Ongoing muscle problems and symptoms in long COVID over time

Declarations. Ethics approval and consent to participate: The study protocol was approved by the Ethics Committee of the Technical University of Munich, School of Medicine (Klinikum rechts der Isar; approval number 2022-317-S-SR). The study was conducted in accordance with the Declaration of Helsinki and all participants provided written informed consent prior to inclusion. Consent for publication: Not applicable. Competing interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.