Assessing Preschool Children's Physical Activity: The Observational System for Recording Physical Activity in Children-Preschool Version
Research Quarterly For Exercise and Sport, Volume 77, Issue 2, 2006, pages 167-176.
Brown, W. H., Pfeiffer, K. A., McIver, K. L., Dowda, M., Almeida, M. J. C. A., & Pate, R. R. (2006). Assessing preschool children's physical activity: The observational system for recording physical activity in children-preschool version. Research Quarterly for Exercise and Sport, 77(2), 167-176.
© Research Quarterly for Exercise and Sport, 2006, American Alliance for Health, Physical Education, Recreation and Dance