R Khadgawat1, R K Marwaha, N Tandon, N Mehan, A D Upadhyay, A Sastry, K Bhadra. 1. All India Institute of Medical Sciences, New Delhi; *Institute of Nuclear Medicine and Allied Sciences, Delhi; SUR Medical College, Delhi. *Both, RK and RKM should be considered as joint first authors for this study Correspondence to: Maj Gen RK Marwaha, Gautam Apartments, Gautam Nagar, New Delhi 110 049. marwaha_ramank@hotmail.com.
Abstract
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 included 1640 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.
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 included 1640 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.
Authors: Avery A Thompson; Rachel L Duckham; Mayur M Desai; Courtney C Choy; Lauren B Sherar; Take Naseri; Christina Soti-Ulberg; Muagatutia S Reupena; Abigail I Wetzel; Nicola L Hawley Journal: Pediatr Obes Date: 2020-01-10 Impact factor: 4.000
Authors: Loveline L Niba; Paul B Itor; Yemele K Sibelle Aurelie; Foba M Singam; Emmanuel A Tange; Mary B Atanga; Lifoter K Navti Journal: J Nutr Metab Date: 2019-02-03
Authors: Anoohya Gandham; David Scott; Maxine P Bonham; Bharati Kulkarni; Sanjay Kinra; Peter R Ebeling; Ayse Zengin Journal: Calcif Tissue Int Date: 2022-05-04 Impact factor: 4.000