title: [Cross-country skiing and changes in electrolytes].
mesh_terms: D000328:Adult; D006801:Humans; D008274:Magnesium / Q000097:blood; D008297:Male; D008875:Middle Aged; D010807:Physical Endurance; D011188:Potassium / Q000097:blood; D012865:Skiing; D012964:Sodium / Q000097:blood; D014882:Water-Electrolyte Balance
chemical_list: D012964:Sodium; D008274:Magnesium; D011188:Potassium
vernacular_title: Skilanglauf und Elektrolytveränderungen.