BMI z-score is the optimal measure of annual adiposity change in elementary school children

Inokuchi, Mikako; Matsuo, Nobutake; Takayama, John I.; Hasegawa, Tomonobu

doi:10.3109/03014460.2011.620625

Cited by 60 publications

(53 citation statements)

References 8 publications

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“…There were studies suggested BMI-Z to be a more reliable parameter [19], which was calculated according to the median and the standard deviation of age-and sex-specific reference values. Besides, with consideration of the effect of the normal growth and development of children and adolescents, BMI-Z score could better monitor the body fat percentage of the school-age children [20]. The intervention school had significant (P < 0.05) changes between baseline and postintervention values for BMI-Z and there was a nonsignificant trend for a decline for BMI-P.…”

Section: Discussionmentioning

confidence: 98%

Intervention of childhood and adolescents obesity in Shantou city

Guo

Zeng

Zhuang³

et al. 2015

Obesity Research & Clinical Practice

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Section: Discussionmentioning

confidence: 98%

Intervention of childhood and adolescents obesity in Shantou city

Guo

Zeng

Zhuang³

et al. 2015

Obesity Research & Clinical Practice

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“…When we directly compared how change in %FM, a measure of relative FM that is complementary to percentage lean mass, correlated with change in all 3 indicators at the same time, we found that change in %FM was most strongly associated with change in BMIZ, particularly among AGA and LGA infants. These findings suggest that, as with older children (40,41), prospective change in BMIZ is an ideal surrogate indicator for adiposity accrual during the first 5 mo of life.…”

Section: Associations Between Change In Derived Indicators and Adp-mementioning

confidence: 94%

An observational cohort study of weight- and length-derived anthropometric indicators with body composition at birth and 5 mo: the Healthy Start study

Perng

Ringham

Glueck

et al. 2017

The American Journal of Clinical Nutrition

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Background: Despite widespread use of weight-and length-based anthropometric indexes as proxies for adiposity, little is known regarding the extent to which they correspond with fat mass (FM) or fat-free mass (FFM) during infancy. Objective: This study aimed to examine associations of 3 derived indicators-weight-for-age z score (WFAZ), weight-for-length score (WFLZ), and body mass index z score (BMIZ)-with FM, percentage of FM, and FFM measured by air-displacement plethysmography during the first 5 mo of life. Design: Applying prospectively collected data from 1027 infants in a Colorado prebirth cohort, we used multivariate regression to evaluate associations between the derived indicators and body composition at birth and at 5 mo, and with change (D) during follow-up. Results: At birth, all 3 derived indicators were more strongly associated with FFM than with FM. Each unit of WFAZ corresponded with 0.342 kg FFM (95% CI: 0.331, 0.351 kg FFM), compared with 0.121 kg FM (95% CI: 0.114, 0.128 kg FM) (P , 0.0001); similar trends were observed for WFLZ and BMIZ. By 5 mo, WFLZ and BMIZ were more strongly associated with FM than with FFM, whereas WFAZ correlated similarly with the 2 components of body composition. DWFLZ and DBMIZ were both more strongly related to DFM than to DFFM; however, a direct comparison of the 2 indexes with respect to change in the percentage of FM indicated that DBMIZ was the optimal proxy of adiposity gain (P , 0.0001, pairwise difference). Conclusions: Weight-and length-based indexes are poor surrogates for newborn adiposity. However, at 5 mo, WFLZ and BMIZ are suitable proxies of FM. When assessing adiposity gain, DBMIZ is the best indicator of fat accrual during the first 5 postnatal months. This trial was registered at clinicaltrials.gov as NCT02273297.Am J Clin Nutr 2017;106:559-67.

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“…There is ongoing discussion regarding the optimal measure of adiposity in larger studies of children and adolescents. Some authors claim that BMI-for-age z-score (BMIz) is the best measure as it adjusts for the age and gender of the child7 while others claim that BMI most aptly represents a child's adiposity 8 9. BMI and BMIz are merely estimates of body fatness as these indices do not differentiate between the types of tissue that contribute to body weight (fat, muscle or bone mass).…”

Section: Introductionmentioning

confidence: 99%

Effects of a 20-month cluster randomised controlled school-based intervention trial on BMI of school-aged boys and girls: the HEIA study

et al. 2013

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BackgroundSchool-based interventions that target prevention of overweight and obesity in children have been tested with mixed results. Thus, successful interventions are still called for. The aim of the present study was to investigate effects of a multicomponent school-based intervention programme targeting physical activity, sedentary and dietary behaviours on anthropometric outcomes.MethodsA 20-month intervention was evaluated in a cluster randomised, controlled study of 1324 11-year-olds. Outcome variables were body mass index (BMI), BMI-for-age z-score (BMIz), waist circumference (WC), waist-to-height ratio (WTHR) and weight status (International Obesity Task Force's cut-offs). Weight, height and WC were measured objectively; pubertal status was self-reported and parental education was self-reported by the parents. Intervention effects were determined by one-way analysis of covariance and logistic regression, after checking for clustering effects of school, and moderating effects of gender, pubertal status and parental education.ResultsBeneficial effects were found for BMI (p=0.02) and BMIz (p=0.003) in girls, but not in boys. While a beneficial effect was found for BMI (p=0.03) in participants of parents reporting a high level of education, a negative effect was found for WTHR in participants with parents reporting a low level of education (p=0.003). There were no intervention effects for WC and weight status.ConclusionsA multicomponent 20-month school-based intervention had a beneficial effect on BMI and BMIz in adolescent girls, but not in boys. Furthermore, children of higher educated parents seemed to benefit more from the intervention, and this needs attention in future interventions to avoid further increase in social inequalities in overweight and obesity.

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BMI z-score is the optimal measure of annual adiposity change in elementary school children

Abstract: The BMI z-score is the optimal measure of annual adiposity change for elementary school children.

Cited by 60 publications

References 8 publications

Intervention of childhood and adolescents obesity in Shantou city

Intervention of childhood and adolescents obesity in Shantou city

An observational cohort study of weight- and length-derived anthropometric indicators with body composition at birth and 5 mo: the Healthy Start study

Effects of a 20-month cluster randomised controlled school-based intervention trial on BMI of school-aged boys and girls: the HEIA study

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