title: Rebuttal from R. Matthew Brothers and Rong Zhang.
authors.affiliation: Department of Kinesiology, University of Texas at Arlington, Arlington, TX, USA.
authors.forename: R Matthew
authors.initials: RM
authors.lastname: Brothers
authors.affiliation: Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital, Dallas, TX, USA.|Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
authors.forename: Rong
authors.initials: R
authors.lastname: Zhang