---
title: Assess expiratory respiratory muscle strength
nct_id: NCT07308795
status: RECRUITING
sponsor: Istanbul Physical Medicine Rehabilitation Training and Research Hospital
study_type: OBSERVATIONAL
canonical_url: "https://parkinsonspathways.com/trial/NCT07308795"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT07308795"
last_fetched: "2026-05-10T14:05:50.416Z"
source: "Parkinson's Pathways (curated)"
---
# Assess expiratory respiratory muscle strength

**Goal (in five words):** Assess expiratory respiratory muscle strength

**Official 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

**Trial ID:** [NCT07308795](https://clinicaltrials.gov/study/NCT07308795)

## Key Facts

- **Status:** RECRUITING
- **Study Type:** OBSERVATIONAL
- **Sponsor:** Istanbul Physical Medicine Rehabilitation Training and Research Hospital
- **Target Enrollment:** 36 participants
- **Start Date:** 2025-12-29
- **Completion Date:** 2026-02-28
- **Conditions:** Parkinson Disease (PD), Maximum Inspiratory Pressure, Maximum Expiratory Pressure, Abdominal Accessory Respiratory Muscle Thickness

## Summary For Families

The goal is to find out whether thinner abdominal accessory breathing muscles, seen on ultrasound, are linked to worse Parkinson's severity and to weaker inhaling and exhaling pressures. The team uses noninvasive ultrasound to measure those muscle thicknesses and standard mouth-pressure tests called maximum inspiratory pressure and maximum expiratory pressure to see if muscle loss matches lower breathing strength, which could help flag respiratory problems earlier and guide breathing-focused care. Adults 18 to 75 with Parkinson's at Hoehn and Yahr stages 1,3, MMSE over 23, and BMI under 30 can join, while active smokers, people with active chest disease or unstable vitals, those whose Parkinson's is not controlled with medication, and Parkinson-plus syndromes are excluded.

## Eligibility

- **Minimum age:** 18 Years
- **Maximum age:** 75 Years
- **Sex:** ALL

### Full Criteria

```
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
```

## Locations (1)

- İstanbul Fizik Tedavi Ve Rehabilitasyon Eğitim Ve Araştirma Hastanesi, Istanbul, BAHÇELİEVLER, Turkey (Türkiye) _(41.0138, 28.9497)_
  - İSTANBUL FİZİK TEDAVİ VE REHABİLİTASYON EAH İSTANBUL FİZİK TEDAVİ VE REHABİLİTASYON EAH — (CONTACT) — 0(212) 496 50 00 — istanbulfth2@saglik.gov.tr

## Central Contacts

- AYŞE NUR SARIKOÇ — (CONTACT) — +905412105141 — aysenuryigit885@gmail.com

---

*Canonical: https://parkinsonspathways.com/trial/NCT07308795*  
*HTML version: https://parkinsonspathways.com/trial/NCT07308795*  
*Source data: https://clinicaltrials.gov/study/NCT07308795*