10～12岁正常体重儿童能量代谢的研究

Study on energy metabolism of ten-twelve years old children

目的 测定 10～ 12岁正常体重儿童的能量代谢。方法 对正常体重儿童进行基础代谢、休息代谢以及能量摄入量和全日总能量消耗的测定。结果 10～ 12岁正常体重儿童的基础代谢能量消耗为 (2 12 6 3± 2 0 5 4 )kJ/h ,休息代谢能量消耗为 (2 2 7 2 7± 2 3 5 2 )kJ/h ;基础代谢能量消耗实测值与用Schofield公式计算的结果没有显著性差异 ;男女童基础代谢与身高、体重、体表面积、体质指数、瘦体重、体脂肪呈显著正相关 ;10～ 12岁正常体重儿童每日能量需要量估计值为 8977kJ/d。结论 10～ 12岁正常体重儿童的基础代谢和休息代谢能量消耗分别为 (2 12 6 3± 2 0 5 4 )和(2 2 7 2 7± 2 3 5 2 )kJ/h ;Schofield公式仍然适合于计算我国 10～ 12岁儿童的基础代谢能量消耗 ;10～ 12岁正常体重儿童每日能量需要量估计值为 8977kJ/d。

Objective To measure energy metabolism of ten-twelve years old children.Methods Basic metabolic rate,resting metabolic rate were measured by using open-circuit indirect calorimetry.Total energy expenditure was estimated by time record of activities and factorial approach.Dietary intake was surveyed by weighing method.Results Basic metabolic rate and resting metabolic rate were (212.63±20.54 ) kJ/h and (227.27±23.52) kJ/h respectively.There was no significant difference between the value of measured basic metabolic rate and the value of predicted basic metabolic rate derived from Schofield equation.BMR was positively correlated with height,weight,body surface area,BMI,LBM and body fat.The estimated value of energy requirement in ten-twelve old children was 8977 kJ/d.Conclusion Basic metabolic rate and resting metabolic rate were (212.63±20.54) kJ/h and (227.27±23.52) kJ/h respectively of ten-twelve years old children.Schofield equation was suitable for predicting BMR in Chinese ten-twelve years old children.The estimated value of energy requirement in ten-twelve old children was 8977 kJ/d.