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Ou-Yang MC, Sun Y, Liebowitz M, Chen CC, Fang ML, Dai W, Chuang TW, Chen JL. Correction: Accelerated weight gain, prematurity, and the risk of childhood obesity: A meta-analysis and systematic review. PLoS One 2024; 19:e0298556. [PMID: 38315715 PMCID: PMC10843033 DOI: 10.1371/journal.pone.0298556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0232238.].
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Critical examination of relationships between early growth and childhood overweight in extremely preterm infants. J Perinatol 2021; 41:2774-2781. [PMID: 34404924 DOI: 10.1038/s41372-021-01182-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 07/19/2021] [Accepted: 07/29/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To identify the prevalence and risk factors for childhood overweight and obesity (OWO) at 3-year corrected age in children born <1500 g <29 weeks gestation. STUDY DESIGN A multicentre retrospective cohort study for preterm infants admitted to neonatal intensive care units between 2001 and 2014. RESULTS Data were available for 911 (89.4%) of the 1019 infants who met the inclusion criteria. Of them, 22 (2.4%) had OWO. There were no associations between OWO and being small for gestational age (RR = 1.3, 95% confidence interval (CI): 0.3-5.4) or weight <10th percentile at 36 weeks (RR = 1.1, 95% CI: 0.4-2.8). OWO was associated with low maternal education (RR = 7.4, 95% CI: 2.1-26), maternal diabetes (RR = 5.2, 95% CI: 1.9-15) and neonatal brain injury (RR = 4.9, 95% CI: 1.8-14). Adjusting for concurrent child weight at 3 years of age resulted in an overadjustment bias. CONCLUSION Small size at birth or at 36 weeks gestation in extremely preterm infants is not associated with increased risk of early childhood overgrowth or obesity. CLINICAL TRIAL REGISTRATION NCT03064022.
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Elmrayed S, Metcalfe A, Brenner D, Wollny K, Fenton TR. Are small-for-gestational-age preterm infants at increased risk of overweight? Statistical pitfalls in overadjusting for body size measures. J Perinatol 2021; 41:1845-1851. [PMID: 33850286 DOI: 10.1038/s41372-021-01050-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 02/04/2021] [Accepted: 03/29/2021] [Indexed: 01/31/2023]
Abstract
OBJECTIVE The objective of this study is to analyze the effect of adjusting for body measures on the association between small for gestational age (SGA) and overweight at 3 years. STUDY DESIGN Data were obtained from the Preterm Infant Multicenter Growth Study (n = 1089). Logistic regression was used, to adjust for confounders with additional adjustments separately for weight and height at 21 months. Marginal structural models (MSMs) estimated the direct effect of SGA on overweight. RESULTS The crude and adjusted for confounders models yielded null associations between SGA and overweight. Adjusting for height yielded a positive association (odds ratio (OR): 2.31, 95% CI: 0.52-10.26) and adjusting for weight provided a significantly positive association (OR: 6.60, 95% CI: 1.10-37.14). The MSMs, with height and weight held constant, provided no evidence for a direct effect of SGA on overweight (OR: 0.83, 95% CI: 0.14-5.01, OR: 0.71, 95% CI: 0.18-2.81, respectively). CONCLUSION Adjusting for body measures can change the association between SGA and overweight, providing spurious estimates.
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Affiliation(s)
- Seham Elmrayed
- Department of Community Health Sciences, O'Brien Institute of Public Health, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
| | - Amy Metcalfe
- Department of Community Health Sciences, O'Brien Institute of Public Health, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Darren Brenner
- Department of Community Health Sciences, O'Brien Institute of Public Health, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Krista Wollny
- Department of Community Health Sciences, O'Brien Institute of Public Health, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Tanis R Fenton
- Department of Community Health Sciences, O'Brien Institute of Public Health, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Nutrition Services, Alberta Health Services, Calgary, AB, Canada
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Landmann E, Brugger M, Blank V, Wudy SA, Hartmann M, Strauch K, Rudloff S. Adrenal Steroid Metabolism and Blood Pressure in 5- to 7-Year-Old Children Born Preterm as Compared to Peers Born at Term. Front Pediatr 2021; 9:754989. [PMID: 34917560 PMCID: PMC8669960 DOI: 10.3389/fped.2021.754989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 10/27/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Previous studies indicated preterm birth to be a risk factor for hypertension in adolescence and adulthood. However, studies in children investigating the underlying mechanisms are scarce. Objective: We hypothesized children born preterm to have higher excretion of cortisol and/or androgen metabolites per day concomitantly with higher blood pressure as compared to peers born at term. We thus aimed to compare urinary steroid profiles and blood pressure between 5- to 7-year-old children born preterm and peers born at term. Furthermore, aldosterone precursor excretion per day was compared between both groups. Methods: Blood pressure was measured in 236 children (preterms n = 116; gestational age 29.8 ± 2.6 (30; 24-33) weeks [mean ± standard deviation (median; range)]) using an automatic oscillometric device. Urinary steroid profiles were determined in 24-h urine samples (preterms n = 109; terms n = 113) using gas chromatographic-mass spectrometric analysis. To assess excretion of cortisol and androgen metabolites per day, major cortisol and androgen metabolites were summed, respectively. To assess aldosterone excretion per day tetrahydrocorticosterone, 5α-tetrahydrocorticosterone, and tetrahydro-11-deydrocorticosterone were summed. Results: Multiple regression analyses showed prematurity to be associated with systolic but not with diastolic blood pressure. When adjusted for potential confounders (prematurity, gender, age at day of examination, being born small for gestational age, breastfeeding, accelerated weight gain during infancy, family history of cardiovascular disease, parental hypertension, and body mass index) prematurity was shown to be associated with an increase in systolic blood pressure by 2.87 mmHg (95% confidence interval 0.48-5.27; p = 0.02). Cortisol, androgen metabolite, and aldosterone precursor excretion per day were not higher in individuals born preterm. In contrast to our hypothesis, multiple regression analysis showed prematurity to independently decrease cortisol and aldosterone precursor excretion per day (p < 0.001 and 0.04, respectively). Conclusion: This study provides further evidence for systolic blood pressure to be higher after preterm birth as early as at the age of 5 to 7 years. However, this seems not to be explained by elevated excretion of cortisol and/or androgen metabolites.
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Affiliation(s)
- Eva Landmann
- Department of Pediatric Hematology and Oncology, Center of Child and Adolescent Medicine, Justus Liebig University Giessen, Giessen, Germany
| | - Markus Brugger
- Institute of Medical Biometry and Epidemiology, Philipps-University Marburg, Marburg, Germany.,Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Institute of Medical Information Processing, Biometry and Epidemiology - IBE, Chair of Genetic Epidemiology, LMU Munich, Munich, Germany.,Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Verena Blank
- Department of Neuropediatrics, Center of Child and Adolescent Medicine, Justus Liebig University Giessen, Giessen, Germany
| | - Stefan A Wudy
- Department of Pediatrics and Neonatology, Justus Liebig University Giessen, Giessen, Germany.,Steroid Research and Mass Spectrometry Unit, Division of Pediatric Endocrinology and Diabetology, Center of Child and Adolescent Medicine, Justus-Liebig-University Giessen, Giessen, Germany
| | - Michaela Hartmann
- Department of Pediatrics and Neonatology, Justus Liebig University Giessen, Giessen, Germany.,Steroid Research and Mass Spectrometry Unit, Division of Pediatric Endocrinology and Diabetology, Center of Child and Adolescent Medicine, Justus-Liebig-University Giessen, Giessen, Germany
| | - Konstantin Strauch
- Institute of Medical Biometry and Epidemiology, Philipps-University Marburg, Marburg, Germany.,Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Institute of Medical Information Processing, Biometry and Epidemiology - IBE, Chair of Genetic Epidemiology, LMU Munich, Munich, Germany.,Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Silvia Rudloff
- Department of Pediatrics and Neonatology, Justus Liebig University Giessen, Giessen, Germany.,Institute of Nutritional Science, Justus Liebig University Giessen, Giessen, Germany
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Cardiovascular risk factors in those born preterm - systematic review and meta-analysis. J Dev Orig Health Dis 2020; 12:539-554. [PMID: 33028453 DOI: 10.1017/s2040174420000914] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Emerging evidence demonstrates a link between preterm birth (PTB) and later life cardiovascular disease (CVD). We conducted a systematic review and meta-analysis to compare conventional CVD risk factors between those born preterm and at term. PubMed, CINAHL, SCOPUS, and EMBASE databases were searched. The review protocol is registered in PROSPERO (CRD42018095005). CVD risk factors including systolic blood pressure (SBP), diastolic blood pressure (DBP), body mass index, lipid profile, blood glucose, and fasting insulin among those born preterm (<37 weeks' gestation) were compared with those born at term (≥37 weeks' gestation). Subgroup analyses based on gender, age, gestational at birth (<32 weeks' gestation and <28 weeks' gestation), and PTB associated with small for gestational age or average for gestational age were also performed. Fifty-six studies provided data on 308,987 individuals. Being born preterm was associated with 3.26 mmHg (95% confidence interval [CI] 2.08 to 4.44) higher mean SBP and 1.32 mmHg (95% CI: 0.61 to 2.04) higher mean DBP compared to being born at term. Subgroup analyses demonstrated that SBP was higher among (a) preterm compared to term groups from early adolescence until adulthood; (b) females born preterm but not among males born preterm compared to term controls; and (c) those born at <32 weeks or <28 weeks compared to term. Our meta-analyses demonstrate higher SBP and DBP among those born preterm compared to term. The difference in SBP is evident from early adolescence until adulthood.
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Ou-Yang MC, Sun Y, Liebowitz M, Chen CC, Fang ML, Dai W, Chuang TW, Chen JL. Accelerated weight gain, prematurity, and the risk of childhood obesity: A meta-analysis and systematic review. PLoS One 2020; 15:e0232238. [PMID: 32369502 PMCID: PMC7199955 DOI: 10.1371/journal.pone.0232238] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 04/10/2020] [Indexed: 12/28/2022] Open
Abstract
The purpose of this systematic review and meta-analysis of the literature was to analyze and evaluate the impact of prematurity and accelerated weight gain on the risk of childhood and adolescent obesity. CINAHL, Embase, PubMed, and Web of Science databases were searched until December 2019 which yielded 19 studies with a total of 169,439 children enrolled were systematically reviewed. The results revealed that preterm infants had a greater likelihood of childhood obesity (defined as BMI ≥95th percentile for age-sex), than term infants (OR = 1.19, 95% CI [1.13, 1.26]). However, no difference of childhood obesity was found between "small for gestational age"(SGA) and "appropriate for gestational age"(AGA) among preterms. Accelerated weight gain (defined as weight gain velocity during first two years after birth) significantly increased the likelihood of subsequent childhood obesity among preterms (aOR = 1.87, 95% CI [1.57, 2.231]). In conclusion, accelerated weight gain at infancy among preterm children may be a critical contributor to obesity in later life. Establishing optimal growth trajectories and timely referral to health care providers may be of clinical importance.
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Affiliation(s)
- Mei-Chen Ou-Yang
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University, College of Medicine, Kaohsiung, Taiwan
| | - Yao Sun
- Department of Pediatrics, University of California, San Francisco, California, United States of America
| | - Melissa Liebowitz
- Department of Pediatrics, University of California, San Francisco, California, United States of America
| | - Chih-Cheng Chen
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University, College of Medicine, Kaohsiung, Taiwan
| | - Min-Lin Fang
- Medicine Library and Center for Knowledge Management, University of California, San Francisco, California, United States of America
| | - Weiwei Dai
- Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Tang-Wei Chuang
- Division of Hepatogastroenterology, Department of Internal Medicine, Chi Mei Medical Center, Liouying, Taiwan
| | - Jyu-Lin Chen
- School of Nursing, University of California, San Francisco, California, United States of America
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Forsum EK, Flinke E, Olhager E. Premature birth was not associated with increased body fatness in four-year-old boys and girls. Acta Paediatr 2020; 109:327-331. [PMID: 31461786 DOI: 10.1111/apa.14990] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/03/2019] [Accepted: 08/26/2019] [Indexed: 12/15/2022]
Abstract
AIM Premature birth is a worldwide problem and increases the risk of chronic disease later in life. Prematurely born infants may have a high percentage of body fat at term-equivalent age, but it is unclear if this characteristic is maintained in childhood. Therefore, we compared the size and body composition of four-year-old prematurely born children to such values of full-term controls. METHODS Between 2013 and 2015, we assessed weight, height, fat mass and fat-free mass, using air displacement plethysmography in 188 reasonably healthy prematurely born four-year-olds (98 boys). RESULTS At four years of age, prematurely born children (gestational weeks at birth: 23.3-36.9) tended to be lighter and shorter and to contain less fat mass and fat-free mass than did full-term controls. The gestational age at birth of the prematurely born children correlated positively and significantly (P < .05) with height, weight, body mass index, fat mass (kg, %), fat mass index and fat-free mass (kg) in girls but not in boys. CONCLUSION Prematurity was not associated with increased body fatness in our four-year-olds. Our findings are relevant in relation to previously published results showing that premature birth is associated with chronic disease later in life.
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Affiliation(s)
| | - Eva Flinke
- Department of Clinical and Experimental Medicine Linköping University Linköping Sweden
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Kistner A. Does low birthweight matter? Acta Paediatr 2020; 109:228-230. [PMID: 31746022 PMCID: PMC7004169 DOI: 10.1111/apa.15064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anna Kistner
- Department of Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
- Medical Radiation Physics and Nuclear Medicine, Imaging and Physiology Karolinska University Hospital Stockholm Sweden
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Vereen RJ, Dobson NR, Olsen CH, Raiciulescu S, Kuehn D, Stokes TA, Hunt CE. Longitudinal growth changes from birth to 8-9 years in preterm and full term births. J Neonatal Perinatal Med 2020; 13:223-230. [PMID: 31796687 DOI: 10.3233/npm-190219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND The aim of this study is to assess the effect of age at adiposity rebound (AR) and changes in growth between birth and 6 months on growth status at 8-9 years in children born term and preterm. Age at AR is inversely correlated with risk for later obesity in children born full term, but has not been analyzed in children born preterm. METHODS Birth anthropometrics, and weight and length/height data from age 6 months through 8-9 years were recorded for 175 children born in 2008 in the military health system. Calculated variables include body mass index (BMI, kg/m2), Z-scores, and age at AR. RESULTS Age at AR could be calculated for 150 children (32% preterm); average age was 5.4 years and 5.3 years for children born term and preterm, respectively (NS). For children born term and preterm, there was a significant correlation between younger age at AR and higher BMI Z-score at 8-9 years (r = - 0.685), and a direct relationship between weight Z-score change from birth to 6 months and weight Z-scores at 8-9 years (p = 0.034). CONCLUSIONS Younger age at AR correlates with higher BMI Z-score at 8-9 years in children born both term and preterm. Weight gain from birth to 6 months correlates with weight Z-score at 8-9 years. These results emphasize the importance of younger age at AR in addition to greater early weight gain as an indicator of later obesity.
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Affiliation(s)
- Rasheda J Vereen
- National Capital Consortium Pediatrics Residency (Walter Reed National Military Medical Center), Bethesda, MD, USA
| | - Nicole R Dobson
- Department of Pediatrics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Cara H Olsen
- Department Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Sorana Raiciulescu
- Department Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Devon Kuehn
- Department of Pediatrics, East Carolina University, Greenville, NC, USA
| | - Theophil A Stokes
- Department of Pediatrics, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Carl E Hunt
- Department of Pediatrics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
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Kotecha SJ, Lowe J, Kotecha S. Effect of foetal and infant growth and body composition on respiratory outcomes in preterm-born children. Paediatr Respir Rev 2018; 28:55-62. [PMID: 29343422 DOI: 10.1016/j.prrv.2017.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 12/13/2017] [Indexed: 01/21/2023]
Abstract
Body composition and growth outcomes of preterm-born subjects have been studied by many researchers. In general, preterm-born children have lower height and weight especially in infancy. Despite showing potential for catch-up growth, they continue to lag behind their term counterparts in adolescence and adulthood. The various methods of studying body composition and the differing gestations and ages at which it is assessed may go some way to explaining the inconsistent results observed in different studies. In addition, there is a paucity of data on the effects of foetal and infant growth and of body composition on later respiratory outcomes. In largely term-born subjects, foetal growth and growth trajectories appear to have differential effects on later respiratory outcomes. Early weight gain in infancy appears to be associated with increased respiratory symptoms in childhood but catch-up growth in infancy appears to be associated with possible improved lung function status.
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Affiliation(s)
- Sarah J Kotecha
- Department of Child Health, School of Medicine, Cardiff University, Cardiff, UK
| | - John Lowe
- Department of Child Health, School of Medicine, Cardiff University, Cardiff, UK
| | - Sailesh Kotecha
- Department of Child Health, School of Medicine, Cardiff University, Cardiff, UK.
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Villela LD, Méio MDBB, de Matos Fonseca V, de Abranches AD, Junior SCG, da Costa ACC, Murta MM, Nehab SRG, Soares FVM, Moreira MEL. Growth and body composition of preterm infants less than or equal to 32 weeks: Cohort study. Early Hum Dev 2018; 117:90-95. [PMID: 29360048 DOI: 10.1016/j.earlhumdev.2018.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 12/08/2017] [Accepted: 01/10/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Extremely preterm infants with weights less than the 10th percentile at discharge have a fat-free mass deficit. AIM To analyze the relationship of weight Z-scores less than -2SD at term age with fat-free mass and fat mass at term age and at 1 and 3 months of corrected age in very preterm infants. STUDY DESIGN COHORT STUDY: Subjects: Sixty-six preterm infants born before or at 32 weeks gestation with birth weight equal or greater than the 10th percentile for age were included at term age. They were classified according to weight Z-score as either: "term (-)" (n = 18) if weight Z-scores were less -2SD or "term (+)" (n = 48) if the weight Z-scores were equal or greater than -2SD at term age. OUTCOME MEASURES Growth and body composition by an air displacement plethysmography system and bioimpedance were assessed at term age and 1 and 3 months of corrected age. RESULTS Lower fat-free mass persisted up to 3 months in the "term (-)" group [4137 g (645) vs 4592 g (707), p < .01]. Fat mass was lower in the "term (-)" group at term and at 1 month but was similar at 3 months of corrected age [1295 g (774) vs 1477 g (782), p = .109]. Weight, length and head circumference Z-scores were lower in the "term (-)" group compared to those in the "term (+)" group. CONCLUSIONS The lean tissue deficits were maintained in the "term (-)" group while the differences in body fat percentage were not.
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12
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Body composition at birth and its relationship with neonatal anthropometric ratios: the newborn body composition study of the INTERGROWTH-21 st project. Pediatr Res 2017; 82:305-316. [PMID: 28445454 PMCID: PMC5605677 DOI: 10.1038/pr.2017.52] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/17/2017] [Indexed: 12/12/2022]
Abstract
BackgroundWe aimed to describe newborn body composition and identify which anthropometric ratio (weight/length; BMI; or ponderal index, PI) best predicts fat mass (FM) and fat-free mass (FFM).MethodsAir-displacement plethysmography (PEA POD) was used to estimate FM, FFM, and body fat percentage (BF%). Associations between FFM, FM, and BF% and weight/length, BMI, and PI were evaluated in 1,019 newborns using multivariate regression analysis. Charts for FM, FFM, and BF% were generated using a prescriptive subsample (n=247). Standards for the best-predicting anthropometric ratio were calculated utilizing the same population used for the INTERGROWTH-21st Newborn Size Standards (n=20,479).ResultsFFM and FM increased consistently during late pregnancy. Differential FM, BF%, and FFM patterns were observed for those born preterm (34+0-36+6 weeks' gestation) and with impaired intrauterine growth. Weight/length by gestational age (GA) was a better predictor of FFM and FM (adjusted R2=0.92 and 0.71, respectively) than BMI or PI, independent of sex, GA, and timing of measurement. Results were almost identical when only preterm newborns were studied. We present sex-specific centiles for weight/length ratio for GA.ConclusionsWeight/length best predicts newborn FFM and FM. There are differential FM, FFM, and BF% patterns by sex, GA, and size at birth.
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Body Composition Trajectories From Infancy to Preschool in Children Born Premature Versus Full-term. J Pediatr Gastroenterol Nutr 2017; 64:e147-e153. [PMID: 28045768 DOI: 10.1097/mpg.0000000000001494] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVES The aim of the study was to longitudinally characterize infancy to preschool body composition trajectories and the association of early fat and fat-free mass gains with preschool age body composition in children born premature versus full-term. METHODS A cohort of appropriate-for-gestational age preterm (n = 20) and term (n = 51) infants were followed at 3 visits: "neonatal" visit 1 at 2 weeks of age for term and near term corrected age for preterm; "infancy" visit 2 at 3 to 4 months (preterm corrected age); "preschool" visit 3 at 4 years. Body composition via air displacement plethysmography and anthropometrics were measured at all visits. Tracking of infancy weight and body composition with preschool measurements was tested using Pearson partial correlation coefficients. Associations between serial body composition measurements were assessed using multiple linear regression. RESULTS Early differences in body composition between premature (mean gestational age 31.9 weeks, mean birth weight 1843 g) and full-term (mean gestational age 39.8 weeks) infants were not present at preschool age. Visit 1 body composition was not correlated with preschool measurements in the preterm infants. Visit 2 measurements were correlated with preschool measures. Fat-free mass accretion from visit 1 to visit 2 was positively associated with preschool lean mass (β = 0.038, P = 0.049) in preterm children, whereas fat accretion was not associated with preschool body composition. CONCLUSIONS Children born prematurely and full-term have similar body composition at preschool age. For preterms infancy fat-free mass gains, and not adiposity gains, are positively associated with preschool fat-free mass; this may be associated with lower risk of later obesity and adverse metabolic outcomes.
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Hui LL, Lam HS, Leung GM, Schooling CM. Late prematurity and adiposity in adolescents: Evidence from "Children of 1997" birth cohort. Obesity (Silver Spring) 2015; 23:2309-14. [PMID: 26381497 DOI: 10.1002/oby.21267] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 06/06/2015] [Accepted: 07/01/2015] [Indexed: 11/07/2022]
Abstract
OBJECTIVE The association of late prematurity with later adiposity is unclear, and the mediating role of infant growth is seldom studied. We assessed the association of late prematurity with markers of adiposity in adolescence and tested whether accelerated infant weight gain mediated the association. METHODS In the Chinese birth cohort "Children of 1997," we used multivariable linear regression to assess the adjusted association of late premature (n = 295), compared to term (n = 6874), births with markers of adiposity at 14 years. We tested whether any association was mediated by accelerated weight gain from birth to 12 months, i.e., a change in weight z-score ≥0.67. RESULTS Late premature births had greater body mass index (BMI) z-score (0.21, 95% confidence interval (CI) 0.07, 0.35), waist-hip ratio z-score (0.16, 95% CI 0.03, 0.29), and waist-height ratio z-score (0.27, 95% CI 0.14, 0.40) than term births in adolescence. The association of late prematurity with higher adolescent BMI, but not waist ratios, was mediated by accelerated infant weight gain. CONCLUSIONS Late prematurity was associated with higher BMI and waist ratios in adolescence, but only the association with BMI was mediated by infant weight gain, suggesting vulnerability to metabolic risk in late premature births may arise through multiple pathways.
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Affiliation(s)
- L L Hui
- School of Public Health, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pokfulam, Hong Kong
| | - Hugh S Lam
- Department of Paediatrics, Faculty of Medicine, the Chinese University of Hong Kong, Pokfulam, Hong Kong
| | - Gabriel M Leung
- School of Public Health, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pokfulam, Hong Kong
| | - Catherine M Schooling
- School of Public Health, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pokfulam, Hong Kong
- CUNY School of Public Health and Hunter College, New York, USA
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Roggero P, Giannì ML, Forzenigo L, Tondolo T, Taroni F, Liotto N, Piemontese P, Biondetti P, Mosca F. No relative increase in intra-abdominal adipose tissue in healthy unstressed preterm infants at term. Neonatology 2015; 107:14-9. [PMID: 25301293 DOI: 10.1159/000364855] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 05/26/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND Preterm infants may be at risk for altered adiposity, a known risk factor for unfavorable metabolic and cardiovascular outcomes. OBJECTIVES The aim was to compare body composition (total body fat mass (FM), subcutaneous and intra-abdominal adipose tissue (AT)) between infants born preterm and at term. METHODS We conducted an observational, cross-sectional study that involved 50 infants born preterm free from major co-morbidities and 34 term healthy breastfed infants. Anthropometric measurements, body composition (total body FM, subcutaneous and intra-abdominal AT) were assessed at 40-42 weeks postconceptional age for preterm infants and within 15 days of birth for term infants. Total body FM was assessed by an air displacement plethysmography system and subcutaneous abdominal and intra-abdominal AT were assessed by magnetic resonance imaging using a commercially available software program. RESULTS Compared to term infants, mean (SD) total body FM (g) (636.7 (247) vs. 418.4 (253), p < 0.0001) and mean (SD) subcutaneous abdominal AT (g) (123 (36) vs. 98.9 (22), p < 0.001) were significantly higher in preterm infants but mean (SD) fat-free mass (g) (2,530 (420) vs. 2,965 (389), p < 0.0001) and mean (SD) intra-abdominal AT (10.9 (5.2) vs. 18.2 (13.2), p = 0.001) were significantly lower. CONCLUSIONS In the absence of severe illness during the hospital stay, prematurity, although associated with increased total body FM, does not appear to be associated with a relative increase in intra-abdominal AT compared to term infants.
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Affiliation(s)
- Paola Roggero
- Neonatal Intensive Care Unit, Department of Clinical Science and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
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