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Carbonated drinks and swallowing

This study compares swallowing still and carbonated liquids in people with neurological conditions.

Testing a treatment or activity · Study reference: JPRN-UMIN000051163

Plain-language introduction written with AI from the registry; not independently checked by a clinician. Read the original details below ↓

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Results reported

Start (reported date)
2023-05-29
Study finished (reported date)
2028-03-31

Planned dates can move. A study finishing does not tell us when a paper will be published.

Read the results reported in the registry

Changes we have recorded
  • 2026-10-11 — recruiting

These are dates we observed a change, not necessarily the dates it happened.

Papers connected to this study

No connected paper has been found yet. The tracker checks the growing library for study identifiers and registry-linked publications.

Who can join?

Ages 20years-old to 90years-old · Ask the team who can join

These are starting points, not the full rules. The research team can tell you whether the study is right for your situation.

Read all the rules for taking part

Sex eligibility reported by registry: male and female

Inclusion criteria: 1) Patients with Parkinson's disease who have been judged in their medical care to require a contrast swallowing examination and who have received speech and language therapy between receipt of permission to carry out the study and 31 March 2028. 2) Patients aged between 20 and 90 years at the time of the examination and at the time the questionnaire is administered. Exclusion criteria: 1) Those diagnosed with dementia 2) Others deemed inappropriate by the principal investigator 3) Those who have withdrawn consent for the research.
Full study name & original research details

Official study title

Liquidity testing in carbonated beverages and their effect on improving swallowing function in neurodegenerative diseases. - Liquidity testing in carbonated beverages and their effect on improving swallowing function in neurodegenerative diseases.

Short title used by the registry

Liquidity testing in carbonated beverages and their effect on improving swallowing function in neurodegenerative diseases.

Original description

Intervention: Group A: 10 ml of barium solution dissolved in tap water was ingested first, followed by 10 ml of barium solution dissolved in soda water. Group B: 10 ml of barium solution dissolved in carbonated water was ingested first, followed by 10 ml of barium solution dissolved in tap water. Primary outcome: Viscosity testing: Line Spread Test (LST) method, syringe method, viscometer. VF result findings: VF moving image rating scale, PA scale. Secondary outcome: DHI-J, SDQ-J, EAT-10, survey on preferences

Conditions reported: Parkinson's disease

Registry records for this study

Records are joined using registration identifiers. Titles alone do not establish that two studies are the same.

Study type
Interventional
Interventions
Group A: 10 ml of barium solution dissolved in tap water was ingested first, followed by 10 ml of barium solution dissolved in soda water. Group B: 10 ml of barium solution dissolved in carbonated water was ingested first, followed by 10 ml of barium solution dissolved in tap water.
Phases
Not applicable
Sponsor
National Center of Neurology and Psychiatry
Start date reported by registry
2023-05-29 (reported)

Registry updated: Not reported · Status last verified by the registry submitter: Not reported

Registry records retrieved 2026-10-11 (UTC). Individual records may have older updates. Recruitment and eligibility must be confirmed with the study team.

Contact the research team

Public study contacts supplied to the registry. Ask whether recruitment is still open and what participation involves.

Keigo Nakayama · 0423412711 · stnakayama@ncnp.go.jp

Study locations

Site status can differ from overall study status. “Status not reported” means local availability needs confirmation. Remote participation and travel arrangements must be checked with the team.

Facility not reported

Japan

Status not reported

The original descriptions and participation rules come from the registry. Participation is voluntary and does not guarantee benefit.