Associations between physical activity, mental health concerns, eating disorder symptoms, and emotional intelligence in adolescent athletes transitioning from COVID-19.

"Declarations Ethics approval and consent to participateThe study protocol and procedures were reviewed and approved by the Ethics Committee of Faculty of Medicine, Tarbiat Modarres University (approval #IR. MODARES. REC.1399.097) (study coordinating site) on October 10, 2020 before enrollment of any participant. All methods were performed in accordance with the Declaration of Helsinki. Participants were recruited via a study research coordinator who had contacted the respective officials of the 10 sports groups. The study procedures were explained, and informed consent was obtained from all participants and their parents prior to study initiation. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no relevant financial or non-financial interests to disclose. Competing interests The authors declare that they have no relevant financial or non-financial interests to disclose."

"Funding This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors."