Accepted for Publication: October 5, 2020.
Published Online: October 26, 2020. doi:10.1001/jamacardio.2020.5890
Corresponding Author: Aaron L. Baggish, MD, Cardiovascular Performance Program, Massachusetts General Hospital, 55 Fruit St, Yawkey Ste 5B, Boston, MA 02114 (abaggish@partners.org).
Author Contributions: Drs Baggish and Kim had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Concept and design: All authors.
Acquisition, analysis, or interpretation of data: Kim, Thompson.
Drafting of the manuscript: Kim, Phelan, Martinez.
Critical revision of the manuscript for important intellectual content: Kim, Levine, Emery, Martinez, Chung, Thompson, Baggish.
Administrative, technical, or material support: Kim, Emery.
Supervision: Kim, Levine, Emery, Chung, Baggish.
Conflict of Interest Disclosures: Dr Kim reported receiving research funding for the study of athletes in competitive sports from the National Institute of Health/National Heart, Lung, and Blood Institute, compensation for his role as team cardiologist from the Atlanta Falcons (in the National Football League), and research stipends from the Atlanta Track Club. Dr Levine reported receiving compensation for his role as a consultant cardiologist for USA Track and Field and the US Olympic Committee. Dr Thompson reported receiving research funding to his institution from Sanofi, Regeneron, Esperion, Amarin, and Amgen; receiving consultation fees or speaker honoraria from Amgen, Amarin, Kowa, Regeneron, Sanofi, Esperion, Kowa, and Boehringer Ingelheim; and owning stock in AbbVie, Abbott Labs, CVS, General Electric, J&J, Medtronic, Sarepta, Boston Scientific, Myokardia, and Moderna. Dr Martinez reported receiving compensation for his role as league cardiology consultant for Major League Soccer outside the submitted work. Dr Baggish reported receiving research funding for the study of athletes in competitive sports from the National Institute of Health/National Heart, Lung, and Blood Institute, the National Football Players Association, and the American Heart Association and compensation for his role as team cardiologist from the US Olympic Committee/US Olympic Training Centers, US Soccer, US Rowing, the New England Patriots, the Boston Bruins, the New England Revolution, and Harvard University. No other disclosures were reported.