Body Composition and Geographical Altitude in Newborns From the Province of Jujuy (Argentina)

IF 1.7 4区医学 Q1 ANTHROPOLOGY

American Journal of Human Biology Pub Date : 2025-09-01 DOI:10.1002/ajhb.70130

Jorge I. Martínez, Marcelo I. Figueroa, Lautaro D. Andrade, Carlos Grandi, José E. Dipierri

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引用次数: 0

Abstract

Aim

Knowledge of neonatal body composition in high-altitude populations is insufficient. To estimate Fat Mass (FM), Fat Free Mass (FFM), and Body Fat percentage (BF%) in Jujuy newborns (NB) using the weight/length (W/L) ratio and its relationship with maternal, fetal, and environmental characteristics.

Method

Data were obtained from 47 598 mother/child pairs recorded in the Jujuy Perinatal Information System (SIP) between 2009 and 2014, including NB and maternal weight, length/height, gestational and maternal age, educational, nutritional, and marital status; birth interval; maternal surname, and planned pregnancy. The prevalence of unsatisfied basic needs (% UBN) was determined based on the mother's place of residence. The data were divided into two groups: highlands (HL > 2500 masl) and lowlands (LL < 2500 masl). W/L, FM, FFM, and BF% centiles were calculated using GAMLSS LMS in R and compared with INTERGROWTH-21st. ANOVA and Chi-squared tests were applied as needed. Statistical associations between the response variables FM, FFM, and BF% and maternal and environmental variables were tested using GAMM.

Results

FM and BF% were significantly higher in females and in LL, while the opposite was true for FFM. The three indicators differed according to maternal nutritional status and age, parity, pregnancy planning, prematurity, birth size, geographical altitude, surnames, and UBN. GAMM showed that gestational age, sex, birth size, UBN, and surnames are associated with FM, FFM, and BF% at both altitudinal levels.

Conclusions

The body composition of Jujuy NB varies with geographical altitude, NB characteristics, ethnicity, and socioeconomic conditions.

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阿根廷胡胡伊省新生儿身体成分与地理海拔的关系

目的对高海拔地区新生儿身体成分了解不足。利用体重/长度（W/L）比及其与母体、胎儿和环境特征的关系，估算枣枣新生儿（NB）的脂肪质量（FM）、无脂肪质量（FFM）和体脂率（BF%）。方法收集2009 - 2014年在Jujuy围产期信息系统（SIP）中记录的47598对母婴资料，包括新生儿和产妇体重、身高、胎龄和产妇年龄、文化程度、营养状况、婚姻状况等；出生间隔;母亲的姓氏，和计划怀孕。未满足基本需求的发生率（% UBN）是根据母亲的居住地来确定的。数据分为两组：高地（HL < 2500）和低地（LL < 2500）。利用GAMLSS LMS计算W/L、FM、FFM和BF%百分位数，并与intergrowth -21进行比较。根据需要采用方差分析和卡方检验。使用GAMM检验反应变量FM、FFM和BF%与母体和环境变量之间的统计相关性。结果女性和男性的FM和BF%显著高于男性，而男性的FM和BF%则相反。这三个指标根据产妇的营养状况和年龄、胎次、妊娠计划、早产、出生尺寸、地理海拔、姓氏和UBN而有所不同。GAMM结果显示，胎龄、性别、出生大小、UBN和姓氏与FM、FFM和BF%在两个海拔水平上都有相关性。结论小枣的身体组成因地理海拔、小枣特征、民族和社会经济条件的不同而不同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American Journal of Human Biology 生物-生物学

CiteScore

4.80

自引率

13.80%

发文量

124

审稿时长

4-8 weeks

期刊介绍： The American Journal of Human Biology is the Official Journal of the Human Biology Association. The American Journal of Human Biology is a bimonthly, peer-reviewed, internationally circulated journal that publishes reports of original research, theoretical articles and timely reviews, and brief communications in the interdisciplinary field of human biology. As the official journal of the Human Biology Association, the Journal also publishes abstracts of research presented at its annual scientific meeting and book reviews relevant to the field. The Journal seeks scholarly manuscripts that address all aspects of human biology, health, and disease, particularly those that stress comparative, developmental, ecological, or evolutionary perspectives. The transdisciplinary areas covered in the Journal include, but are not limited to, epidemiology, genetic variation, population biology and demography, physiology, anatomy, nutrition, growth and aging, physical performance, physical activity and fitness, ecology, and evolution, along with their interactions. The Journal publishes basic, applied, and methodologically oriented research from all areas, including measurement, analytical techniques and strategies, and computer applications in human biology. Like many other biologically oriented disciplines, the field of human biology has undergone considerable growth and diversification in recent years, and the expansion of the aims and scope of the Journal is a reflection of this growth and membership diversification. The Journal is committed to prompt review, and priority publication is given to manuscripts with novel or timely findings, and to manuscripts of unusual interest.