Life Time Fitness, Inc. said Michael J. Gerend, president and chief operating officer, will leave the company. The change is expected to be effective May 1, 2009, subject to the finalization of a separation agreement.

“During his tenure, Mike played an instrumental role in building and expanding the strong leadership team we now have in place and, in turn, the growth and performance we have achieved,” said Bahram Akradi, Life Time Fitness chairman and CEO. “As he makes his transition from the company, I want to thank Mike for his six years of dedicated service and many contributions. Moving forward, the current executive team will assume the responsibilities he formerly held.”

Gerend joined Life Time Fitness in March 2003 after having served as president and chief executive officer of Champion Air. Prior to that, he held numerous senior management positions at Northwest Airlines, Inc.