Percentage body fat in apparently healthy school children from northern India

• Published in: Indian pediatrics Vol. 50; no. 9; pp. 859 - 866
• Main Authors: Khadgawat, R., Marwaha, R. K., Tandon, N., Mehan, N., Upadhyay, A. D., Sastry, A., Bhadra, K.
• Format: Journal Article
• Language: English
• Published: India Springer India 01-09-2013
• Subjects: Adipose Tissue - physiology; Adolescent; Body Composition - physiology; Body Mass Index; Child; Cross-Sectional Studies; Female; Humans; India - epidemiology; Male; Maternal and Child Health; Medicine; Medicine & Public Health; Obesity - epidemiology; Pediatric Surgery; Pediatrics; Reference Values; Research Paper; Students - statistics & numerical data; India; Obesity; Assessment values; Adolescents; Reference values; Percentage body fat; India
• ISSN: 0019-6061; 0974-7559
• DOI: 10.1007/s13312-013-0237-3

Context
Increased prevalence of obesity in childhood and adolescence, defined by the use of body mass index (BMI), has drawn attention towards direct measurement of body fat
Objective
To develop age-and sex-specific reference distribution of body fat in apparently healthy North-Indian children in the age group of 7–17 years and to assess agreement between obesity (defined by BMI) and excess body fat
Design
Study subjects for this cross sectional study included1640 apparently healthy school children (825 boys; 815 girls) aged 7–17 years. Total body fat was measured by dual energy X-rays absorptiometry (DXA). The excess body fat by DXA was defined by two methods, prevalence matching and with the use of 85th and 95th centile cutoffs.
Results
The mean ± SD, 3rd, 10th, 25th, 50th, 75th, 90th and 97th centile values of percentage body fat (PBF) are presented. PBF was highly correlated with BMI in both boys and girls (all boys: r=0.76,
P
<0.0001; all girls r=0.81,
P
<0.0001). There was no significant difference noted in PBF between boys and girls at the age of 7–8 years. From 9 years onwards, girls had significantly higher PBF than boys. Moderate degree of agreement was observed between BMI and PBF by DXA by both methods.
Conclusions
Smoothened reference distribution of PBF for North-Indian children and adolescents in Delhi are provided. Indian children accumulate more body fat during peri-pubertal years in comparison with US children.