Cheryl A Gibson , Bryan K Smith , Katrina D DuBose , J Leon Greene , Bruce W Bailey , Shannon L Williams , Joseph J Ryan , Kristin H Schmelzle , Richard A Washburn , Debra K Sullivan , Matthew S Mayo and Joseph E Donnelly
International Journal of Behavioral Nutrition and Physical Activity 2008, 5:36doi:10.1186/1479-5868-5-36