TODAY | February 02, 2013
>> thanks. some people saying, hey, this was bound to happen. the death of an extreme sports competitor. unfortunately, it did happen this week at the x-games. it is raising a question again -- are these extreme athletes going too far in the name of entertainment? that story from michelle franzen .
>> reporter: in the world of extremes, caleb moore was living his dream. the action sports athlete was a rising star in the x-games. defying gravity with his fearless moves as a freestyle snowmobile rider. the 25-year-old won four x-games medals in his short career. but on january 24 , an accident during competition in aspen left caleb injured on the course.
>> they said it was a fluke.
>> reporter: denver post "' writer jason blevins was there.
>> got up, he was unconscious, and they treated him. he walked to the batallions.
>> reporter: one week later, caleb died from complications from the crash. he is the first athlete to die during competition in the 18-year history of the x-games, produced by espn. in a statement, the network offered its condolences. "we are deeply saddened by caleb moore 's passing, and our thoughts and prayers go out to his parents." the sports network underscored its commitment to ensure athletes' safety. "as a result of this accident, we will conduct a thorough review of this discipline and adopt any appropriate changes to future x games ." extreme sports has grown in popularity over the years as athletes push the envelope, striving to master new tricks.
>> there is no going backwards. we don't see tricks leveling off. every year the craziest things are happening.
>> reporter: last january, four-time x games gold medalist champion freestyle skier and super pipe pioneer sarah burke , died after a training accident.
>> reporter: and in 2007 , skateboarder jake brown , known as the comeback kid , after sustaining injuries from his crash at the summer x games . despite the accidents and moore 's death, experts say the daredevil sports are here to stay as athletes court fame, fans, and flirt with disaster.
>> these guys are going bigger and bigger. and when you push yourself like that and pushing each other like that, that's when things go wrong eventually.
>> reporter: for "today," michelle franzen , nbc news, new york.