Why COVID-19 survivors struggle to breathe: new study probes muscle damage
NCT ID NCT04854863
First seen Jan 30, 2026 · Last updated Jun 19, 2026 · Updated 20 times
Summary
This completed study looked at breathing muscle strength in 50 people who were hospitalized for COVID-19. Half had been on a ventilator, and half needed only extra oxygen. Researchers used advanced tests, including nerve stimulation and ultrasound, to measure diaphragm function. The goal was to understand why some survivors feel tired and short of breath, and to guide future rehabilitation programs.
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Jens Spiesshoefer
Aachen, North Rhine-Westphalia, Germany
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 the need for specialized breathing muscle training in COVID-19 recovery programs.
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.
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.