Aerodynamic Demand Responses to the Fluid Interval Test for Voice: A Laryngeal Diadochokinetic Vocal Loading Task.
Introduction: Vocal loading tasks are useful for studying vocal demand responses—the unique sets of biomechanical, aerodynamic, and acoustic adaptations that speakers employ to meet the vocal demands of communication. We discuss aerodynamic demand responses to the Fluid Interval Test for Voice (FIT-...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 69; no. 5; pp. 1880 - 1902 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
May2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=193696194&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 193696194 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: May2026 vid: 69 iid: 5 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 193696194 10.1044/2025_JSLHR-25-00639 ppf: 1880 ppct: 22 formats: fmt: @attributes: type: P size: 2MB tig: atl: Aerodynamic Demand Responses to the Fluid Interval Test for Voice: A Laryngeal Diadochokinetic Vocal Loading Task. aug: au: Apfelbach, Christopher S. Sandage, Mary J. Abbott, Katherine Verdolini affil: Department of Speech-Language-Hearing Sciences, University of Minnesota, Minneapolis. Department of Speech, Language & Hearing Sciences, Auburn University, AL. Department of Communication Sciences & Disorders, University of Delaware, Newark. su: Delaware Task performance Universities & colleges Sound recordings College students Laryngeal physiology Physiological adaptation Research funding Data analysis Spirometry Aerodynamics Dynamics Respiration Two-way analysis of variance Fatigue (Physiology) Voice disorders Descriptive statistics Physiological aspects of speech Longitudinal method Crossover trials Experimental design Aerodynamic load Statistics Human voice Data analysis software Comparative studies Time Respiratory mechanics sug: subj: Task performance Universities & colleges Sound recordings College students Delaware Record Production Integrated Record Production/Distribution Sound recording merchant wholesalers Colleges, Universities, and Professional Schools Laryngeal physiology Physiological adaptation Research funding Data analysis Spirometry Aerodynamics Dynamics Respiration Two-way analysis of variance Fatigue (Physiology) Voice disorders Descriptive statistics Physiological aspects of speech Longitudinal method Crossover trials Experimental design Aerodynamic load Statistics Human voice Data analysis software Comparative studies Time Respiratory mechanics ab: Introduction: Vocal loading tasks are useful for studying vocal demand responses—the unique sets of biomechanical, aerodynamic, and acoustic adaptations that speakers employ to meet the vocal demands of communication. We discuss aerodynamic demand responses to the Fluid Interval Test for Voice (FIT-V), a vocal loading task founded on resisted laryngeal diadochokinesis (LDDK), to determine how aerodynamic factors may influence LDDK performance. Method: Participants (N = 30) produced loud abductory LDDK (/hʌ hʌ hʌ/) for 30 min, alternating 30-s intervals of exercise and rest. Depending on the task condition, fluid back pressure of 0 or 5 cm HO was imposed to modulate respiratory demand. Airflow data were captured continuously and analyzed using a twoway analysis of variance (Task × Time) to characterize aerodynamic adaptations in both LDDK pulses and whole breath grou ps. Results: Instantaneous LDDK rate did not change significantly within trials or intervals—unlike the aerodynamic variables, which exhibited task- and timedependent changes. Large increases in mean airflow and expiratory volume within trials were characteristic of the resisted FIT-V5 task, whereas the nonresisted FIT-V task exhibited declining mean airflow and expiratory volume. Irrespective of task, all breath groups grew shorter within trials, and all aerodynamic variables decreased dramatically within intervals. Conclusions: Voice users actively modulated their aerodynamic output at multiple levels throughout the FIT-V tasks, although it is unclear whether these modulations were responsible for participants’ ability to maintain rapid LDDK rates. Future work will examine how different vocal demand responses influence perceived fatigue, performance fatigability, and laryngeal pathology risk. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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