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.
Diagnosed with Post-COVID-19 Syndrome
Aged between 18-65 years
Able to read and understand Turkish
Voluntary participation
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