Kelly Louise A, Reilly John J, Jackson Diane M, Montgomery Colette, Grant Stanley, Paton James Y
Dept. Of Preventive Medicine, The University of Southern California, Los Angeles, CA 90033, USA.
Pediatr Exerc Sci. 2007 Feb;19(1):51-60. doi: 10.1123/pes.19.1.51.
Tracking of total physical activity (PA), moderate to vigorous activity (MVPA), and sedentary behavior was assessed in 42 young children (mean age at baseline 3.8 years) over a 2-year period using the Actigraph accelerometer. Tracking was analyzed using Spearman rank correlations, percentage agreements, and kappa statistics. Spearman rank correlations were r = .35 (p = .002) for total PA, r = .37 (p = .002) for MVPA, and r = .35 (p = .002) for sedentary behavior. Percentage agreements for PA, MVPA, and sedentary behavior were 38, 41, and 26 respectively. Kappa statistics for PA, MVPA, and sedentary behavior ranged from poor to fair. Results suggest low levels of tracking of total physical activity, MVPA, and sedentary behavior in young Scottish children over a 2-year period.
使用Actigraph加速度计，在42名幼儿（基线平均年龄3.8岁）的两年时间里，对总身体活动（PA）、中度至剧烈活动（MVPA）和久坐行为进行了跟踪评估。使用斯皮尔曼等级相关性、百分比一致性和kappa统计量对跟踪情况进行了分析。总PA的斯皮尔曼等级相关性为r = 0.35（p = 0.002），MVPA为r = 0.37（p = 0.002），久坐行为为r = 0.35（p = 0.002）。PA、MVPA和久坐行为的百分比一致性分别为38%、41%和26%。PA、MVPA和久坐行为的kappa统计量从差到一般。结果表明，在两年时间里，苏格兰幼儿的总身体活动、MVPA和久坐行为的跟踪水平较低。
