Trends in BMI Percentile and Body Fat Percentage in Children 12 to 17 Years of Age

被引：10
作者：
Vehrs, Pat R. [1 ]
Fellingham, Gilbert W. [2 ]
McAferty, Angela [1 ]
Kelsey, Laurel [1 ]
机构：
[1] Brigham Young Univ, Dept Exercise Sci, Provo, UT 84602 USA
[2] Brigham Young Univ, Dept Stat, Provo, UT 84602 USA
来源：
CHILDREN-BASEL | 2022年 / 9卷 / 05期
关键词：
percent body fat; body mass index; fat mass index; fat-free mass index; obesity; X-RAY ABSORPTIOMETRY; MASS INDEX; US CHILDREN; CHILDHOOD OBESITY; UNITED-STATES; ADOLESCENTS; PREVALENCE; OVERWEIGHT; FATNESS; HEALTH;
D O I：
10.3390/children9050744
中图分类号：
R72 [儿科学];
学科分类号：
100202 ;
摘要：
This study evaluates the cross-sectional trends in body fat percentage (BF%) and body mass index (BMI) percentile rank, and the relationship between the two in 332 (177 boys, 155 girls) 12- to 17-year-old children. Body mass index (BMI) was calculated using measured height and body mass, and sex-specific BMI for age percentile rank was determined using CDC growth charts. Body fat percentage (BF%) was measured with DEXA. Fat mass index (FMI) and fat-free mass index (FFMI) were calculated by normalizing the fat mass and fat-free mass for height. Compared to boys of the same age, girls had significantly higher BF% and FMI values and lower FFMI values. Compared to boys, at a given BMI percentile rank, females had a higher BF% and FMI, and a lower FFMI. In both boys and girls, there was an exponential increase in adiposity above the 70th percentile rank. BMI percentile rank is not an equivalent indicator of body fatness in boys and girls. Other measures of body composition can further inform the practitioner of a child's adiposity.
引用
收藏
页数：10
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