Mahar, Matthew T Effects of a classroom-based program on physical activity and on-task behavior. [electronic resource] - Medicine and science in sports and exercise Dec 2006 - 2086-94 p. digital Publication Type: Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0195-9131 Standard No.: 10.1249/01.mss.0000235359.16685.a3 doi Subjects--Topical Terms: AttentionChildChild BehaviorChild, PreschoolHumansMotor ActivityNorth CarolinaSchool Health ServicesWalking