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According to " American medicine annual report " and " American cardiovascular disease learns a magazine " the report says, treat one of sexual dysfunction medicaments 10 thousand what Ai Ke contains Xidena to be not composition to be able to be helpful for mountaineering lover enhances athletic staying power when low oxygen condition.

Be in university of German Ji Sen (in the experimentation of a research that Giessen) place belongs to hospital place to organize, 14 mountain-climbing athletes that take this medicaments and excurse lover add up to fall in two kinds of states accepted the body to detect: The Ji Sen hospital in low height above sea level is inspiratory gas of low oxygen sex; The Mount Everest that unplugs in Gao Hai shows camping ground take action.

University of German Ji Sen (after Giessen) place belongs to a hospital to undertake detecting to its body subsequently, if make conclusions,reach: Xidena is not the high pressure of pulmonary artery of low oxygen sex when can reducing static breath and motion, do not affect aeriform exchange and systematic circulation blood pressure at the same time, namely this medicaments can increase serious the athletic staying power when low oxygen. (Brightness young tiger)