King WC, Hsu JY, Courcoulas AP, Eid GM, Flum DR, Karr TM, Mitchell JE, Pender JR, Smith MD, Wolfe BM, Belle SH. Association of Physical Activity with Change in Weight and Percentage Body Fat Following Bariatric Surgery. Proceedings of American College of Sports Medicine; June 2011; Denver, CO. 2011 Jun.