Changes in A, plasma volume and B, plasma osmolality during the experiment. Values are means ± SEs. Abbreviations: LNa, carbohydrate-electrolyte drink containing 19.9 mmol/L sodium; HNa, carbohydrate-electrolyte drink containing 36.2 mmol/L sodium; PL, colored and flavored distilled water; W, mineral water. ^a Denotes difference compared with colored and flavored distilled water trial (P < .05). ^b Denotes difference compared with mineral water trial (P < .05). ^c Denotes difference compared with carbohydrate-electrolyte drink containing 19.9 mmol/L sodium (P < .05).