Patterns and interrelationships of body-fat measures among rural Chinese children aged 6 to 18 years. 2007

Hongjian Wang, and Rachel E Story, and Scott A Venners, and Binyan Wang, and Jianhua Yang, and Zhiping Li, and Liuliu Wang, and Xue Liu, and Genfu Tang, and Houxun Xing, and Xiping Xu, and Xiaobin Wang
Mary Ann and J. Milburn Smith Child Health Research Program, Department of Pediatrics, Northwestern University Feinberg School of Medicine and Children's Memorial Hospital and Children's Memorial Research Center, Chicago, Illinois 60614, USA.

OBJECTIVE Our goal was to compare BMI and waist circumference with dual-energy radiograph absorptiometry-based measures of adiposity and to describe the pattern and interrelations of these surrogate and direct adiposity measures in prepubertal and pubertal rural Chinese children. METHODS This was a cross-sectional study of 2493 children aged 6 to 18 years from a population-based cohort of twin pairs. Dual-energy radiograph absorptiometry-based measurements included total body fat, percentage of body fat, trunk fat, and percentage of trunk fat. Age- and gender-specific patterns and interrelationships among BMI, waist circumference, and dual-energy radiograph absorptiometry-based measurements were described by using smoothing plots and age- and gender-specific correlation analyses. RESULTS In girls, BMI, waist circumference, total body fat, percentage of body fat, trunk fat, and percentage of trunk fat all increased linearly with age. In boys, BMI and waist circumference increased linearly with age, but total body fat, percentage of body fat, and trunk fat did not increase significantly with age. In both genders, percentage of trunk fat reached a nadir around 12 years of age and then increased with age. Before puberty (6-11 years), BMI and waist circumference were correlated well with total body fat, percentage of body fat, and trunk fat in both genders. During puberty (12-18 years), the correlations between BMI and each of the dual-energy radiograph absorptiometry-based measurements were higher in girls than in boys. Similar trends were found in the correlations between waist circumference and each of the dual-energy radiograph absorptiometry-based measurements. CONCLUSIONS In this relatively lean rural Chinese population, BMI and waist circumference were highly correlated with each other and were good surrogates of total body fat, trunk fat, and percentage of body fat in prepubertal children of both genders and in pubertal girls. However, both BMI and waist circumference overestimated total and trunk fat, especially percentage of body fat in pubertal boys.

UI MeSH Term Description Entries
D008297 Male Males
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002681 China A country spanning from central Asia to the Pacific Ocean. Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000886 Anthropometry The technique that deals with the measurement of the size, weight, and proportions of the human or other primate body.
D012424 Rural Population The inhabitants of rural areas or of small towns classified as rural. Rural Residence,Rural Communities,Rural Spatial Distribution,Communities, Rural,Community, Rural,Distribution, Rural Spatial,Distributions, Rural Spatial,Population, Rural,Populations, Rural,Residence, Rural,Rural Community,Rural Populations,Rural Residences,Rural Spatial Distributions
D012727 Sex Characteristics Those characteristics that distinguish one SEX from the other. The primary sex characteristics are the OVARIES and TESTES and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction. Gender Characteristics,Gender Differences,Gender Dimorphism,Sex Differences,Sex Dimorphism,Sexual Dichromatism,Sexual Dimorphism,Characteristic, Gender,Characteristic, Sex,Dichromatism, Sexual,Dichromatisms, Sexual,Difference, Sex,Dimorphism, Gender,Dimorphism, Sex,Dimorphism, Sexual,Gender Characteristic,Gender Difference,Gender Dimorphisms,Sex Characteristic,Sex Difference,Sex Dimorphisms,Sexual Dichromatisms,Sexual Dimorphisms
D015502 Absorptiometry, Photon A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION. Absorptiometry, X-Ray,Dual-Photon Absorptiometry,Photodensitometry, X-Ray,Photon Absorptiometry,Single-Photon Absorptiometry,X-Ray Absorptiometry,Absorptiometry, Dual X-Ray,Absorptiometry, Dual-Energy Radiographic,Absorptiometry, Dual-Energy X-Ray,DEXA Scan,DPX Absorptiometry,DXA Scan,Densitometry, X-Ray,Densitometry, Xray,Dual X-Ray Absorptiometry,Dual-Energy Radiographic Absorptiometry,Dual-Energy X-Ray Absorptiometry,Dual-Energy X-Ray Absorptiometry Scan,Radiographic Absorptiometry, Dual-Energy,X-Ray Absorptiometry, Dual-Energy,X-Ray Photodensitometry,Absorptiometries, DPX,Absorptiometry, DPX,Absorptiometry, Dual Energy Radiographic,Absorptiometry, Dual Energy X Ray,Absorptiometry, Dual X Ray,Absorptiometry, Dual-Photon,Absorptiometry, Single-Photon,Absorptiometry, X Ray,DEXA Scans,DXA Scans,Densitometry, X Ray,Dual Energy Radiographic Absorptiometry,Dual Energy X Ray Absorptiometry,Dual Energy X Ray Absorptiometry Scan,Dual Photon Absorptiometry,Dual X Ray Absorptiometry,Photodensitometry, X Ray,Radiographic Absorptiometry, Dual Energy,Scan, DEXA,Scan, DXA,Scans, DEXA,Scans, DXA,Single Photon Absorptiometry,X Ray Absorptiometry,X Ray Absorptiometry, Dual Energy,X Ray Photodensitometry,X-Ray Absorptiometry, Dual,X-Ray Densitometry,Xray Densitometry

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