DuRant R H, Baranowski T, Puhl J, Rhodes T, Davis H, Greaves K A, Thompson W O
Med Sci Sports Exerc. 1993 Dec;25(12):1415-21.
We describe the daily activity patterns and the between-day and -year reliabilities of the Children's Activity Rating Scale (CARS) measured in 180 Anglo-, African-, and Mexican-American children aged 3 or 4 yr. Reliabilities were assessed at up to 11 measurement periods over 3 yr. CARS scores were measured by two trained observers (alternating 2-h shifts) up to 12 working hours. There were no significant ethnic or day of week differences in the activity levels. Males had higher mean activity levels than females and higher activity was performed in the summer and fall than the spring or winter. The all-measurements reliability for a mean of 5.34 d of observation over the 3 yr of measurement was 0.57. The reliability across all days and years of measurement was 0.73. The highest level of reliability (0.75) was found for the percent of minutes spent at CARS levels 3, 4, or 5 followed by an intraclass correlation of 0.74 for percent of minutes spent at CARS levels 4 or 5. These data support the utility of using the CARS as a measure of physical activity in younger children from different ethnic groups.
我们描述了180名3岁或4岁的英裔、非裔和墨西哥裔美国儿童的日常活动模式，以及儿童活动量表（CARS）在日间和年度之间的信度。在3年时间里，我们在多达11个测量时段对信度进行了评估。CARS分数由两名经过培训的观察员（交替进行2小时轮班）测量，最长测量12个工作小时。活动水平在种族或一周中的日期方面没有显著差异。男性的平均活动水平高于女性，夏季和秋季的活动量高于春季或冬季。在3年测量期间，平均观察5.34天的所有测量的信度为0.57。所有测量日和年份的信度为0.73。在CARS水平3、4或5所花费分钟数的百分比方面，发现了最高的信度水平（0.75），其次是在CARS水平4或5所花费分钟数的百分比的组内相关系数为0.74。这些数据支持将CARS用作不同种族年幼儿童身体活动测量方法的实用性。
