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Measuring breathing muscles with ultrasound

Researchers compare abdominal breathing-muscle thickness, breathing-out strength and disease severity in people with Parkinson’s.

Learning by observing or collecting information · Study reference: NCT07308795

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

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Looking for volunteers

Start (reported actual date)
2025-12-29
Main measurements finished (planned)
2026-02-28
Study finished (planned)
2026-04-20

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

No results summary has been confirmed in the registry records we imported. See connected papers below; we keep checking after recruitment ends.

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 18 years to 75 years · Also accepts healthy volunteers

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: all

Inclusion Criteria: * Age \> 18 years * Parkinson's disease diagnosis with Modified Hoehn and Yahr stages 1-2-3 * Mini-Mental State Examination (MMSE) score \> 23 * Body Mass Index (BMI) \< 30 Exclusion Criteria: * Active smokers * Individuals with a diagnosis of active chest disease * Those with hemodynamic instability * Individuals with unstable vital signs * Parkinson's patients who cannot be controlled with medical treatment * Parkinson Plus syndromes
Full study name & original research details

Official study title

The Ultrasonographic Evaluation of Abdominal Accessory Respiratory Muscle Thickness in Patients With Parkinson's Disease: Correlation With Disease Severity and Expiratory Respiratory Muscle Strength

Original description

Parkinson's disease is a neurodegenerative disorder characterized by both motor and non-motor symptoms. The involvement of respiratory muscles can lead to impairments in respiratory function in these patients. In this study is to evaluate the thickness of abdominal accessory respiratory muscles using ultrasonography in patients with Parkinson's disease. Additionally, the relationship between disease severity and expiratory respiratory muscle strength will be examined. The study will include Parkinson's patients at different stages of the disease, with respiratory muscle thickness measured via ultrasonography. The collected data will then be compared with disease severity and expiratory muscle strength.

Further description from the registry

Parkinson's disease is a neurodegenerative disorder characterized by both motor and non-motor symptoms. The involvement of respiratory muscles can lead to impairments in respiratory function in these patients. This observational, cross sectional study will include Parkinson's patients at different stages of the disease, with respiratory muscle thickness measured via ultrasonography. The collected data will then be compared with disease severity and expiratory muscle strength. In this study is to evaluate the thickness of abdominal accessory respiratory muscles (rectus abdominis, transversus abdominis, and oblique muscles) using ultrasonography in patients with Parkinson's disease. Additionally, the relationship between disease severity and expiratory respiratory muscle strength will be examined. Respiratory muscle strength will be assessed using maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) measurements. Disease severity will be evaluated using standardized clinical scales. These findings will underscore the importance of evaluating respiratory muscles in Parkinson's disease and may contribute to the development of rehabilitation programs targeting respiratory muscles in the later stages of the disease.

Conditions reported: Parkinson Disease (PD); Maximum Inspiratory Pressure; Maximum Expiratory Pressure; Abdominal Accessory Respiratory Muscle Thickness

Registry records for this study

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

Study type
Observational
Interventions
Not reported
Phases
Not reported
Sponsor
Istanbul Physical Medicine Rehabilitation Training and Research Hospital
Start date reported by registry
2025-12-29 (actual)

Registry updated: 2026-01-02 · Status last verified by the registry submitter: 2025-12

Registry records retrieved 2026-10-13 (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.

AYŞE NUR SARIKOÇ · +905412105141 · aysenuryigit885@gmail.com

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.

İstanbul Fizik Tedavi Ve Rehabilitasyon Eğitim Ve Araştirma Hastanesi

Istanbul, BAHÇELİEVLER, Turkey (Türkiye)

Recruiting

İSTANBUL FİZİK TEDAVİ VE REHABİLİTASYON EAH İSTANBUL FİZİK TEDAVİ VE REHABİLİTASYON EAH · 0(212) 496 50 00 · istanbulfth2@saglik.gov.tr

Facility not reported

Turkey (Türkiye)

Status not reported

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