Effects of breathing exercises on recovery after stroke

Effect of Inspiratory Muscle Training on Respiratory Function, Diaphragm Thickness, Balance Control, Exercise Capacity and Quality of Life in People After Stroke: a Randomized Controlled Trial

NA · Hong Kong Metropolitan University · NCT06640101

This study tests whether a 4-week breathing exercise program can help stroke patients recover better by improving their breathing, balance, and overall quality of life.

Quick facts

PhaseNA
Study typeInterventional
Enrollment84 (estimated)
Ages40 Years to 80 Years
SexAll
SponsorHong Kong Metropolitan University (other)
Locations1 site (Shenzhen, None Selected)
Trial IDNCT06640101 on ClinicalTrials.gov

What this trial studies

This study investigates the impact of a 4-week inspiratory muscle training (IMT) program on various rehabilitation outcomes for stroke patients. Participants will engage in IMT at 50% of their maximum inspiratory pressure, with assessments focusing on respiratory function, diaphragm thickness, balance control, exercise capacity, and overall quality of life. The study also aims to understand how IMT influences the timing of muscle activation during postural tasks. Participants will be divided into groups receiving either sham IMT, stable surface IMT, unstable surface IMT, or conventional treatment.

Who should consider this trial

Good fit: Ideal candidates are individuals aged 40 to 80 who have experienced an ischemic or hemorrhagic stroke within the past 1 to 12 months.

Not a fit: Patients with acute cardiovascular issues or significant respiratory illnesses may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could enhance recovery and improve quality of life for stroke survivors.

How similar studies have performed: While the specific approach of inspiratory muscle training in stroke rehabilitation is less common, similar interventions have shown promise in improving respiratory and functional outcomes in other populations.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 40 years and \< 80 years;
* breathing spontaneously;
* clinically diagnosed with ischemic and/or haemorrhagic stroke;
* duration of stroke from onset falls within 1 month to 12 months after diagnosis;
* no thoracic or abdominal surgery within the last 6 months;
* able to understand and follow verbal instructions;
* no facial palsy, or mild facial palsy without limitation of labial occlusion;
* able to maintain a resting sitting posture without feet support for at least 30 seconds;
* no cognitive impairment (Montreal Cognitive Assessment (MoCA) score ≥ 26);
* able to independently walk at least 10 meters with or without an assistive device.

Exclusion Criteria:

* acute myocardial infarction or acute heart failure;
* acute pain in any part of the body;
* with respiratory illness or positive clinical signs of impaired respiratory function (such as shortness of breath, hypoxemia, chronic cough and sputum retention);
* with chronic cardiovascular dysfunction;
* Trunk Impairment Scale (TIS) score ≥ 20.
* patient with a nasal feeding tube, tracheal tube and/or any condition that prevents the measurement or the implementation of the study procedure.

Where this trial is running

Shenzhen, None Selected

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Stroke, Inspiratory muscle training, Diaphragm, Balance control, Exercise capacity, Quality of life, Anticipatory postural adjustment time

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.