BMI和体脂%在判定大学生肥胖时的差异性研究

Differences Between BMI and Body Fat Ratio in Determination of Obesity in College Students

目的:认识BMI在判定肥胖时的误差。方法:采用体成分测试仪对石家庄学院在校的1270名大学生(男生488名,女生782名)进行了测试,体成分测试仪输出指标主要包括:体重、体脂肪量、肌肉量、BMI、体脂肪率、肌肉率、骨量、水分量、BMI判定结果、体脂肪率判定结果等。结果:BMI判定男大学生的肥胖率为9.84%(48人),体脂%判定男大学生的肥胖率为6.35%(31人);BMI判定女大学生的肥胖率为2.69%(21人),体脂%判定女大学生的肥胖率为21.61%(169人)。结论:BMI判断肥胖,只考虑到身高因素影响体重,并不能客观地反映体脂含量,在判定肥胖时有较大的误差。

[Purpose] To understand the error of BMI in the diagnosis of obesity. [Methods] Body composition of 1270 college students including 488 males and 782 females are tested by body composition tester （DF830） to get the values, which include weight, body fat volume, BMI, fat ratio, muscle ratio, bone volume, water content, etc. [Results] There are 48 males（9.84%） and 21 females（2.69%） can be determined obesity by BMI, while 31 males（6.35%） and 169 females（21.61%） by fat ratio.[ Conclusion] The use of BMI values to determine obesity is unscientific because of its concentration is not body fat but height and weight, it will produce more deviation.