Physical Functions and Lifestyle Behaviours in Post-COVID-19 Syndrome Based on Circadian Rhythms
Recruiting now
Conditions studied: Post-COVID-19 Syndrome
In brief
Post-COVID-19 syndrome is associated with persistent symptoms such as fatigue, reduced physical activity, and impaired respiratory function. Circadian rhythm differences (chronotype) may influence lifestyle behaviors including physical activity, nutrition, and sleep patterns. This observational cross-sectional study aims to compare respiratory muscle strength, physical activity levels, and nutritional habits among individuals with post-COVID-19 syndrome according to their chronotype (morning, intermediate, and evening types). Additionally, genetic analysis of the CLOCK gene polymorphism will be performed to support objective evaluation of circadian rhythm differences. The findings of this study may help to better understand the role of circadian rhythm in post-COVID-19 syndrome and contribute to the development of individualized rehabilitation and lifestyle interventions.
Key facts
- Study ID
- NCT07545499
- Run by
- Hacettepe University
- People needed
- 50
- Starts
- 2025-05-22
- Expected to finish
- 2027-05-22
- Last updated by the study team
- 2026-04-22
Who can join
Age: 18 and older, up to 65. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Diagnosed with Post-COVID-19 Syndrome
- Aged between 18-65 years
- Able to read and understand Turkish
- Voluntary participation
- Classified as Post-Covid Functional Status Scale (PCFS) grade 2-3
- Clinically stable condition
- No uncontrolled comorbidities (e.g., hypertension, diabetes under control)
- No orthopedic or neurological conditions affecting exercise testing
You may not qualify if…
- Recent myocardial infarction or pulmonary embolism
- Severe uncontrolled chronic diseases
- Neurological or orthopedic conditions limiting mobility
- Psychiatric or neurological disorders affecting cooperation or test compliance
- Inability to complete assessments
Where it is running
- Hacettepe University Faculty of Physical Therapy and Rehabilitation — Ankara, Altindağ, Turkey (Türkiye) (enrolling)
Full record on ClinicalTrials.gov
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