In a single peer-reviewed observational study, handgrip measurements in 102 adults with persistent post-COVID symptoms were associated with fatigue and symptom burden. Participants meeting chronic fatigue syndrome criteria showed weaker grip, greater fatigability and poorer recovery. The findings connect measured muscle performance with patients’ experience, while the selected cohort and absence of recovered controls limit their use as a diagnostic tool.
Adults meeting criteria for myalgic encephalomyelitis/chronic fatigue syndrome had lower average handgrip strength, greater fatigability and poorer recovery than the other participants with lasting post-COVID symptoms. A single peer-reviewed observational study linked these measured differences with questionnaires on fatigue, daily functioning and overall symptom burden.[1]
The team at the Technical University of Munich examined 102 adults recruited through social media and an outpatient service for post-COVID illness. Women formed most of the group, and symptoms had generally lasted more than a year. A digital dynamometer measured the dominant hand during repeated brief contractions, with short rests between squeezes and an hour of rest between sessions.[1]
The measurements distinguished maximum force, loss of strength during repeated squeezing and recovery in the later session. The analysis belonged to a wider observational project, without a separate advance sample-size calculation for the handgrip outcomes.[1]
Blood tests found subgroup associations involving inflammatory and vascular-lining markers. Researchers proposed vascular dysfunction as one possible explanation requiring further investigation. The selected single-center cohort had no recovered control group. Its associations establish neither a causal mechanism nor diagnostic accuracy for the wider population.[1]
