Sharma Shreela, Chuang Ru-Jye, Skala Katherine, Atteberry Heather
Michael and Susan Dell Center for Healthy Living, The University of Texas School of Public Health, Houston, TX USA.
Meas Phys Educ Exerc Sci. 2011 Fall;15(4):257-273. doi: 10.1080/1091367X.2011.594361.
The purpose of this study is describe the initial feasibility, reliability, and validity of an instrument to measure physical activity in preschoolers using direct observation. The System for Observing Fitness Instruction Time for Preschoolers was developed and tested among 3- to 6-year-old children over fall 2008 for feasibility and reliability (Phase I, n=67) and in fall 2009 for concurrent validity (Phase II, n=27). Phase I showed that preschoolers spent >75% of their active time at preschool in light physical activity. The mean inter-observer agreements scores were ≥.75 for physical activity level and type. Correlation coefficients, measuring construct validity between the lesson context and physical activity types with and with the activity levels, were moderately strong. Phase II showed moderately strong correlations ranging from .50 to .54 between the System for Observing Fitness Instruction Time for Preschoolers and Actigraph accelerometers for physical activity levels. The System for Observing Fitness Instruction Time for Preschoolers shows promising initial results as a new method for measuring physical activity among preschoolers.
本研究的目的是描述一种通过直接观察来测量学龄前儿童身体活动的工具的初步可行性、可靠性和有效性。开发了学龄前儿童健身指导时间观察系统，并于2008年秋季在3至6岁儿童中进行了可行性和可靠性测试（第一阶段，n = 67），于2009年秋季进行了同时效度测试（第二阶段，n = 27）。第一阶段表明，学龄前儿童在幼儿园的活跃时间中，超过75%用于轻度身体活动。观察者间关于身体活动水平和类型的平均一致性得分≥0.75。测量课程背景与身体活动类型以及活动水平之间结构效度的相关系数中等强度。第二阶段表明，学龄前儿童健身指导时间观察系统与Actigraph加速度计在身体活动水平方面的相关性中等强度，范围从0.50到0.54。学龄前儿童健身指导时间观察系统作为一种测量学龄前儿童身体活动的新方法，显示出有前景的初步结果。
