Why COVID-19 survivors struggle to breathe: muscle damage revealed

NCT ID NCT04854863

Completed Knowledge-focused Sponsor: RWTH Aachen University Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at breathing muscle function in 50 people who were hospitalized for COVID-19. Half had been on a ventilator, half only needed extra oxygen. Researchers used advanced tests to measure diaphragm strength and movement. The goal was to understand why many survivors feel tired and short of breath, and to guide future rehabilitation programs.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If successful, this could show that dedicated breathing-muscle training helps COVID-19 survivors recover from fatigue and shortness of breath.
What could go wrong: This is a small, observational study with only 50 participants. It measures muscle function but does not test any treatment, so it cannot prove that rehabilitation works.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

COVID-19 injury

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

COVID19 DIAPHRAGM INJURY

Contacts and locations

Locations

Jens Spiesshoefer

Aachen, North Rhine-Westphalia, Germany

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