中国成人基础代谢率的交叉效度研究和重新评价（.doc

中国成人基础代谢率的交叉效度研究和重新评价( 李可基 屈宁宁 北京大学第三医院运动医学研究所，北京100083 摘要: 目的 比较基础代谢率（BMR）的种族差异和气候影响，对常用BMR预测公式应用于中国人群的效度进行评价。方法 收集国内外华裔人群的BMR检测数据，对实测结果进行综合统计，并与公式预测值进行比较和分析。结果 各公式预测值与实测值均有良好的相关性（P0.01），平均误差5%。多数情况下，各公式的预测值在南方偏高，在北方偏低。Liu公式的预测误差与体重和身高负相关（P0.01）， Henry公式的预测误差与各参数均无显著相关（P0.05）。结论 现有数据不支持中国人与白种人的BMR有人种差异，南方地区人群的BMR有偏低的趋势。综合比较，Henry公式的预测值更接近中国成人实测值。 关键词: 基础代谢 种族 气候 交叉效度 CROSS-VALIDATION FOR MEASURED AND PREDICTED BASAL METABOLIC RATE IN CHINESE ADULTS LI Ke-ji, QU Ning-ning Institute of Sports Medicine, Peking University 3rd Hospital, Beijing 100083, CHINA Abstract: Objective To estimate the validation of BMR predictive equations applied in Chinese population and to analyze racial and climatic influence on BMR. Methods BMR data tested in Chinese were collect and combined for re-analysis. These measured BMR were compared with the prediction of commonly used equations. Results The prediction of adopted equations was well associated with measured values (P0.05), and the average bias was less than 5%. In most of cases, the 3 equations predicted lower BMRs in southern populations and higher BMRs in northern populations. The predicted bias of Liu-equation was negatively correlated with weight and height (P0.01), as the predicted bias of Henry-equation was significantly correlated with neither variables (P0.05). Conclusion Present data dose not support the existence of racial BMR difference between Chinese and Caucasian. BMR in southern population tended to be lower. Comprehensively, the prediction of Henry-equation was closer to measured BMR in Chinese adult population. Key words: BMR race cross-validation 中国人的基础代谢率（BMR）是否低于白种人一直有争议。与从白种人数据推导出的公式预测值对比，华裔学者和早年的西方学者认为中国人的BMR低于白种人[1~6]。但是Henry则否认存在这种差异[7]，其分析结果中中国人的BMR实测值低于预测值3.9%（女）或7.6%（男），而作者简单地将这种差别归因于中国人处于热带地区的地域影响。由于既往的分析多是基于各个独立的小样本数据，在分析BMR的各种影响因素时，难于避免例数少和抽样误差所带来的偏倚。同时由于过去的研究者未能区分中国本身的地域差别，可以使不同气候地区人群的BMR差异被误解为种族间的差异；也可以使不同种族人群间BMR的差异被误解为地区间的差异。所以，对中国人与白种人之间是否存在BMR的差异尚不能完全定论。有鉴于