![Feasibility and Costs of Monitoring Physical Activity in Young Children Using the Caltrac Accelerometer]()
Feasibility and Costs of Monitoring Physical Activity in Young Children Using the Caltrac AccelerometerEllison, R. Curtis; Freedson, Patty S.; Zevallos, Juan C.; White, Mary Jo; Marmor, Jaci K.; Garrahie, Ellen J.; Moore, Lynn L. · Pediatric Exercise Science · 1992