RELATED: Sexual-abuse victims of gymnastics doctor Nassar tell how he damaged their lives
Gymnastics doctor's victims relate impact of abuse
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President and CEO Kerry Perry said in a tweet, "We believe this step will allow us to more effectively move forward in implementing change within our organization."
USA Gym Board of Directors executive leadership: Chairman Paul Parilla, Vice Chairman Jay Binder and Treasurer Bitsy Kelley formally offered their resignations, effective Jan. 21.
RELATED: Larry Nassar was a 'master manipulator,' says Aly Raisman
The board of directors will identify an interim chairperson until a permanent selection is named.
The announcement comes while Nassar victims spoke for a fifth day at a Michigan court hearing. Nassar has sat in the witness chair as nearly 100 victim statements have been given by women and girls who say he sexually assaulted them under the guise of medical treatment.
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Nassar admitted to molesting athletes during treatment when he was employed by Michigan State University and USA Gymnastics, which trains Olympians.
He is expected to be sentenced this week.
Former President Steve Penny quit last March after critics said the organization failed to protect gymnasts from abusive coaches and Nassar.
The Associated Press contributed to this report.