Reilly John J, Kelly Louise A, Montgomery Colette, Jackson Diane M, Slater Christine, Grant Stan, Paton James Y
University of Glasgow, Division of Developmental Medicine, Yorkhill Hospitals, Glasgow, Scotland.
Int J Pediatr Obes. 2006;1(3):161-7. doi: 10.1080/17477160600845051.
To assess the validity of two equations based on the Actigraph CSA/MTI accelerometer for prediction of total energy expenditure (TEE).
The criterion was TEE measured using the doubly labeled water method in 85 children, mean age 4.6 years (SD 1.1), over 7 days in the pre-schoolers and 10 days in the school-age participants. Children wore the Actigraph concurrently during waking hours, for 3 of 7 days (pre-schoolers) or 7 of 10 days (school-age children). We tested two prediction equations based on accelerometry. Agreement between predicted and measured TEE was assessed using the 'Bland Altman' approach.
Mean TEE measured by doubly-labeled water was 5.8 MJ/d (SD 1.6). Mean error for the Ekelund equation was + 0.3 MJ/d (limits of agreement -3.7 to + 4.3), and for that of Puyau et al. was -0.3 MJ/d (limits of agreement + 3.2 to -3.8).
Simple approaches using the Actigraph appear to be inadequate for the estimation of free-living TEE in young children at present.
评估基于Actigraph CSA/MTI加速度计的两个方程对预测总能量消耗（TEE）的有效性。
标准是采用双标记水法测量85名儿童的TEE，这些儿童平均年龄4.6岁（标准差1.1），学龄前儿童测量7天，学龄儿童测量10天。儿童在清醒时间同时佩戴Actigraph，学龄前儿童为7天中的3天，学龄儿童为10天中的7天。我们测试了基于加速度测量的两个预测方程。使用“布兰德-奥特曼”方法评估预测的TEE与测量的TEE之间的一致性。
双标记水法测量的平均TEE为5.8兆焦/天（标准差1.6）。埃克隆德方程的平均误差为+0.3兆焦/天（一致性界限为-3.7至+4.3），普约等人的方程平均误差为-0.3兆焦/天（一致性界限为+3.2至-3.8）。
目前，使用Actigraph的简单方法似乎不足以估计幼儿的自由生活TEE。
