Institute of Human Performance, University of Hong Kong, Hong Kong, China.
JPEN J Parenter Enteral Nutr. 2009 Nov-Dec;33(6):640-5. doi: 10.1177/0148607109336603. Epub 2009 Aug 12.
The role that the components of energy expenditure play in the etiology of childhood obesity has highlighted the need for greater accuracy and standardized protocols for the measurement of resting energy expenditure (REE). However, protocols used to assess REE in children are varied, and consensus on a suitable method for measuring REE in children has not been reached. This study was undertaken to determine the effect of measurement time and measurement device (mask or mouthpiece) on REE in healthy children.
Following a 12-hour fast and abstinence from exercise, 23 children (age, 7-12 years) completed two 35-minute protocols: one with a face mask and the other with a mouthpiece/noseclip. Energy expenditure was measured continuously via indirect calorimetry, while device acceptability was assessed using a 6-point comfort rating scale.
Repeated measures ANOVA indicated that there was no significant difference in REE when measured after 10, 15, 20, or 25 minutes of rest compared to 30 minutes for either the mask or mouthpiece/noseclip (REE range, 1371-1460 kcal/d). Examination of the percentage coefficient of varia tion (CV) in energy expenditure for each time period by device showed that the least variation existed after 20 minutes of measurement using the mask (CV 6%). Paired t test analysis indicated significantly less discomfort when wearing the mask compared to the mouthpiece/noseclip.
It would appear that a 20-minute protocol using a mask may increase compliance and prove to be a more practical protocol for measuring REE in children.
能量消耗的组成部分在儿童肥胖病因学中的作用强调了需要更准确和标准化的协议来测量静息能量消耗（REE）。然而，用于评估儿童 REE 的协议各不相同，并且尚未就适合测量儿童 REE 的方法达成共识。本研究旨在确定测量时间和测量设备（面罩或咬嘴）对健康儿童 REE 的影响。
在 12 小时禁食和避免运动后，23 名儿童（年龄 7-12 岁）完成了两个 35 分钟的方案：一个使用面罩，另一个使用咬嘴/鼻塞。通过间接测热法连续测量能量消耗，同时使用 6 分舒适度评分量表评估设备的可接受性。
重复测量方差分析表明，与面罩或咬嘴/鼻塞的 30 分钟相比，在休息 10、15、20 或 25 分钟后测量时，REE 没有显着差异（REE 范围为 1371-1460 kcal/d）。通过设备检查每个时间段能量消耗的百分比变异系数（CV）发现，使用面罩测量 20 分钟后的变化最小（CV 为 6%）。配对 t 检验分析表明，与咬嘴/鼻塞相比，佩戴面罩时的不适感明显减轻。
使用面罩的 20 分钟协议似乎可以提高依从性，并被证明是一种更实用的测量儿童 REE 的方法。
