Text and Data Mining valid from 2020-03-20
Received: 8 October 2019
Accepted: 19 February 2020
First Online: 20 March 2020
Ethics Approval and Consent to Participate
: The study received the approval of the Medical Commissions from Maratón de Culiacan, Gran Maratón Pacifico, Mazatlán, and Guadalajara International Marathon. All participants provided written informed consent. The study followed the ethical standards for sport and exercise science research, as described in Harriss DJ, Macsween A, Atkinson G. Standards for ethics in sport and exercise science research: 2018 update. Int J Sports Med. 2017;38(14):1126-31.
: Not applicable
: The authors, Miguel A. Rivera, Thomas D. Fahey, Juan R. López-Taylor, and Juan L. Martínez, declare that they have no competing interests.