ArticleJournal of speech, language, and hearing research : JSLHR2019
Reference Values for Healthy Swallowing Across the Range From Thin to Extremely Thick Liquids.
Article in Journal of speech, language, and hearing research : JSLHR, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04537650 (The Pathophysiology of Swallowing Impairment in People Recovering From COVID-19), which is not on this map. Cited by 107 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The Pathophysiology of Swallowing Impairment in People Recovering From COVID-19
Who cites it
107 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- The Impact of Nasogastric Tubes (NGTs) on Swallow Function in Adults with Post-stroke Dysphagia: A Systematic Review.Dysphagia · 2026Pooled it
- ESSD-ESGAR best practice position statements on the technical performance of videofluoroscopic swallowing studies in adult patients with swallowing disorders.European radiology · 2025Guideline
- Effectiveness of Interventions for Dysphagia in Parkinson Disease: A Systematic Review.American journal of speech-language pathology · 2022Pooled it
- Pooled it
- Does What I Say Matter? The Influence of Verbal Instruction and Delivery Method on Bolus Size.Dysphagia · 2026Trial
- Effects of Puree Type and Color on Ratings of Pharyngeal Residue, Penetration, and Aspiration during FEES: A Prospective Study of 37 Dysphagic Outpatient Adults.Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP) · 2025Trial
- Pharyngo-Esophageal Modulatory Swallow Responses to Bolus Volume and Viscosity Across Time.The Laryngoscope · 2022Trial
- Article
- The Influence of Liquid Consistency and Food Texture on Swallowing: A Systematic Review Update.Dysphagia · 2026Review
- Swallowing After Open Partial Horizontal Laryngectomy Type IIa: A Quantitative Videofluoroscopic Analysis Using the Analysis of Swallowing, Physiology, Events, Kinematics, and Timing.Journal of speech, language, and hearing research : JSLHR · 2026Article
- Accuracy of Visual Inspection of Thickened Liquids: Implications for Multidisciplinary Dysphagia Management and Clinical Nutrition.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2026Article
- Demographic Factors in Pharyngoesophageal Segment Size: A Scoping Review.Laryngoscope investigative otolaryngology · 2026Review
- Observational
- Thin Liquid Sip Sizes in Outpatient Adults with Normal and Disordered Swallowing: Modifying Factors and Relationships with Swallowing Safety and Efficiency.Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP) · 2026Article
- What About Foods? The Influence of Food Texture on the Safety, Timing, Kinematics, and Efficiency of Pharyngeal Phase Swallowing in Healthy Adults.Journal of speech, language, and hearing research : JSLHR · 2026Article
- Profiling the Swallowing Safety and Efficiency of Patients Presenting With Congestive Heart Failure.Laryngoscope investigative otolaryngology · 2026Article
- Leveraging Ensemble on Self-Supervised Techniques to Enhance Model Performance: A Regime Analysis.Journal of imaging informatics in medicine · 2026Article
- Swallow Strength and Skill Training with biofeedback In acute Post stroke dysphagia (ssSIP): a protocol for a multi-centre feasibility trial.Pilot and feasibility studies · 2026Article
- Does Inclusion of Thickened Liquids in a Modified Barium Swallow Study (MBSS) Protocol Affect DIGEST Grades?Dysphagia · 2026Article
- Palpation as a Method To Predict Spatial Instrumental Hyolaryngeal Excursion Measures.Dysphagia · 2026Article
47 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
Abstract
Purpose Thickened liquids are frequently used as an intervention for dysphagia, but gaps persist in our understanding of variations in swallowing behavior based on incremental thickening of liquids. The goal of this study was to establish reference values for measures of bolus flow and swallowing physiology in healthy adults across the continuum from thin to extremely thick liquids. Method A sex-balanced sample of 38 healthy adults underwent videofluoroscopy and swallowed 20% weight-to-volume concentration barium prepared in thin and slightly, mildly, moderately, and extremely thick consistencies using a xanthan gum thickener. Participants took comfortable sips and swallowed without a cue; sip volume was measured based on presip and postsip cup weights. A standard operating procedure (the ASPEKT method: Analysis of Swallowing Physiology: Events, Kinematics and Timing) was used to analyze videofluoroscopy recordings. Results The results clarify that, for thin liquid sips (10-14 ml), a single swallow without clearing swallows is typical and is characterized by complete laryngeal vestibule closure, complete pharyngeal constriction, and minimal postswallow residue. Aspiration was not seen, and penetration was extremely rare. Bolus position at swallow onset was variable, extending as low as the pyriform sinuses in 37% of cases. With thicker liquids, no changes in event sequencing, laryngeal vestibule closure, pharyngeal constriction, or postswallow residue were seen. The odds of penetration were significantly reduced. A longer timing interval until onset of the hyoid burst movement was seen, with an associated higher bolus position at swallow onset. Other timing measures remained unaffected by changes in bolus consistency. Conclusion The results include new reference data for swallowing in healthy adults across the range from thin to extremely thick liquids.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.