CHANHASSEN, Minn.--(BUSINESS WIRE)--Life Time Fitness, Inc., The Healthy Way of Life Company, today announced the completion of its acquisition by an investor group led by affiliates of Leonard Green & Partners and TPG. The execution of a definitive merger agreement outlining the terms of the transaction was initially announced on March 16, 2015. Other key investors include LNK Partners and Life Time Chairman, President and Chief Executive Officer, Bahram Akradi. Life Time’s shareholders ap