). Minimal extension into the vocalis muscle was observed in 33% of specimens. In contrast, no dye diffusion into the lateral cricoarytenoid, posterior cricoarytenoid, or interarytenoid muscles was observed in any of the specimens. Although the extent of dye spread varied according to injection volume, the pattern of muscle involvement was similar between the two groups. The mean distance from the supraglottic injection site to the TA muscle was 12.9 ± 1.7 mm. Supraglottic BoNT injections preferentially involve the thyroarytenoid muscle complex, with limited extension into the vocalis muscle and no diffusion into the other intrinsic laryngeal muscles. These anatomical findings provide a plausible explanation for the balance between therapeutic efficacy and tolerability reported with supraglottic BoNT injection in adductor spasmodic dysphonia and support its relative safety with respect to unintended muscle paralysis.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness and Safety of Platelet-Rich Plasma Injection for Vocal Fold Scar and Sulcus Vocalis: A Systematic Review and Meta-Analysis.","authors":"Rami Saade, Mia Harb, Dana Swaidan, Anna Karena Issa, Anita El Hajj, Georges Ziade","doi":"10.1016/j.jvoice.2026.04.010","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.04.010","url":null,"abstract":"<p><strong>Background: </strong>Platelet-rich plasma (PRP) has emerged as a regenerative therapy aimed at improving tissue healing and vocal fold function; however, clinical evidence remains limited. This systematic review and meta-analysis aim to evaluate the effectiveness and safety of PRP injection for the treatment of vocal fold scar and sulcus vocalis.</p><p><strong>Methods: </strong>PubMed, Scopus, and Web of Science were searched from inception until October 25, 2025, to identify studies evaluating PRP injection for vocal fold scar or sulcus vocalis. Outcomes included patient-reported voice disability, perceptual voice assessment, acoustic and functional measures, subjective improvement outcomes, and complications. Random-effects models were used to pool effect estimates. Risk of bias was assessed using study design-specific tools.</p><p><strong>Results: </strong>Nine studies comprising 353 patients were included. PRP injection was associated with a significant improvement in voice handicap index-10 scores (mean difference -6.74, 95% confidence interval -9.88 to -3.59), although substantial heterogeneity was observed (I² = 77.44%). Significant improvements were also observed in most GRBAS perceptual voice domains and vocal fatigue index scores. Cepstral spectral index of dysphonia scores improved significantly, whereas no significant changes were observed in jitter, fundamental frequency, or maximum phonation time. A substantial proportion of patients reported improvement in voice quality, ease of phonation, and stroboscopic findings following PRP injection. Reported complications were predominantly mild and transient. Overall evidence quality was limited by small sample sizes, heterogeneity in treatment protocols, and predominance of non-randomized studies.</p><p><strong>Conclusions: </strong>PRP injection for vocal fold scar and sulcus vocalis may be associated with improvements in patient-reported voice disability and perceptual voice quality, with a generally favorable safety profile. However, evidence for objective acoustic and functional outcomes remains inconsistent, and the overall quality of evidence is limited, precluding definitive conclusions. Further well-designed randomized trials are needed to establish an accurate efficacy and safety profile.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliability of Transcutaneous Laryngeal Ultrasonography Performed as Point-of-Care Ultrasound (POCUS) of the Larynx: A Preliminary Prospective Cohort Study.","authors":"Agastya Patel, Piotr Spychalski, Jarek Kobiela","doi":"10.1016/j.jvoice.2026.04.014","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.04.014","url":null,"abstract":"<p><strong>Background: </strong>Transcutaneous laryngeal ultrasonography is an emerging non-invasive method for assessing vocal fold function and has shown promise as a screening tool for vocal fold palsy. Existing evidence, however, is almost exclusively based on high-end conventional ultrasonography. With the increasing adoption of point-of-care ultrasonography (POCUS) devices across diverse clinical settings, understanding their reliability in transcutaneous laryngeal ultrasonography (TLUSG) is essential. To date, no study has directly compared POCUS and conventional ultrasonography for vocal fold visualization or diagnostic accuracy.</p><p><strong>Methods: </strong>In this prospective cohort study, six ultrasound-naïve medical students completed a structured TLUSG training program followed by supervised examinations of patients undergoing peri-thyroidectomy vocal fold assessment. Each patient underwent laryngoscopy performed by an otolaryngologist, followed by TLUSG using a handheld POCUS device (Butterfly iQ+) and a conventional ultrasonography (CUS) system (Mindray ME8). Vocal fold visualization rates and diagnostic accuracy metrics were calculated for both modalities, using laryngoscopy as the reference standard. Comparisons were performed using the McNemar test.</p><p><strong>Results: </strong>A total of 229 TLUSG examinations with each device were performed in 96 patients (mean age 48.05 ± 14.07 years). Vocal fold visualization rates were comparable between POCUS and CUS (94.3% vs 96.1%; P = 0.29). Sensitivity (58.3% vs 65.7%; P = 0.5), specificity (97.8% vs 98.4%), positive predictive value, and negative predictive value did not differ significantly between modalities. Sensitivity improved with operator experience, reaching 61.9%-72.2% with POCUS and 71.4%-77.8% with CUS in later examinations. Only six examinations showed discordant visualization outcomes between devices.</p><p><strong>Conclusion: </strong>Point-of-care ultrasonography demonstrates comparable vocal fold visualization rates and diagnostic performance to conventional ultrasonography for TLUSG, even when performed by novice operators. Given its affordability, portability, and accessibility, point-of-care ultrasound may meaningfully expand the clinical utility and implementation of TLUSG in perioperative and outpatient settings.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing Straw-Based Semi-Occluded Vocal Tract Exercises (SOVTEs): From Air Phonation to Water Resistance Therapy-A Scoping Review.","authors":"Ralph Haddad, Dario Ebode, Alexia Mattei, Estelle Bogdanski, Justin Michel, Stephane Gargula, Antoine Giovanni","doi":"10.1016/j.jvoice.2026.04.004","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.04.004","url":null,"abstract":"<p><strong>Objectives: </strong>Semi-Occluded Vocal Tract Exercises (SOVTEs) are fundamental in voice therapy, yet the mechanical and clinical distinctions between straw phonation in air and Water Resistance Therapy (WRT) remain insufficiently synthesized. This scoping review aims to map the literature on these two modalities, analyze their physiological principles, and compare their efficacy on acoustic, aerodynamic, and laryngeal outcomes.</p><p><strong>Methods: </strong>A systematic search was conducted in Medline and Cochrane databases up to September 2025, following PRISMA guidelines. Studies involving adults (healthy or dysphonic) using straw phonation (in air) or WRT (tube in water) were included. Data were extracted regarding physiological mechanisms, exercise parameters (diameter, length, water depth), and clinical effects.</p><p><strong>Results: </strong>Out of 1378 records, 107 studies were included. Straw phonation in air acts as a single-source system providing stable back pressure. It is highly effective at reducing mediolateral supraglottic compression and vocal fold impact stress, particularly with small-diameter straws (≤3 mm). WRT serves as a double-source system; water depth dictates hydrostatic pressure, while bubbling creates a pulsatile pressure (15-40 Hz), providing a \"massage-like effect.\" While WRT effectively lowers vibration amplitude and encourages respiratory conditioning, it may introduce vibratory irregularity. Direct comparisons suggest straw phonation is superior for immediate reduction of hyperfunctional patterns, whereas WRT (at varying depths) is highly adjustable for both recovery (shallow) and hypofunctional compensation (deep).</p><p><strong>Conclusions: </strong>Both techniques enhance vocal economy by optimizing the oral-to-subglottal pressure ratio, but they serve distinct clinical goals. Straw phonation in air is preferred for stabilizing hyperfunction, while WRT offers unique pulsatile tissue stimulation and adjustable resistance for respiratory drive. Clinical dosing - specifically straw diameter and water depth - is critical for therapeutic success.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fundamental Frequency, Voice Quality, Intensity, and Syllable Rate in Hebrew Child-Directed Speech: Acoustic Adaptations From Early to Middle Childhood.","authors":"Rachel-Tzofia Sinvani","doi":"10.1016/j.jvoice.2026.03.038","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.03.038","url":null,"abstract":"<p><p>Child-directed speech (CDS) prosodic modifications are well-documented in infancy, but their persistence into middle childhood remains understudied. To address this gap, this study examined developmental changes in acoustic properties of maternal Hebrew speech across early childhood (3-5 years, n = 65) and middle childhood (6-8 years, n = 61). Mothers were recorded playing with their children (CDS) and explaining the activity to an adult (adult-directed speech; ADS). Acoustic analyses measured fundamental frequency (f0), intensity, syllable rate, and voice quality (cepstral peak prominence; CPP). The results revealed significant CDS modifications in both age groups: mothers used breathier voice quality (lower CPP), higher rate, and reduced intensity compared with ADS. Critically, f0 elevation showed significant developmental attenuation: mothers used significantly higher mean f0 when addressing younger children (M = 213.60 Hz, standard deviation [SD] = 39.43) than older children (M = 196.05 Hz, SD = 38.97), whereas syllable rate, voice quality, and intensity modifications did not change significantly across child's age. These findings indicate that CDS remains a distinct register well into school age, characterized by a selective recalibration: while f0 undergoes developmental attenuation, other prosodic features show no significant changes. Future research should examine how these adjustments support the unique developmental requirements of this age group.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship between Mental and Vocal Health in Occupational Voice Users: A Systematic Literature Review.","authors":"Heather Marie Bingaman, Rachel Elaine Mauger, Lady Catherine Cantor-Cutiva","doi":"10.1016/j.jvoice.2026.03.039","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.03.039","url":null,"abstract":"<p><strong>Aims: </strong>Identify the trends in research related to bibliometric analysis and investigate the bidirectional impact of mental health concerns and vocal health issues.</p><p><strong>Methods: </strong>Systematic literature review following the Preferred Reporting Items for Systematic reviews and Meta-Analyses 2020 statement. Six computerized databases were searched independently by three authors through February 2025 using MESH terms. Bibliometric analysis was completed using VOSviewer software to analyze co-occurrence in key terms. We used the Quality Assessment Tool for Quantitative Studies to rate the methodological quality of each included publication.</p><p><strong>Results: </strong>In total, 181 records were retrieved. After removing duplicates, non-indexed manuscripts, and book chapters, 147 records were retained. Titles and abstracts were screened, and after applying the inclusion criteria, 49 publications were included for full-text review. After full-text screening, 20 manuscripts were retained for this systematic review. Among the included publications, 75% focused on school teachers, one on teachers, two on university teachers, and one on religious officials. The most common voice assessment tool was the Voice Handicap Index. Eleven publications reported anxiety as the mental health outcome, 50% reported stress, and 45% reported depression. Voice problems were often related to emotional factors. Teachers experiencing voice problems reported a lower quality of life, more stress, fatigue, and exhaustion, while those with an experienced or physiologic voice problem scored significantly lower on both physical and mental health scales compared to those without problems. Burnout syndrome was associated with the likelihood of having a voice disorder.</p><p><strong>Conclusion: </strong>This review highlights the intricate and reciprocal relationship between vocal and mental health among occupational voice users and teachers in particular. The findings underscore the need for interdisciplinary approaches that address both physical and psychological dimensions of occupational health. By integrating preventive strategies, clinical screening, and workplace interventions, stakeholders can promote well-being and sustainability in the teaching profession.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outcomes of Voice Therapy in Organic Voice Disorders: A Scoping Review-Part B.","authors":"Vanessa Veis Ribeiro, Franklin Júnior Dias Ferreira, Rebeca Vila Nova Torres, Kállita Souza Batista, Yago Bonfim Viana, Luiz Medeiros Araujo Lima-Filho, Jarrad Harrison Van Stan, Leonardo Wanderley Lopes","doi":"10.1016/j.jvoice.2026.03.018","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.03.018","url":null,"abstract":"<p><strong>Objective: </strong>To map the outcomes used to assess the effect of voice therapy in adults with organic voice disorders.</p><p><strong>Methods: </strong>This scoping review represents Part B of a broader review developed under a single registered protocol (Open Science Framework; doi: 10.17605/OSF.IO/YDGA8). While Part A addressed behavioral voice disorders, the present review focused exclusively on organic etiologies. Comprehensive searches were conducted in bibliographic databases and gray literature sources, complemented by backward and forward citation tracking. Studies were eligible if they included adults diagnosed with organic voice disorders who underwent voice therapy, with outcomes assessed within the scope of speech-language pathology. Data extraction covered publication characteristics, sample features, and assessment outcomes. Findings were synthesized using descriptive methods and summarized in tables and figures.</p><p><strong>Results: </strong>A total of 122 studies were included. Most publications occurred in the last decade and were predominantly conducted in the United States, with the Journal of Voice being the most frequent publication outlet. Sample sizes varied widely, and the mean reported age was 56.9 years. Parkinson's disease and vocal fold paralysis were the most frequently investigated conditions. Most studies included participants of both genders and focused on nonprofessional voice users. Vocal complaints and interviews or case histories were commonly reported. Acoustic analysis was the most frequently used assessment procedure, followed by self-assessment instruments, auditory-perceptual judgment, laryngeal imaging, and aerodynamic assessment.</p><p><strong>Conclusion: </strong>Outcomes used to assess the effects of voice therapy in adults with organic voice disorders primarily span acoustic, auditory-perceptual, self-assessment, laryngeal imaging, and aerodynamic domains. These outcomes reflect vocal characteristics associated with the underlying organic conditions and differ from those commonly reported in behavioral voice disorders, indicating alignment with disease-specific vocal manifestations.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acoustic Assumptions (AA): A Retrospective Study of an Approach to Optimizing Personal Resonance Goals in Gender-Affirming Voice Training.","authors":"Sandy Hirsch, Brett R Myers, Shaheen N Awan","doi":"10.1016/j.jvoice.2026.02.048","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.02.048","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to investigate the hypothesis that the Acoustic Assumptions (AA) approach is associated with acoustic, listener, and client-reported changes that align with the client's voice gender goals.</p><p><strong>Method: </strong>Pretherapy and post therapy samples of the vowels /a/, /i/, and /u/, the first three sentences of the Rainbow Passage, and self-perception questionnaires (Trans Woman Voice Questionnaire (TWVQ) and Voice-related Experiences of Nonbinary Individuals (VENI)) were analyzed for 15 transgender and gender-diverse (TGD) clients. In addition, speech-language pathology (SLP) students made blind, randomized ratings to measure gender perception of acoustic samples and to assess any perceptual change pre and post therapy.</p><p><strong>Results: </strong>Significant increases in post treatment F₀ and F2 were observed in vowels /i/, /a/, and /u/, coinciding with significant posttreatment increases in vowel space area (VSA) and significant decreases in estimated vocal tract length (VTL). Significant increases in F₀ and F2 in the vowel /a/ were also observed. Regression analyses showed that the treatment difference in (a) sustained vowel F₀ and F2 and (b) sustained vowel F₀ and F1 combined to significantly predict the treatment difference in listener-perceived femininity ratings in vowel contexts and sentence contexts, respectively, while treatment difference in sustained vowel F2 was observed to predict a treatment difference in the TWVQ self-rating.</p><p><strong>Conclusions: </strong>This study provides the first analysis of treatment outcomes using the AA approach to GAVT. AA is a systematic approach to resonance modification, and the current data show that it leads to significant changes in F₀ and vowel formants (particularly F2). For clients with feminizing goals, the approach is associated with a more feminine-sounding voice and more positive voice-related experiences in daily living. These findings suggest that AA may be a valuable gender-affirming approach to voice training.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147822988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Kinematic Chain in Hindustani Classical Singing: An Exploratory Bioacoustic Pilot Study of Seated Posture and Vocal Quality.","authors":"Manas Himanshu Vishwaroop","doi":"10.1016/j.jvoice.2026.04.005","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.04.005","url":null,"abstract":"<p><p>Seated posture (Asana) is an important part of Hindustani classical vocal pedagogy, yet its biomechanical function remains under-researched. This exploratory pilot study applies \"Kinematic Chain\" theory-where proximal stability dictates distal mobility-to investigate the link between pelvic alignment and vocal acoustics. Ten students (n = 10), beginner-to-intermediate level, learning in a university music college were recorded performing Aalap (slow Swara improvisation) and Sapat (fast ascending-descending variation in a set tempo) tasks. To address the challenge of masking by drone accompaniment (Tanpura &Tabla), raw audio was processed using the 'Demucs deep learning model' to isolate the vocal stem prior to analysis of Spectral Centroid and Vocal Efficiency. Subsequently, the pYIN (Probabilistic YIN) algorithm was deployed for fundamental frequency (F₀) estimation to objectively quantify performance efficiency through high-resolution pitch tracking. Descriptive analyses indicate that unstable postural bases are frequently associated with compensatory cervical protraction and reduced aerodynamic output. Intra-subject analysis revealed that correcting pelvic mechanics increased vocal efficiency by up to 38.5% (student 10) and Spectral Centroid by ∼171 Hz (student 7). Triangulation with participant feedback confirmed these findings: 70% of subjects identified mechanical anchoring (either via pelvic stabilization in Vajrasana or upper-body stabilization) as superior for breath control. These findings suggest that traditional stable postures, such as Vajrasana, function as a biomechanical optimization strategy to meet the specific acoustic and technical demands of Hindustani classical vocal performance.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147822957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Validation of the Iranian Voice Quality of Life Profile into Brazilian Portuguese.","authors":"Evelyn de Carvalho Caprini, Hoanna Victoria Caitano Menezes, Isadora Lopes Ramos, Maria Gabriella Gomes Fernandes, Emanuel Vianna Correia, Ana Raquel Alves da Silva, Rodrigo Dornelas, Ali Dehqan, Mara Behlau, Vanessa Veis Ribeiro","doi":"10.1016/j.jvoice.2026.03.040","DOIUrl":"https://doi.org/10.1016/j.jvoice.2026.03.040","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the psychometric properties of the Iranian Voice Quality of Life Profile (IVQLP) with Brazilian Portuguese (BP) speakers with voice complaints.</p><p><strong>Methods: </strong>Cross-sectional observational study. Participants were 219 BP-speaking adults, divided into two groups based on the presence of voice complaints. The participants completed the IVQLP in BP (IVQLP-Br), voice-related quality of life (V-RQOL), and voice handicap index-10 (VHI-10) questionnaires. The IVQLP-Br was reapplied. The psychometric properties evaluated were reliability (internal consistency and test-retest), construct validity (structural validity, convergent and known-groups validity by hypothesis testing), and criterion validity (concurrent validity and determination of cutoff points).</p><p><strong>Results: </strong>Structural validity confirmed the structure of 43 items and three factors, with a residual standardized root mean square of 0.095. The internal consistency ranged from 0.823 (physical) to 0.977 (total). The test-retest reliability ranged from 0.855 to 0.949. Convergent validity showed moderate to strong positive correlations between the IVQLP-Br and the VHI-10 (ρ = 0.63-0.76; P < 0.001). In the concurrent validity analysis, a negative correlation was found with V-RQOL (P < 0.001). Known-groups validity indicated significantly higher scores in the group with voice complaints (P < 0.001). The areas under the curve ranged from 0.800 to 0.907. The cutoff points were 7.5 points for the physical factor, 23.5 points for the emotional factor, 17.5 points for the functional factor, and 50.5 points for the total score, with greater sensitivity in the physical factor, greater specificity in the functional factor, and greater accuracy in the total score.</p><p><strong>Conclusion: </strong>The IVQLP-Br proved to be a valid and reliable tool for assessing voice-related quality of life in BP speakers.</p>","PeriodicalId":49954,"journal":{"name":"Journal of Voice","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147822975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}