title: Fluid and electrolyte balance during the comrades marathon.
mesh_terms: D000328:Adult; D001806:Blood Urea Nitrogen; D001831:Body Temperature; D002712:Chlorides / Q000097:blood; D003681:Dehydration; D006400:Hematocrit; D006801:Humans; D008297:Male; D008875:Middle Aged; D011188:Potassium / Q000097:blood; D012964:Sodium / Q000097:blood; D013177:Sports; D013546:Sweating; D014554:Urination; D014882:Water-Electrolyte Balance
chemical_list: D002712:Chlorides; D012964:Sodium; D011188:Potassium