Without explicitly referencing the topic of the former Olympic champion's "20/20" interview airing Friday night, Bruce Jenner said in an excerpt released Thursday by ABC, "I want to know how this story ends. You know? How does my story end?"

Saying, "It's going to be an emotional roller coaster, but somehow I'm going to get through it," Jenner, 65 -- who became an American athletics icon after winning the decathlon gold medal at the 1976 Summer Olympics in Montreal -- did not directly address widespread reports that the two-hour interview with ABC News' Diane Sawyer would focus on Jenner's transition to womanhood. The ex-husband of reality TV star Kris Jenner, the father of six children from three wives, and the stepfather of TV's four Kardashian siblings, Jenner said the family "are the only ones I'm concerned with," adding, "I can't let myself hurt them."

advertisement | advertise on newsday

ABC has been tight-lipped about the contents of the interview, shot over a day each in Los Angeles and New York in February. "In producing this special, one of our goals has been to respect Bruce's story," ABC News spokesman Van Scott told The Associated Press. "We want Bruce to speak for Bruce. We've had this top of mind throughout the process from the booking and interviews to the promotion and final product."

StoryBruce Jenner's strange trip from Olympics to ABC

Nick Adams, program director of transgender media for GLAAD, told the AP that "sharing one's story is something a person should be allowed to do in their own time and in their own way."

Sawyer, who has not previously spoken with outside media about the interview, is scheduled to promote it Friday on three ABC series: "Good Morning America," "Live with Kelly and Michael" and "The View."

Over the past several months, Jenner has begun wearing shoulder-length hair and affecting a feminized appearance. Jenner was photographed in December wearing two diamond earring studs and a French manicure. Us Weekly said in October Jenner had been photographed with bright red fingernails.