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Broad J, Robertson RC, Evans C, Perussolo J, Lum G, Piper JD, Loucaides E, Ziruma A, Chasekwa B, Ntozini R, Bourke CD, Prendergast AJ. Maternal inflammatory and microbial drivers of low birthweight in low- and middle-income countries. Paediatr Int Child Health 2024; 44:79-93. [PMID: 39066726 DOI: 10.1080/20469047.2024.2380974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 07/10/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND Low birthweight (LBW) is when an infant is born too soon or too small, and it affects one in seven infants in low- and middle-income countries. LBW has a significant impact on short-term morbidity and mortality, and it impairs long-term health and human capital. Antenatal microbial and inflammatory exposure may contribute to LBW. METHODS Ovid-Medline, Embase and Cochrane databases were searched for English-language articles evaluating inflammatory, microbial or infective causes of LBW, small-for-gestational age, intra-uterine growth restriction or prematurity. Inclusion criteria were human studies including published data; conference abstracts and grey literature were excluded. A narrative synthesis of the literature was conducted. RESULTS Local infections may drive the underlying causes of LBW: for example, vaginitis and placental infection are associated with a greater risk of prematurity. Distal infection and inflammatory pathways are also associated with LBW, with an association between periodontitis and preterm delivery and environmental enteric dysfunction and reduced intra-uterine growth. Systemic maternal infections such as malaria and HIV are associated with LBW, even when infants are exposed to HIV but not infected. This latter association may be driven by chronic inflammation, co-infections and socio-economic confounders. Antimicrobial prophylaxis against other bacteria in pregnancy has shown minimal impact in most trials, though positive effects on birthweight have been found in some settings with a high infectious disease burden. CONCLUSION Maternal inflammatory and infective processes underlie LBW, and provide treatable pathways for interventions. However, an improved understanding of the mechanisms and pathways underlying LBW is needed, given the impact of LBW on life-course.
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Affiliation(s)
- Jonathan Broad
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
- Paediatrics Department, Croydon University Hospital, London, UK
| | - Ruairi C Robertson
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
| | - Ceri Evans
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
- Institute of Infection, Veterinary and Ecological Sciences, Liverpool, UK
| | - Jeniffer Perussolo
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
| | - Gina Lum
- Centre for Genomics and Child Health, Barts and The London School of Medicine and Dentistry, London, UK
| | - Joe D Piper
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
| | - Eva Loucaides
- Paediatrics Department, Croydon University Hospital, London, UK
| | - Asaph Ziruma
- Blizard Institute, Queen Mary University of London, London, UK
| | - Bernard Chasekwa
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
| | - Robert Ntozini
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
| | - Claire D Bourke
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
| | - Andrew J Prendergast
- Maternal and Child Health Research Department, Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
- Blizard Institute, Queen Mary University of London, London, UK
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Thompson DS, McKenzie K, Opondo C, Boyne MS, Lelijveld N, Wells JC, Cole TJ, Anujuo K, Abera M, Berhane M, Koulman A, Wootton SA, Kerac M, Badaloo A. Faster rehabilitation weight gain during childhood is associated with risk of non-communicable disease in adult survivors of severe acute malnutrition. PLOS GLOBAL PUBLIC HEALTH 2023; 3:e0002698. [PMID: 38127945 PMCID: PMC10734994 DOI: 10.1371/journal.pgph.0002698] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023]
Abstract
Nutritional rehabilitation during severe acute malnutrition (SAM) aims to quickly restore body size and minimize poor short-term outcomes. We hypothesized that faster weight gain during treatment is associated with greater cardiometabolic risk in adult life. Anthropometry, body composition (DEXA), blood pressure, blood glucose, insulin and lipids were measured in a cohort of adults who were hospitalized as children for SAM between 1963 and 1993. Weight and height measured during hospitalization and at one year post-recovery were abstracted from hospital records. Childhood weight gain during nutritional rehabilitation and weight and height gain one year post-recovery were analysed as continuous variables, quintiles and latent classes in age, sex and minimum weight-for-age z-scores-adjusted regression models against adult measurements. Data for 278 adult SAM survivors who had childhood admission records were analysed. Of these adults, 85 also had data collected 1 year post-hospitalisation. Sixty percent of participants were male, mean (SD) age was 28.2 (7.7) years, mean (SD) BMI was 23.6 (5.2) kg/m2. Mean admission age for SAM was 10.9 months (range 0.3-36.3 months), 77% were wasted (weight-for-height z-scores<-2). Mean rehabilitation weight gain (SD) was 10.1 (3.8) g/kg/day and 61.6 (25.3) g/day. Rehabilitation weight gain > 12.9 g/kg/day was associated with higher adult BMI (difference = 0.5 kg/m2, 95% CI: 0.1-0.9, p = 0.02), waist circumference (difference = 1.4 cm, 95% CI: 0.4-2.4, p = 0.005), fat mass (difference = 1.1 kg, 95% CI: 0.2-2, p = 0.02), fat mass index (difference = 0.32kg/m2, 95% CI: -0.0001-0.6, p = 0.05), and android fat mass (difference = 0.09 kg, 95% CI: 0.01-0.2, p = 0.03). Post-recovery weight gain (g/kg/month) was associated with lean mass (difference = 1.3 kg, 95% CI: 0.3-2.4, p = 0.015) and inversely associated with android-gynoid fat ratio (difference = -0.03, 95% CI: -0.07to-0.001 p = 0.045). Rehabilitation weight gain exceeding 13g/kg/day was associated with adult adiposity in young, normal-weight adult SAM survivors. This challenges existing guidelines for treating malnutrition and warrants further studies aiming at optimising these targets.
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Affiliation(s)
- Debbie S. Thompson
- Caribbean Institute for Health Research, The University of the West Indies, Kingston, Jamaica
| | - Kimberley McKenzie
- Caribbean Institute for Health Research, The University of the West Indies, Kingston, Jamaica
| | - Charles Opondo
- Department of Medical Statistics, Faculty of Epidemiology & Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Michael S. Boyne
- Department of Medicine, The University of the West Indies, Kingston, Jamaica
| | - Natasha Lelijveld
- Department of Population Health, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Centre for Maternal, Adolescent & Reproductive Child Health (MARCH), London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Jonathan C. Wells
- Population Policy and Practice Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Tim J. Cole
- Population Policy and Practice Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Kenneth Anujuo
- Department of Population Health, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Mubarek Abera
- Faculty of Medical Science, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Melkamu Berhane
- Faculty of Medical Science, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Albert Koulman
- Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Stephen A. Wootton
- Southampton NIHR Biomedical Research Centre, University of Southampton, Southampton, United Kingdom
| | - Marko Kerac
- Department of Population Health, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Centre for Maternal, Adolescent & Reproductive Child Health (MARCH), London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Asha Badaloo
- Caribbean Institute for Health Research, The University of the West Indies, Kingston, Jamaica
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Heltbech MS, Jensen CL, Girma T, Abera M, Admassu B, Kæstel P, Wells JCK, Michaelsen KF, Friis H, Andersen GS, Wibæk R. The Associations of Breastfeeding Status at 6 Months with Anthropometry, Body Composition, and Cardiometabolic Markers at 5 Years in the Ethiopian Infant Anthropometry and Body Composition Birth Cohort. Nutrients 2023; 15:4595. [PMID: 37960248 PMCID: PMC10647349 DOI: 10.3390/nu15214595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
(1) Background: Breastfeeding (BF) has been shown to lower the risk of overweight and cardiometabolic disease later in life. However, evidence from low-income settings remains sparse. We examined the associations of BF status at 6 months with anthropometry, body composition (BC), and cardiometabolic markers at 5 years in Ethiopian children. (2) Methods: Mother-child pairs from the iABC birth cohort were categorised into four BF groups at 6 months: 1. "Exclusive", 2. "Almost exclusive", 3. "Predominantly" and 4. "Partial or none". The associations of BF status with anthropometry, BC, and cardiometabolic markers at 5 years were examined using multiple linear regression analyses in three adjustment models. (3) Results: A total of 306 mother-child pairs were included. Compared with "Exclusive", the nonexclusive BF practices were associated with a lower BMI, blood pressure, and HDL-cholesterol at 5 years. Compared with "Exclusive", "Predominantly" and "Almost exclusive" had shorter stature of -1.7 cm (-3.3, -0.2) and -1.2 cm (-2.9, 0.5) and a lower fat-free mass index of -0.36 kg/m2 (-0.71, -0.005) and -0.38 kg/m2 (-0.76, 0.007), respectively, but a similar fat mass index. Compared with "Exclusive", "Predominantly" had higher insulin of 53% (2.01, 130.49), "Almost exclusive" had lower total and LDL-cholesterol, and "Partial or none" had a lower fat mass index. (5) Conclusions: Our data suggest that children exclusively breastfed at 6 months of age are overall larger at 5 years, with greater stature, higher fat-free mass but similar fat mass, higher HDL-cholesterol and blood pressure, and lower insulin concentrations compared with predominantly breastfed children. Long-term studies of the associations between BF and metabolic health are needed to inform policies.
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Affiliation(s)
- Mathilde S. Heltbech
- Department of Nutrition, Exercise and Sports, University of Copenhagen, 1958 Copenhagen, Denmark (P.K.); (K.F.M.); (H.F.)
| | - Cecilie L. Jensen
- Department of Nutrition, Exercise and Sports, University of Copenhagen, 1958 Copenhagen, Denmark (P.K.); (K.F.M.); (H.F.)
| | - Tsinuel Girma
- Department of Pediatrics and Child Health, Jimma University, Jimma P.O. Box 378, Ethiopia;
| | - Mubarek Abera
- Department of Psychiatry, Faculty of Medical Sciences, Jimma University, Jimma P.O. Box 378, Ethiopia;
| | - Bitiya Admassu
- Jimma University Clinical and Nutrition Research Partnership (JUCAN), Jimma University, Jimma P.O. Box 378, Ethiopia;
| | - Pernille Kæstel
- Department of Nutrition, Exercise and Sports, University of Copenhagen, 1958 Copenhagen, Denmark (P.K.); (K.F.M.); (H.F.)
| | - Jonathan C. K. Wells
- Childhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK;
| | - Kim F. Michaelsen
- Department of Nutrition, Exercise and Sports, University of Copenhagen, 1958 Copenhagen, Denmark (P.K.); (K.F.M.); (H.F.)
| | - Henrik Friis
- Department of Nutrition, Exercise and Sports, University of Copenhagen, 1958 Copenhagen, Denmark (P.K.); (K.F.M.); (H.F.)
| | - Gregers S. Andersen
- Clinical Research, Copenhagen University Hospital–Steno Diabetes Center Copenhagen, 2730 Herlev, Denmark
| | - Rasmus Wibæk
- Clinical Research, Copenhagen University Hospital–Steno Diabetes Center Copenhagen, 2730 Herlev, Denmark
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Henriksson P, Sandborg J, Henström M, Delisle Nyström C, Ek E, Ortega FB, Löf M. Body composition, physical fitness and cardiovascular risk factors in 9-year-old children. Sci Rep 2022; 12:2665. [PMID: 35177687 PMCID: PMC8854391 DOI: 10.1038/s41598-022-06578-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/01/2022] [Indexed: 12/24/2022] Open
Abstract
The independent associations of body composition and physical fitness components with cardiovascular disease (CVD) risk factors in childhood are not fully understood. Thus, this cross-sectional study examined the independent associations of body composition and physical fitness with CVD risk factors in Swedish 9-year-old children (n = 411). Unadjusted linear regression analyses showed that body mass index (BMI), % fat mass and fat mass index were all positively associated with systolic and diastolic blood pressure, Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) and Metabolic Syndrome (MetS) score (all β ≥ 0.229, P ≤ 0.001). These associations were virtually unaffected by adjustments for basic covariates (child's age and sex, maternal educational level and maternal BMI), fat-free mass and physical fitness. Fat-free mass index had generally weak associations with CVD risk factors and no associations were statistically significant after adjustments (all P > 0.27). Greater cardiorespiratory fitness and motor fitness were associated with lower HOMA-IR and MetS score in unadjusted models (all β ≤ - 0.158, P ≤ 0.039) but not after adjustments for basic covariates and body composition. These findings indicate that cardiovascular health promotion in childhood may focus on the maintenance of a healthy fat mass.
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Affiliation(s)
- Pontus Henriksson
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, 58183, Sweden.
| | - Johanna Sandborg
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, 58183, Sweden
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Stockholm, Sweden
| | - Maria Henström
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Stockholm, Sweden
| | | | - Evelina Ek
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, 58183, Sweden
| | - Francisco B Ortega
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Stockholm, Sweden
- PROFITH (PROmoting FITness and Health Through Physical Activity) Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, Research Institute of Sport and Health, University of Granada, Granada, Spain
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Marie Löf
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, 58183, Sweden
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Stockholm, Sweden
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Different body parts' fat mass and corrected QT interval on the electrocardiogram: The Fasa PERSIAN Cohort Study. BMC Cardiovasc Disord 2021; 21:277. [PMID: 34090333 PMCID: PMC8178852 DOI: 10.1186/s12872-021-02095-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/01/2021] [Indexed: 11/15/2022] Open
Abstract
Background Previous studies suggested that obesity and fat mass are associated with QT interval prolongation, but the role of different body parts' fat mass is unclear. The associations between total and regional fat mass (FM) and corrected QT interval (QTc) were investigated for the first time in this study.
Methods In this sub-analysis of Fasa PERSIAN cohort Study data, 3217 subjects aged 35–70 entered our study. Body fat mass was assessed by bioelectrical impedance analysis and QTc interval calculated by the QT interval measured by Cardiax® software from ECGs and Bazett’s formula. Uni- and multi-variable linear and logistic regression was performed in IBM SPSS Statistics v23. Results In males, the fat mass to fat-free mass (FM/FFM) ratio in the trunk, arms, total body, and legs were significantly higher in the prolonged QTc group (QTc > 450 ms). Trunk (B = 0.148), total (B = 0.137), arms (B = 0.124), legs (B = 0.107) fat mass index (FMI) showed significant positive relationship with continuous QTc (P-value < 0.001). Also, just the fat-free mass index of legs had significant positive associations with QTc interval (P-value < 0.05). Surprisingly, in females, the mean of FM/FFM ratio in trunk and legs in the normal QTc group had higher values than the prolonged QTc group (QTc > 470 ms). Also, none of the body composition variables had a significant correlation with continuous QTc. Conclusion Our study suggested that FMI ratios in the trunk, total body, arms, and legs were positively associated with QTc interval in males, respectively, from a higher to a lower beta-coefficient. Such associations were not seen in females. Our study implies that body fat mass may be an independent risk factor for higher QTc interval and, consequently, more cardiovascular events that should be investigated. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-021-02095-2.
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Johnson W, Norris T, Bann D, Cameron N, Wells JK, Cole TJ, Hardy R. Differences in the relationship of weight to height, and thus the meaning of BMI, according to age, sex, and birth year cohort. Ann Hum Biol 2020; 47:199-207. [PMID: 32429756 PMCID: PMC7261404 DOI: 10.1080/03014460.2020.1737731] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/12/2020] [Accepted: 02/11/2020] [Indexed: 01/05/2023]
Abstract
Background: Weight can be adjusted for height using the Benn parameter (kg/mB), where B is the power that minimises the correlation with height.Aim: To investigate how the Benn parameter changes across age (10-65 years) and time (1956-2015) and differs between sexes.Subjects and methods: The sample comprised 49,717 individuals born in 1946, 1958, 1970 or 2001. Cross-sectional estimates of the Benn parameter were produced and cohort differences at ages 10/11 and 42/43 years were examined using linear regression. Multilevel modelling was used to develop trajectories showing how the Benn parameter changed over age from childhood to mid-adulthood in the three older cohorts.Results: The Benn parameter was closest to 2 in childhood but consistently lower across adulthood, particularly in females and the most recent cohort. At ages 10/11 years, the Benn parameter was greater than 3 in both sexes in the 2001 cohort but between 2.2 and 2.7 in the three older cohorts. This difference was estimated to be +0.67 (0.53, 0.81) in males and +0.53 (0.38, 0.68) in females, compared to the 1946 cohort, and was driven by a much higher weight SD in the 2001 cohort. Conversely, at ages 42/43 years, the Benn parameter was lowest in the 1970 cohort due to a slightly lower weight-height correlation. This difference was estimated to be -0.12 (-0.34, 0.10) in males and -0.15 (-0.42, 0.13) in females, compared to the 1946 cohort.Conclusions: Changes over time in the obesogenic environment appear to have firstly reduced the Benn parameter due to a lowering of the weight-height correlation but secondly and more drastically increased the Benn parameter due to increasing weight variation.
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Affiliation(s)
- William Johnson
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Tom Norris
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - David Bann
- Centre for Longitudinal Studies, UCL Institute of Education, London, UK
| | - Noël Cameron
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | | | - Tim J. Cole
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - Rebecca Hardy
- CLOSER, UCL Institute of Education, University College London, London, UK
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Manios Y, Karatzi K, Moschonis G, Ioannou G, Androutsos O, Lionis C, Chrousos G. Lifestyle, anthropometric, socio-demographic and perinatal correlates of early adolescence hypertension: The Healthy Growth Study. Nutr Metab Cardiovasc Dis 2019; 29:159-169. [PMID: 30660688 DOI: 10.1016/j.numecd.2018.10.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 10/12/2018] [Accepted: 10/15/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND AIMS Various lifestyle, anthropometric, socio-demographic and perinatal characteristics have been separately associated with elevated blood pressure in children and adolescents. The aim of this study was to simultaneously evaluate all potential risk factors and to identify the most dominant correlates of early adolescence hypertension in a large group of school children 9-13 years old. METHODS AND RESULTS A cross-sectional study with 1444 schoolchildren 9-13 years old, having full data on lifestyle, anthropometric, socio-demographic and perinatal indices, as well as blood pressure measurements. Early adolescents born large for their gestational age (LGA) (OR, 95% C.I. 0.49 (0.25-0.97)), those with higher levels of moderate to vigorous physical activity (MVPA) (OR, 95% C.I. 0.71 (0.53-0.96)) and those of a higher socioeconomic status (SES) (OR, 95% C.I. 0.51 (0.33-0.79)), had lower risk of hypertension, compared with their counterparts with appropriate birth weight, low levels of PA and with low SES respectively, independently of the variables used in the multivariate model. On the other hand, overweight and obese early adolescents (OR, 95% C.I. 2.61 (1.88-3.62)), those with central obesity (OR, 95% C.I. 1.75 (1.12-2.73)) and those having a hypertensive father (OR, 95% C.I. 1.93 (1.20-3.12)) had higher risk of hypertension compared with normal weight early adolescents and those without a family history of hypertension. CONCLUSIONS Among the parameters examined, early adolescence abnormal body weight and central obesity, low PA, non LGA, low SES family and family history of hypertension were found to be independently associated with higher risk of hypertension. The identified correlates of early adolescence hypertension can be used by public health initiatives for early detection and management of this major public health problem, prioritizing early adolescents and families at the highest possible risk for hypertension.
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Affiliation(s)
- Y Manios
- Department of Nutrition and Dietetics, School of Health Science & Education, Harokopio University of Athens, Greece.
| | - K Karatzi
- Department of Nutrition and Dietetics, School of Health Science & Education, Harokopio University of Athens, Greece
| | - G Moschonis
- Department of Rehabilitation, Nutrition and Sport, College of Science, Health and Engineering, La Trobe University, Bundoora, VIC 3086, Melbourne, Australia
| | - G Ioannou
- Department of Nutrition and Dietetics, School of Health Science & Education, Harokopio University of Athens, Greece
| | - O Androutsos
- Department of Nutrition and Dietetics, School of Health Science & Education, Harokopio University of Athens, Greece
| | - C Lionis
- Clinic of Social and Family Medicine, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - G Chrousos
- First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, "Aghia Sophia" Children's Hospital, Athens, Greece
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Cardoso JL, Leone C. Growth achieved and correlation with blood pressure levels in schoolchildren. ACTA ACUST UNITED AC 2018; 64:896-901. [PMID: 30517236 DOI: 10.1590/1806-9282.64.10.896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 01/20/2018] [Indexed: 11/21/2022]
Abstract
INTRODUCTION The prevalence of systemic arterial hypertension in childhood has increased progressively. OBJECTIVE To analyze blood pressure and height reached by children in public schools in the South of Brazil. METHODS This is a sectional study of a randomized sample of 1,082 students of six to seven and nine to ten years old used to evaluate blood pressure and height. Blood pressure levels were classified by percentile for gender, age and stature according to the North American reference of National High Blood Pressure Education Program Working Group on High Blood Pressure in Children and Adolescents. RESULTS Schoolchildren presented adequate growth, which was, on average, higher than the WHO reference values. Blood pressure levels were altered in 13.8% of children, with a higher frequency in the nine and ten year olds (17.6%). The isolated analysis of systolic and diastolic Blood pressure revealed a similar trend, with blood pressure levels higher than the greater the value of the Z-score for stature. CONCLUSION The schoolchildren in the study evidenced adequate growth and an elevated prevalence of pre-hypertension and arterial hypertension, which tended to be higher in older children and/or those that achieved a greater stature growth.
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Affiliation(s)
- Jane Laner Cardoso
- Professor of the Department of Public Health of the Federal University of Santa Catarina, Florianópolis, SC, Brasil
| | - Claudio Leone
- Full Professor of the Maternal and Child Health Department of Public Health School of the University of São Paulo, São Paulo, SP, Brasil
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Admassu B, Wells JCK, Girma T, Belachew T, Ritz C, Owino V, Abera M, Wibaek R, Michaelsen KF, Kæstel P, Friis H, Andersen GS. Body composition during early infancy and its relation with body composition at 4 years of age in Jimma, an Ethiopian prospective cohort study. Nutr Diabetes 2018; 8:46. [PMID: 30190452 PMCID: PMC6127223 DOI: 10.1038/s41387-018-0056-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/26/2018] [Accepted: 08/03/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND/OBJECTIVES Low and high birth weight and rapid weight gain during infancy are associated with childhood obesity. Associations of birth and infancy body composition (BC) growth with childhood BC remain unknown in low-income countries. We aimed to investigate the associations of fat mass (FM) and fat-free mass (FFM) at birth and its accretion during early infancy with FM and FFM at the age of 4 years. METHODS In the infant Anthropometry and Body Composition (iABC) cohort, BC was assessed at six consecutive time points from birth to 6 months and at 4 years of age by air displacement plethysmography. Multiple linear regression models were used to determine the association between FM and FFM at birth and their accretion rates during infancy and FM index (FMI) and FFM index (FFMI) at 4 years in 314 children. RESULTS One kilogram higher FFM at birth was associated with a 1.07 kg/m2 higher FFMI (95% CI 0.60, 1.55) at 4 years while a one SD increment in FFM accretion rate from 0 to 6 months was associated with a 0.24 kg/m2 increment in FFMI (95% CI 0.11, 0.36) and with a 0.20 kg/m2 higher FMI at 4 years (β = 0.20; 95% CI 0.04, 0.37). FFM at birth did not predict FMI at 4 years. FM at birth was associated with 1.17 kg/m2 higher FMI at 4 years (95% CI 0.13, 2.22) whereas FM accretion from 0 to 4 months was associated with an increase in FMI of 0.30 kg/m2 (95% CI 0.12, 0.47). FM at birth did not predict FFMI at 4 years, and neither did FM accretion from 0 to 4 months. CONCLUSIONS A higher FFM in early infancy predicted higher FFMI at 4 years while a higher FM accretion during early infancy predicted higher FMI at 4 years. Follow-up studies are merited to explore associations of childhood BC with cardio-metabolic risk later in life.
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Affiliation(s)
- Bitiya Admassu
- Department of Population and Family Health, Faculty of Public Health, Jimma University, Jimma, Ethiopia.
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.
| | - Jonathan C K Wells
- Childhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Tsinuel Girma
- Department of Pediatrics and Child Health, Faculty of Medical Sciences, Jimma University, Jimma, Ethiopia
| | - Tefera Belachew
- Department of Population and Family Health, Faculty of Public Health, Jimma University, Jimma, Ethiopia
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Victor Owino
- Technical University of Kenya, Haile Selassie Avenue, Nairobi, Kenya
| | - Mubarek Abera
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
- Department of Psychiatry, Faculty of Medical Sciences, Jimma University, Jimma, Ethiopia
| | - Rasmus Wibaek
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
- Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Kim F Michaelsen
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Pernille Kæstel
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Henrik Friis
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
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11
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Associations of stunting at 2 years with body composition and blood pressure at 8 years of age: longitudinal cohort analysis from lowland Nepal. Eur J Clin Nutr 2018; 73:302-310. [PMID: 30154534 PMCID: PMC6368558 DOI: 10.1038/s41430-018-0291-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 08/03/2018] [Accepted: 08/03/2018] [Indexed: 01/27/2023]
Abstract
BACKGROUND Stunting remains a very common form of child malnutrition worldwide, particularly in South Asian populations. There is poor understanding of how it develops and how it is associated with subsequent phenotype. SUBJECTS/METHODS We used data from a longitudinal cohort of children (n = 841) in lowland Nepal to investigate associations of stunting at 2 years with maternal traits and early growth patterns, and with body size and composition, kidney dimensions by ultrasound, lung function by spirometry and blood pressure (BP) at 8 years. RESULTS Compared to non-stunted children, children stunted at 2 years came from poorer families and had shorter, lighter mothers. They tended to have higher birth order, were born smaller, and remained shorter, lighter and thinner at 8 years. They had lower leg length, lean and fat masses, smaller kidneys, and reduced lung function (all p < 0.0001). These differences persisted with smaller magnitude after adjusting for current height, maternal height and education, family assets and birth order. Stunting was not associated with BP. DISCUSSION Stunting developed on an inter-generational timescale in this population and its risk increased with birth order. At 8 years, children stunted at 2 years had deficits in tissue masses and some aspects of physical function that were only partially attributable to their persisting short height and maternal phenotype. This suggests that the early stunting is associated with greater deficits in long-term outcomes than would be expected from the persistent short stature alone.
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12
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Abstract
OBJECTIVES Increasing evidence demonstrates that body composition in early life contributes to the programming of health later in life in both full-term and preterm infants. Given the important role of body composition, the increased availability of easy, noninvasive, and accurate techniques for its assessment has been recommended. The aim of the present study was to identify basic characteristics and anthropometric measurements that best correlate with body composition in infants. METHODS Anthropometric measurements and body composition assessed by air-displacement plethysmography were assessed either at birth or at term-corrected age in 1239 infants (654 full-term, 585 preterm). The associations of sex, GA (gestational age), and weight with FFM (fat-free mass) and FM (fat mass) adjusted by length (g/cm) were investigated by multiple linear regression models. Bland-Altman tests were performed, and an equation for calculating FFM was determined. RESULTS Preterm infants exhibited increased FM and reduced FFM compared with full-term infants (477.6 ± 204 vs 259.7 ± 147 g and 2583 ± 494 vs 2770 ± 364 g, respectively). GA, male sex, and weight were positively associated with FFM (r = 0.806, P < 0.0001; 6.1 g of average bias). GA and male sex were negatively associated with FM, whereas weight was positively associated with FM (r = 0.641, P < 0.0001; 4.9 g of average bias). CONCLUSIONS The assessment of body composition represents the criterion standard. When body composition assessment is not feasible, the equation based on sex, GA, and anthropometric measurements can be useful in predicting body composition in both full-term and preterm infants.
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13
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Arnold KF, Ellison G, Gadd SC, Textor J, Tennant P, Heppenstall A, Gilthorpe MS. Adjustment for time-invariant and time-varying confounders in 'unexplained residuals' models for longitudinal data within a causal framework and associated challenges. Stat Methods Med Res 2018; 28:1347-1364. [PMID: 29451093 PMCID: PMC6484949 DOI: 10.1177/0962280218756158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
‘Unexplained residuals’ models have been used within lifecourse epidemiology to
model an exposure measured longitudinally at several time points in relation to
a distal outcome. It has been claimed that these models have several advantages,
including: the ability to estimate multiple total causal effects in a single
model, and additional insight into the effect on the outcome of
greater-than-expected increases in the exposure compared to traditional
regression methods. We evaluate these properties and prove mathematically how
adjustment for confounding variables must be made within this modelling
framework. Importantly, we explicitly place unexplained residual models in a
causal framework using directed acyclic graphs. This allows for theoretical
justification of appropriate confounder adjustment and provides a framework for
extending our results to more complex scenarios than those examined in this
paper. We also discuss several interpretational issues relating to unexplained
residual models within a causal framework. We argue that unexplained residual
models offer no additional insights compared to traditional regression methods,
and, in fact, are more challenging to implement; moreover, they artificially
reduce estimated standard errors. Consequently, we conclude that unexplained
residual models, if used, must be implemented with great care.
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Affiliation(s)
- K F Arnold
- 1 Leeds Institute for Data Analytics, University of Leeds, Leeds, UK.,2 School of Medicine, University of Leeds, Leeds, UK
| | - Gth Ellison
- 1 Leeds Institute for Data Analytics, University of Leeds, Leeds, UK.,2 School of Medicine, University of Leeds, Leeds, UK
| | - S C Gadd
- 2 School of Medicine, University of Leeds, Leeds, UK
| | - J Textor
- 3 Tumor Immunology Lab, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Pwg Tennant
- 1 Leeds Institute for Data Analytics, University of Leeds, Leeds, UK.,4 School of Healthcare, University of Leeds, Leeds, UK
| | - A Heppenstall
- 1 Leeds Institute for Data Analytics, University of Leeds, Leeds, UK.,5 School of Geography, University of Leeds, Leeds, UK
| | - M S Gilthorpe
- 1 Leeds Institute for Data Analytics, University of Leeds, Leeds, UK.,2 School of Medicine, University of Leeds, Leeds, UK
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14
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Di Bonito P, Valerio G, Pacifico L, Chiesa C, Invitti C, Morandi A, Maffeis C, Licenziati MR, Manco M, Miraglia Del Giudice E, Baroni MG, Loche S, Tornese G, Tomat M, de Simone G. A new index to simplify the screening of hypertension in overweight or obese youth. Nutr Metab Cardiovasc Dis 2017; 27:830-835. [PMID: 28755804 DOI: 10.1016/j.numecd.2017.06.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND AND AIMS Hypertension (HTH) is a frequent complication in pediatric obesity. To simplify the screening of HTH in overweight/obese (Ow/Ob) youth, we compared the performance of a new index (High Blood Pressure index, HBPi) with respect to the standard criteria of the IV Report [systolic BP (SBP) and/or diastolic BP (DBP) ≥95th percentile for age, gender and height]. We also compared the performance of HBPi with other simplified indices such as the BP/height ratio and the absolute height-specific BP thresholds. Ten pediatrics' outpatient centers participating in the "CARdiometabolic risk factors in ITALY study" provided medical records of 4225 Ow/Ob children and adolescents (age 6-16 years). METHODS AND RESULTS Centers were divided into two groups: training set (TS) (n = 2204 participants) and validation set (VS) (n = 2021 participants). The simplified HBPi (mmHg) was: (SBP/2 + DBP/10) - age + (1 × female gender). In the TS, a HBPi value ≥57 mmHg in both children and adolescents had high sensitivity (0.89), specificity (0.97), positive (0.89) and negative (0.97) predictive values in classifying youth at high risk of HTN compared with the IV Report. In the VS, the HBPi showed a better performance than high levels of BP/height ratio and height-specific BP thresholds in classifying individuals at risk of HTN: area under curves 0.95 (0.93-0.96), 0.80 (0.78-0.82), 0.76 (0.74-0.79), respectively; specificities 0.95 (0.94-0.96), 0.69 (0.67-0.72), 0.60 (0.57-0.62), respectively. CONCLUSIONS HBPi, combining SBP and DBP, gender and age, may help pediatricians to implement HTN screening in Ow/Ob youth.
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Affiliation(s)
- P Di Bonito
- Department of Internal Medicine, "S. Maria delle Grazie", Pozzuoli Hospital, Naples, Italy
| | - G Valerio
- Department of Movement Sciences and Wellbeing, University of Naples Parthenope, Naples, Italy.
| | - L Pacifico
- Policlinico Umberto I Hospital, Sapienza University of Rome, Rome, Italy
| | - C Chiesa
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - C Invitti
- IRCCS Istituto Auxologico Italiano, Department of Medical Sciences & Rehabilitation, Milan, Italy
| | - A Morandi
- Pediatric Diabetes and Metabolic Disorders Unit, University Hospital of Verona, Verona, Italy
| | - C Maffeis
- Pediatric Diabetes and Metabolic Disorders Unit, University of Verona, Verona, Italy
| | - M R Licenziati
- Department of Pediatrics, AORN Santobono-Pausilipon, Naples, Italy
| | - M Manco
- IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - E Miraglia Del Giudice
- Department of Woman, Child and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - M G Baroni
- Endocrinology and Diabetes, Department of Medical Sciences, University of Cagliari, Cagliari, Italy; Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - S Loche
- Pediatric Endocrine Unit, Pediatric Hospital for Microcitemia, AO Brotzu, Cagliari, Italy
| | - G Tornese
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - M Tomat
- Pediatric Unit, AOU Udine, Udine, Italy
| | - G de Simone
- Hypertension Research Center, Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
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15
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Abstract
Hypertension and chronic kidney disease (CKD) have a significant impact on global morbidity and mortality. The Low Birth Weight and Nephron Number Working Group has prepared a consensus document aimed to address the relatively neglected issue for the developmental programming of hypertension and CKD. It emerged from a workshop held on April 2, 2016, including eminent internationally recognized experts in the field of obstetrics, neonatology, and nephrology. Through multidisciplinary engagement, the goal of the workshop was to highlight the association between fetal and childhood development and an increased risk of adult diseases, focusing on hypertension and CKD, and to suggest possible practical solutions for the future. The recommendations for action of the consensus workshop are the results of combined clinical experience, shared research expertise, and a review of the literature. They highlight the need to act early to prevent CKD and other related noncommunicable diseases later in life by reducing low birth weight, small for gestational age, prematurity, and low nephron numbers at birth through coordinated interventions. Meeting the current unmet needs would help to define the most cost-effective strategies and to optimize interventions to limit or interrupt the developmental programming cycle of CKD later in life, especially in the poorest part of the world.
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16
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Body composition and the monitoring of non-communicable chronic disease risk. GLOBAL HEALTH EPIDEMIOLOGY AND GENOMICS 2016; 1:e18. [PMID: 29868210 PMCID: PMC5870426 DOI: 10.1017/gheg.2016.9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 06/10/2016] [Accepted: 06/14/2016] [Indexed: 12/17/2022]
Abstract
There is a need for simple proxies of health status, in order to improve monitoring of chronic disease risk within and between populations, and to assess the efficacy of public health interventions as well as clinical management. This review discusses how, building on recent research findings, body composition outcomes may contribute to this effort. Traditionally, body mass index has been widely used as the primary index of nutritional status in children and adults, but it has several limitations. We propose that combining information on two generic traits, indexing both the ‘metabolic load’ that increases chronic non-communicable disease risk, and the homeostatic ‘metabolic capacity’ that protects against these diseases, offers a new opportunity to improve assessment of disease risk. Importantly, this approach may improve the ability to take into account ethnic variability in chronic disease risk. This approach could be applied using simple measurements readily carried out in the home or community, making it ideal for M-health and E-health monitoring strategies.
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17
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Ortega FB, Lavie CJ, Blair SN. Obesity and Cardiovascular Disease. Circ Res 2016; 118:1752-70. [DOI: 10.1161/circresaha.115.306883] [Citation(s) in RCA: 578] [Impact Index Per Article: 72.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 01/11/2016] [Indexed: 12/20/2022]
Abstract
The prevalence of obesity has increased worldwide over the past few decades. In 2013, the prevalence of obesity exceeded the 50% of the adult population in some countries from Oceania, North Africa, and Middle East. Lower but still alarmingly high prevalence was observed in North America (≈30%) and in Western Europe (≈20%). These figures are of serious concern because of the strong link between obesity and disease. In the present review, we summarize the current evidence on the relationship of obesity with cardiovascular disease (CVD), discussing how both the degree and the duration of obesity affect CVD. Although in the general population, obesity and, especially, severe obesity are consistently and strongly related with higher risk of CVD incidence and mortality, the one-size-fits-all approach should not be used with obesity. There are relevant factors largely affecting the CVD prognosis of obese individuals. In this context, we thoroughly discuss important concepts such as the fat-but-fit paradigm, the metabolically healthy but obese (MHO) phenotype and the obesity paradox in patients with CVD. About the MHO phenotype and its CVD prognosis, available data have provided mixed findings, what could be partially because of the adjustment or not for key confounders such as cardiorespiratory fitness, and to the lack of consensus on the MHO definition. In the present review, we propose a scientifically based harmonized definition of MHO, which will hopefully contribute to more comparable data in the future and a better understanding on the MHO subgroup and its CVD prognosis.
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Affiliation(s)
- Francisco B. Ortega
- From the PROFITH “PROmoting FITness and Health through physical activity” Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain (F.B.O.); Department of Biosciences and Nutrition at NOVUM, Karolinska Institutet, Huddinge, Sweden (F.B.O.); Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School-the University of Queensland School of Medicine, New Orleans, LA (C.J.L.); and
| | - Carl J. Lavie
- From the PROFITH “PROmoting FITness and Health through physical activity” Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain (F.B.O.); Department of Biosciences and Nutrition at NOVUM, Karolinska Institutet, Huddinge, Sweden (F.B.O.); Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School-the University of Queensland School of Medicine, New Orleans, LA (C.J.L.); and
| | - Steven N. Blair
- From the PROFITH “PROmoting FITness and Health through physical activity” Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain (F.B.O.); Department of Biosciences and Nutrition at NOVUM, Karolinska Institutet, Huddinge, Sweden (F.B.O.); Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School-the University of Queensland School of Medicine, New Orleans, LA (C.J.L.); and
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18
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Wells JCK, Yao P, Williams JE, Gayner R. Maternal investment, life-history strategy of the offspring and adult chronic disease risk in South Asian women in the UK. EVOLUTION MEDICINE AND PUBLIC HEALTH 2016; 2016:133-45. [PMID: 26988862 PMCID: PMC4826584 DOI: 10.1093/emph/eow011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/02/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND AND OBJECTIVES Patterns of development predict cardiovascular disease (CVD) risk, and ethnic differences therein, but it remains unclear why apparently 'adaptive plasticity' in early life should generate health costs in later life. We hypothesized that offspring receiving low maternal investment during fetal life, the primary period of organogenesis, should predict a shorter reproductive career and develop a fast life-history strategy, prioritizing reproduction over growth and homeostatic maintenance. METHODOLOGY We studied 58 young adult South Asian women living in the UK, a group with high susceptibility to CVD. We obtained gestational age, birth weight (BW) and menarcheal age by recall and measured anthropometry, body composition, resting metabolic rate (RMR) and blood pressure (BP). RESULTS BW and gestational age were inversely associated with menarcheal age, indicating that lower maternal investment is associated with faster maturation. Menarcheal age was positively associated with height but inversely with adiposity, indicating that rapid maturation prioritizes lipid stores over somatic growth. BW was inversely associated with BP, whereas adiposity was positively associated, indicating that lower maternal investment reduces BP homeostasis. BW was positively associated with RMR, whereas menarche was inversely associated, indicating that maternal investment influences adult metabolism. CONCLUSIONS AND IMPLICATIONS Supporting our hypothesis, low maternal investment promoted faster life histories, demonstrated by earlier menarche, reduced growth and elevated adiposity. These traits were associated with poorer BP regulation. This is the first study demonstrating strategic adjustment of the balance between reproduction and metabolic health in response to the level of maternal investment during fetal life.
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Affiliation(s)
- Jonathan C K Wells
- Childhood Nutrition Research Centre, UCL Institute of Child Health, 30 Guilford Street, London, WC 1N 1EH, UK
| | - Pallas Yao
- Childhood Nutrition Research Centre, UCL Institute of Child Health, 30 Guilford Street, London, WC 1N 1EH, UK
| | - Jane E Williams
- Childhood Nutrition Research Centre, UCL Institute of Child Health, 30 Guilford Street, London, WC 1N 1EH, UK
| | - Rebecca Gayner
- Childhood Nutrition Research Centre, UCL Institute of Child Health, 30 Guilford Street, London, WC 1N 1EH, UK
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Ortega FB, Sui X, Lavie CJ, Blair SN. Body Mass Index, the Most Widely Used But Also Widely Criticized Index: Would a Criterion Standard Measure of Total Body Fat Be a Better Predictor of Cardiovascular Disease Mortality? Mayo Clin Proc 2016; 91:443-55. [PMID: 26948431 PMCID: PMC4821662 DOI: 10.1016/j.mayocp.2016.01.008] [Citation(s) in RCA: 186] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 12/14/2015] [Accepted: 01/12/2016] [Indexed: 12/22/2022]
Abstract
OBJECTIVES To examine whether an accurate measure (using a criterion standard method) of total body fat would be a better predictor of cardiovascular disease (CVD) mortality than body mass index (BMI). PARTICIPANTS AND METHODS A total of 60,335 participants were examined between January 1, 1979, and December 31, 2003, and then followed-up for a mean follow-up period of 15.2 years. Body mass index was estimated using standard procedures. Body composition indices (ie, body fat percentage [BF%], fat mass index [FMI], fat-free mass [FFM], and FFM index [FFMI]) were derived from either skinfold thicknesses or hydrostatic weighing. For exact comparisons, the indices studied were categorized identically using sex-specific percentiles. RESULTS Compared with a medium BMI, a very high BMI was associated with a hazard ratio (HR) of 2.7 (95% CI, 2.1-3.3) for CVD mortality, which was a stronger association than for BF% or FMI (ie, HR, 1.6; 95% CI, 1.3-1.9 and HR, 2.2; 95% CI, 1.8-2.7, respectively). Compared with a medium FFMI, a very high FFMI was associated with an HR of 2.2 (95% CI, 1.7-2.7) for CVD mortality, with these estimates being markedly smaller for FFM (ie, HR, 1.2; 95% CI, 0.9-1.6). When the analyses were restricted only to the sample assessed with hydrostatic weighing (N=29,959, 51.7%), the results were similar, with even slightly larger differences in favor of BMI (ie, HR, 3.0; 95% CI, 2.2-4.0) compared with BF% and FMI (ie, HR, 1.5; 95% CI, 1.2-1.9 and HR, 2.1; 95% CI, 1.6-2.7, respectively). We estimated Harrell's c-index as an indicator of discriminating/predictive ability of these models and observed that the c-index for models including BMI was significantly higher than that for models including BF% or FMI (P<.005 for all). CONCLUSION The simple and inexpensive measure of BMI can be as clinically important as, or even more than, total adiposity measures assessed using accurate, complex, and expensive methods. Physiological explanations for these findings are discussed.
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Affiliation(s)
- Francisco B Ortega
- PROFITH "PROmoting FITness and Health through physical activity" Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain; Department of Biosciences and Nutrition at NOVUM, Karolinska Institutet, Huddinge, Sweden.
| | - Xuemei Sui
- Department of Exercise Science, University of South Carolina, Columbia
| | - Carl J Lavie
- Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School, The University of Queensland School of Medicine, New Orleans, LA
| | - Steven N Blair
- Department of Exercise Science, University of South Carolina, Columbia; Department of Epidemiology and Biostatistics, University of South Carolina, Columbia
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Wells JCK, Devakumar D, Grijalva-Eternod CS, Manandhar DS, Costello A, Osrin D. Blood pressure and the capacity-load model in 8-year-old children from Nepal: Testing the contributions of kidney size and intergenerational effects. Am J Hum Biol 2016; 28:555-65. [PMID: 26848931 PMCID: PMC7611548 DOI: 10.1002/ajhb.22829] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 10/08/2015] [Accepted: 12/21/2015] [Indexed: 12/13/2022] Open
Abstract
Objectives Growth patterns in early life are increasingly linked with subsequent cardio-metabolic risk, but the underlying mechanisms require elucidation. We have developed a theoretical model of blood pressure, treating it as a function of homeostatic metabolic capacity, and antagonistic metabolic load. We sought to differentiate prenatal and postnatal components of metabolic capacity, and to identify intergenerational contributions to offspring capacity and load. Methods We followed up at 8 years a cohort of children originally recruited into a randomized trial of maternal micronutrient supplementation in pregnancy. Maternal anthropometry was measured at recruitment. Offspring anthropometry was measured at birth, 2 years and 8 years. Offspring blood pressure, kidney size, and body composition were measured at 8 years. Regression analysis was used to investigate potential associations of maternal phenotype, birth phenotype, and current body composition with kidney size and blood pressure. Results Blood pressure was positively associated with body fat, but negatively associated with birth weight and relative leg length. Kidney size was positively associated with birth weight but not with relative leg length. Adjusting for adiposity, blood pressure was independently negatively associated with birth weight, relative leg length, and kidney length. Maternal height and BMI predicted offspring size at birth and at 8 years, but not blood pressure. Conclusions Our data provide support for the capacity-load model of blood pressure in Nepalese children. Fetal and postnatal growth and kidney dimensions all contribute to metabolic capacity. Maternal phenotype contributed to offspring capacity and load, but these associations did not propagate to blood pressure.
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Affiliation(s)
- Jonathan C K Wells
- Childhood Nutrition Research Centre, UCL Institute of Child Health, London, United Kingdom
| | | | | | | | | | - David Osrin
- UCL Institute for Global Health, London, United Kingdom
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Grijalva-Eternod CS, Wells JCK, Girma T, Kæstel P, Admassu B, Friis H, Andersen GS. Midupper arm circumference and weight-for-length z scores have different associations with body composition: evidence from a cohort of Ethiopian infants. Am J Clin Nutr 2015; 102:593-9. [PMID: 26224296 DOI: 10.3945/ajcn.114.106419] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 07/07/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND A midupper arm circumference (MUAC) <115 mm and weight-for-height z score (WHZ) or weight-for-length z score (WLZ) less than -3, all of which are recommended to identify severe wasting in children, often identify different children. The reasons behind this poor agreement are not well understood. OBJECTIVE We investigated the association between these 2 anthropometric indexes and body composition to help understand why they identify different children as wasted. DESIGN We analyzed weight, length, MUAC, fat-mass (FM), and fat-free mass (FFM) data from 2470 measurements from 595 healthy Ethiopian infants obtained at birth and at 1.5, 2.5, 3.5, 4.5, and 6 mo of age. We derived WLZs by using 2006 WHO growth standards. We derived length-adjusted FM and FFM values as unexplained residuals after regressing each FM and FFM against length. We used a correlation analysis to assess associations between length, FFM, and FM (adjusted and nonadjusted for length) and the MUAC and WLZ and a multivariable regression analysis to assess the independent variability of length and length-adjusted FM and FFM with either the MUAC or the WLZ as the outcome. RESULTS At all ages, length showed consistently strong positive correlations with the MUAC but not with the WLZ. Adjustment for length reduced observed correlation coefficients of FM and FFM with the MUAC but increased those for the WLZ. At all ages, both length-adjusted FM and FFM showed an independent association with the WLZ and MUAC with higher regression coefficients for the WLZ. Conversely, length showed greater regression coefficients for the MUAC. At all ages, the MUAC was shown to be more influenced than was the WLZ by the FM variability relative to the FFM variability. CONCLUSIONS The MUAC and WLZ have different associations with body composition, and length influences these associations differently. Our results suggest that the WLZ is a good marker of tissue masses independent of length. The MUAC acts more as a composite index of poor growth indexing jointly tissue masses and length. This trial was registered at www.controlled-trials.com as ISRCTN46718296.
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Affiliation(s)
| | - Jonathan C K Wells
- Childhood Nutrition Research Centre, UCL Institute of Child Health, London, United Kingdom
| | | | - Pernille Kæstel
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark; and
| | - Bitiya Admassu
- Population and Family Health, Jimma University, Jimma, Ethiopia
| | - Henrik Friis
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark; and
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Impact of birth parameters and early life growth patterns on retinal microvascular structure in children. J Hypertens 2015; 33:1429-37. [DOI: 10.1097/hjh.0000000000000561] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Montagnese C, Nutile T, Marphatia AA, Grijalva-Eternod CS, Siervo M, Ciullo M, Wells JC. Body composition, leg length and blood pressure in a rural Italian population: a test of the capacity-load model. Nutr Metab Cardiovasc Dis 2014; 24:1204-1212. [PMID: 24984827 DOI: 10.1016/j.numecd.2014.05.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/30/2014] [Accepted: 05/13/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIMS Whereas adult weight or body mass index (BMI) are directly associated with blood pressure (BP), birth weight is inversely associated with BP. The scenario for height is more complex, as both tall and short stature have been associated with higher BP. We used a theoretical model treating sitting height (SH) and tissue masses (fat mass, lean mass) as components of metabolic load, and leg length (LL) as a marker of homeostatic metabolic capacity. We predicted that decreased capacity and increased load would be independently associated with increased BP.. METHODS AND RESULTS Anthropometry, body composition (bio-electrical impedance analysis) and BP were measured in 601 adults (228 male) aged 20-91 years from three hill villages in southern Italy. Multiple regression analysis was used to investigate associations of body composition and anthropometry with BP. Adjusting for age, systolic BP (SBP) was associated with lean mass in males, and with adiposity in females, whereas diastolic BP (DBP) was associated with fat mass in both sexes. Associations of LL and SH with BP were in opposite directions. LL was inversely associated with SBP and DBP in males, with a similar trend evident in females. SH was directly associated with SBP and DBP in females, and with DBP in males. CONCLUSIONS Consistent with our theoretical model, metabolic load is associated with increased BP, though differently between the sexes, whereas metabolic capacity is independently associated with lower BP. Our findings suggest that early growth improves hemodynamic tolerance of high metabolic load in adulthood..
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Affiliation(s)
- C Montagnese
- Childhood Nutrition Research Centre, UCL Institute of Child Health, London, UK; Institute of Genetics and Biophysics, "A. Buzzati-Traverso" CNR, Napoli, Italy
| | - T Nutile
- Institute of Genetics and Biophysics, "A. Buzzati-Traverso" CNR, Napoli, Italy
| | - A A Marphatia
- Department of Geography, University of Cambridge, UK
| | | | - M Siervo
- Human Nutrition Research Centre, Institute for Ageing and Health, Newcastle University, UK
| | - M Ciullo
- Institute of Genetics and Biophysics, "A. Buzzati-Traverso" CNR, Napoli, Italy.
| | - J C Wells
- Childhood Nutrition Research Centre, UCL Institute of Child Health, London, UK
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Body composition indices of a load-capacity model: gender- and BMI-specific reference curves. Public Health Nutr 2014; 18:1245-54. [PMID: 25221994 DOI: 10.1017/s1368980014001918] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Fat mass (FM) and fat-free mass (FFM) are frequently measured to define body composition phenotypes. The load-capacity model integrates the effects of both FM and FFM to improve disease-risk prediction. We aimed to derive age-, gender- and BMI-specific reference curves of load-capacity model indices in an adult population (≥18 years). DESIGN Cross-sectional study. Dual-energy X-ray absorptiometry was used to measure FM, FFM, appendicular skeletal muscle mass (ASM) and truncal fat mass (TrFM). Two metabolic load-capacity indices were calculated: ratio of FM (kg) to FFM (kg) and ratio of TrFM (kg) to ASM (kg). Age-standardised reference curves, stratified by gender and BMI (<25.0 kg/m2, 25.0-29.9 kg/m2, ≥30.0 kg/m2), were constructed using an LMS approach. Percentiles of the reference curves were 5th, 15th, 25th, 50th, 75th, 85th and 95th. SETTING Secondary analysis of data from the 1999-2004 National Health and Nutrition Examination Survey (NHANES). SUBJECTS The population included 6580 females and 6656 males. RESULTS The unweighted proportions of obesity in males and females were 25.5 % and 34.7 %, respectively. The average values of both FM:FFM and TrFM:ASM were greater in female and obese subjects. Gender and BMI influenced the shape of the association of age with FM:FFM and TrFM:ASM, as a curvilinear relationship was observed in female and obese subjects. Menopause appeared to modify the steepness of the reference curves of both indices. CONCLUSIONS This is a novel risk-stratification approach integrating the effects of high adiposity and low muscle mass which may be particularly useful to identify cases of sarcopenic obesity and improve disease-risk prediction.
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Wells JCK. Commentary: The paradox of body mass index in obesity assessment: not a good index of adiposity, but not a bad index of cardio-metabolic risk. Int J Epidemiol 2014; 43:672-4. [PMID: 24691953 PMCID: PMC4052141 DOI: 10.1093/ije/dyu060] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Jonathan C K Wells
- Childhood Nutrition Research Centre, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK. E-mail:
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Wells JCK, Cole TJ. Height, adiposity and hormonal cardiovascular risk markers in childhood: how to partition the associations? Int J Obes (Lond) 2014; 38:930-5. [PMID: 24509503 PMCID: PMC4088335 DOI: 10.1038/ijo.2014.24] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 01/14/2014] [Accepted: 01/17/2014] [Indexed: 01/19/2023]
Abstract
Objective: Obesity is associated with rapid growth during childhood. There is uncertainty over how to adjust for body size, when using adiposity as a proxy for cardiovascular risk. We studied associations of height, body composition (by dual-energy X-ray absorptiometry) and cardiovascular risk markers (insulin resistance (IR), leptin) in children. Methods: Using partial correlations in 172 children aged 7–12 years, we investigated associations of (a) fat mass with IR or leptin, adjusting for height or lean mass, and (b) height or lean mass with IR or leptin, adjusting for fat mass. Analyses were conducted both cross-sectionally at each age, and for changes between 7 and 12 years. Results: Height, fat mass, lean mass, IR and leptin were all inter-correlated at all ages. Although fat mass was strongly associated with IR and leptin, height was independently negatively associated with leptin (whole sample, adjusting for age: boys r=−0.12, girls r=−0.13; P<0.001). Independent of adiposity, height was also associated with insulin IR (whole sample, adjusting for age: boys r=0.11, girls r=0.20; P<0.001). When analysed by year of age, these associations tended to remain significant at older ages. Change in height from 7 to 12 years was also associated with change in IR (boys: r=0.18, P<0.05; girls: r=0.34, P<0.01), independently of change in adiposity, with similar findings for lean mass. Conclusions: During childhood, markers of cardiovascular risk have a complex profile, associated with growth as well as fat accumulation. Taller and faster-growing children have elevated risk markers, independently of their adiposity. These findings have implications for the interpretation of pediatric indices of adiposity that aim to adjust for body size. Adiposity indices that perform best at summarizing metabolic risk may not be those that perform best at understanding the developmental aetiology of risk.
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Affiliation(s)
- J C K Wells
- Childhood Nutrition Research Centre, UCL Institute of Child Health, London, UK
| | - T J Cole
- Centre for Paediatric Epidemiology and Biostatistics, UCL Institute of Child Health, University College, London, UK
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Association of birth order with cardiovascular disease risk factors in young adulthood: a study of one million Swedish men. PLoS One 2013; 8:e63361. [PMID: 23696817 PMCID: PMC3656047 DOI: 10.1371/journal.pone.0063361] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/02/2013] [Indexed: 12/18/2022] Open
Abstract
Background Birth order has been suggested to be linked to several cardiovascular disease (CVD) risk factors, but the evidence is still inconsistent. We aim to determine the associations of birth order with body mass index (BMI), muscle strength and blood pressure. Further we will analyse whether these relationships are affected by family characteristics. Methods BMI, elbow flexion, hand grip and knee extension strength and systolic and diastolic blood pressure were measured at conscription examination in 1 065 710 Swedish young men born between 1951 and 1975. The data were analysed using linear multivariate and fixed effects regression models; the latter compare siblings and account for genetic and social factors shared by brothers. Results Fixed effect regression analysis showed that birth order was inversely associated with BMI: second and third born had 0.8% and 1.1% (p<0.001) lower BMI than first-born, respectively. The association pattern differed among muscle strengths. After adjustment for BMI, first-born presented lower elbow flexion and hand grip strength than second-born (−5.9 N and −3.8 N, respectively, p<0.001). Knee extension strength was inversely related to birth order though not always significantly. The association between birth order and blood pressure was not significant. Conclusions Birth order is negatively associated with BMI and knee extension strength, positively with elbow flexion and hand grip strength, and is not associated with blood pressure among young men. Although the effects are small, the link between birth order and some CVD risk factors is already detectable in young adulthood.
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