RT Journal Article SR Electronic T1 Changes in body mass alone explain almost all of the variance in the serum sodium concentrations during prolonged exercise. Has commercial influence impeded scientific endeavour? JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 475 OP 477 DO 10.1136/bjsm.2010.075697 VO 45 IS 6 A1 Noakes, Timothy David YR 2011 UL http://bjsm.bmj.com/content/45/6/475.abstract AB