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Updated: Feb 26, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
Published on: August 24, 2019
Bronchial or Laryngeal Obstruction Induced by Exercise?
Ayoub Bey1, Sophie Botti1, Laurianne Coutier-Marie2
1Service d'ORL pédiatrique, Hôpital d'enfants, CHRU de Nancy, Vandoeuvre, France.
This study shows that respiratory resistance (Rrs) can help diagnose exercise-induced laryngeal obstruction in children. Increased Rrs after exercise indicates laryngeal dysfunction, even when breathing appears normal.
Area of Science:
- Pediatric Pulmonology
- Respiratory Physiology
Background:
- Exercise-induced laryngeal obstruction (EILO) and asthma are common in children.
- Diagnosing EILO often requires laryngoscopy, which may not always be available.
Observation:
- During laryngoscopy and after exercise challenge, inspiratory laryngeal adduction was visualized.
- This correlated with a sharp increase in respiratory resistance (Rrs) upon exercise cessation.
Findings:
- Respiratory resistance (Rrs) patterns during inspiration mirrored laryngeal adduction.
- This pattern reoccurred after deep breaths or swallowing, even during apparent normal recovery breathing.
Implications:
- Respiratory resistance (Rrs) measurement can aid in diagnosing exercise-induced laryngeal obstruction in children.
- This method may identify triggers for laryngeal dysfunction, offering an alternative when laryngoscopy is unavailable.
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