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Table 1 Characteristics of Study Participants

From: The relationship between obesity and body compositions with respect to the timing of puberty in Chongqing adolescents: a cross-sectional study

Indicators Boys (n = 782) Girls (n = 690)
Age (Mean ± SD)   11.72 ± 2.09 11.02 ± 2.66
School
  Urban school 421 333
  Village school 361 357
Grade
  Grade two - 203
  Grade three 109 102
  Grade four 225 -
  Grade seven 221 181
  Grade eight 227 204
Anthropometric
  Height (cm) 147.57 ± 13.84 142.37 ± 14.59
  Weight(kg) 41.81 ± 13.70 38.12 ± 13.72
  Triceps skinfold (mm) 6.60 ± 3.04 7.54 ± 3.29
  Subscapular skinfold (mm) 5.03 ± 3.22 5.86 ± 2.70
  Suprailiac skinfold (mm) 5.14 ± 3.28 7.72 ± 3.74
Body compositions
  BD(kg/L) 1.07 ± 0.01 1.06 ± 0.01
  %BF 12.51 ± 3.35 15.43 ± 4.44
  FM(kg) 5.49 ± 3.12 5.66 ± 3.40
  FFM(kg) 36.47 ± 11.13 32.74 ± 11.07
  1. BD: body density, %BF: percentage of body fat, FM: fat mass, FFM: fat-free mass, BMI: body mass index
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