Evidence map›Paper›PMID 38969542›Full record

ArticleJournal of voice : official journal of the Voice Foundation2026

Effects of Back Pressure on the Feasibility and Tolerability of Laryngeal Diadochokinetic Exercise: A Pilot Study.

Christopher S Apfelbach, Mary Sandage, Katherine Verdolini Abbott

Abstract read
In one paragraph

Article in Journal of voice : official journal of the Voice Foundation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Christopher S ApfelbachDepartment of Communication Sciences and Disorders, University of Iowa, Iowa City, Iowa. Electronic address: christopher-apfelbach@uiowa.edu.
Mary SandageDepartment of Speech, Language & Hearing Sciences, Auburn University, Auburn, Alabama.
Katherine Verdolini AbbottDepartment of Communication Sciences and Disorders, University of Delaware, Newark, Delaware.

Funding

Validation of a novel vocal demand task for measuring vocal fatigueF31DC020362 · NIDCD · UNIVERSITY OF DELAWARE · PI APFELBACH, CHRISTOPHER SEAN · 2022 to 2023
$63k
NIDCD NIH HHS F31 DC020362
6 · The paper itself

Abstract

backgroundThe term vocal demand response refers to how speakers meet vocal demands. Vocal loading tasks with predetermined demand parameters (duration, pitch, loudness, etc) have been used in research to study the vocal demand response; these have historically consisted of loud sustained vowel and loud speech tasks. Tasks founded on laryngeal diadochokinesis (LDDK) may be viable alternatives, especially if demand parameters such as exercise-rest ratio and fluid back pressure are concurrently modulated.

objectivesTo explore the effects of four fluid back pressure conditions (0, 5, 10, and 15 cm H

methodsParticipants (n = 12) completed 15-minute trials of LDDK in 30-second rest and exercise intervals against four counterbalanced back pressure conditions: 0, 5, 10, and 15 cm H

resultsPerceived vocal exertion, lightheadedness, and subjective laryngeal diadochokinetic difficulty increased as back pressure increased. Number of intervals completed, auditory-perceptual diadochokinetic strength, and participant rankings of back pressure conditions, by contrast, decreased as back pressure increased. 0 and 5 cm H DISCUSSION: Fluid back pressure was feasible and broadly tolerated during 15-minute trials of vocal exercise. However, the transition from 5 → 10 cm H

Indexed as

LarynxPhonationSpeech AcousticsVoice QualityAdultBiomechanical PhenomenaFeasibility StudiesFemaleHumansJudgmentMalePilot ProjectsPressureTime FactorsYoung AdultLaryngeal diadochokinesisPerceived exertionSemiocclusionVocal demand responseVocal fatigueVocal loading

Identifiers

PMID38969542
PMCPMC11698956

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.