Development of method for accurate measurement of energy expenditure in a short-time period with whole body indirect human calorimeter

为了在短时间内用全身间接人体热量计(HC)准确测量能量消耗(EE)，我们研制了一种模拟二氧化碳在HC中动态交换的输气装置。使用设备部件的目录精度来验证设备中注入的二氧化碳体积的准确性。反复的输气实验表明，有必要1)估算设备的实际CO2输入量(而不是目录的准确性)，2)调整设备的流量换算系数，3)开发操作简单的软件，将输液流量数据输入个人计算机。

For accurate measurement of energy expenditure (EE) in a short-time period with whole body indirect human calorimeter (HC), we developed a gas infusion equipment simulates CO2 pattern dynamically exchanges in the HC. Accuracy of CO2 volume infused with the equipment was validated using catalog accuracies of components of the equipment. Repeated gas infusion experiments suggested that the necessity of 1) the estimation of real (not the catalog accuracy) CO2 volume infused with the equipment, 2) the adjustment of flow rate conversion factor of the equipment, 3) the development of software for simple operation inputting the infusion flow rate data to personal computer.