3,122 results match your criteria American Journal Of Human Biology[Journal]


Scoliosis and skeletal muscle mass are strongly associated with low back pain-related disability in humans: An evolutionary anthropology point of view.

Am J Hum Biol 2022 May 9:e23757. Epub 2022 May 9.

Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.

Objectives: To clarify the potential risk factors and etiology of low back pain (LBP)-related disability, including structural changes of the spine (spinal scoliosis) and body composition components in a population with a high prevalence of LBP.

Methods: In this cross-sectional study, two self-reported validated questionnaires were used to collect back pain and disability data in an ethnically homogeneous family-based population sample (N = 1078). The scoliosis angle of trunk rotation was measured by a scoliometer on three spinal levels while the patient was bent forward. Read More

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Changes in the prevalence of undernutrition, overweight and obesity in children and adolescents from Buenos Aires, Mendoza, and Misiones provinces (Argentina) over the last two decades.

Am J Hum Biol 2022 May 2:e23755. Epub 2022 May 2.

Laboratorio de Investigaciones en Ontogenia y Adaptación (LINOA), Facultad de Ciencias Naturales y Museo (FCNyM), Universidad Nacional de La Plata (UNLP), La Plata, Argentina.

Objectives: The aim of this study was to determine changes in the prevalence of undernutrition, overweight and obesity in Argentine children and adolescents over the last two decades, and analyze their relationship with family socioeconomic conditions.

Methods: We compared data in two cross-sectional studies (C) of schoolchildren (n: 4971) aged 4 to 13 years from three provinces: Buenos Aires, Mendoza and Misiones. C1 was carried out between 2005 and 2009 and C2 between 2010 and 2019. Read More

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The role of body height as a co-factor of excess weight in Switzerland.

Am J Hum Biol 2022 Apr 30:e23754. Epub 2022 Apr 30.

Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, University Hospital and University of Bern, Bern, Switzerland.

Object: Excess weight (Body Mass Index [BMI] ≥25.0 kg/m ) is a major health issue worldwide, including in Switzerland. For high-income countries, little attention has been paid to body height in context of excess weight. Read More

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The circadian rhythm of calcium and bone homeostasis in Maasai.

Am J Hum Biol 2022 Apr 28:e23756. Epub 2022 Apr 28.

Diabetes and Bone-Metabolic Research Unit, Department of Endocrinology, Rigshospitalet, Copenhagen, Denmark.

Objectives: Ethnic groups differ in prevalence of calcium-related diseases. Differences in the physiology and the endogenous circadian rhythm (CR) of calcium and bone homeostasis may play a role. Thus, we aimed to investigate details of CR pattern in calcium and bone homeostasis in East African Maasai. Read More

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Evaluation of dual-energy X-ray absorptiometry compared to magnetic resonance imaging for collecting measurements of the human bony pelvis.

Am J Hum Biol 2022 Apr 23:e23753. Epub 2022 Apr 23.

Population, Policy, and Practice Research and Teaching Department, Childhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child Health, London, UK.

Objectives: Imaging methods to measure the human pelvis in vivo provide opportunities to better understand pelvic variation and adaptation. Magnetic resonance imaging (MRI) provides high-resolution images, but is more expensive than dual-energy X-ray absorptiometry (DXA). We sought to compare pelvic breadth measurements collected from the same individuals using both methods, to investigate if there are systematic differences in pelvic measurement between these imaging methods. Read More

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The relative contributions of adiposity and activity levels to physical performance in children with excess weight.

Am J Hum Biol 2022 Apr 19:e23752. Epub 2022 Apr 19.

Department of Child, Family, and Population Health Nursing, University of Washington, Seattle, Washington, USA.

Objective: This study examined predictors of physical performance, a key aspect of quality of life, in children with excess weight.

Methods: Participants were 269 children aged 6-12 years with a body mass index above the 85th percentile. Children completed a standardized physical performance task capturing lower extremity strength, balance, and gait speed. Read More

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Testosterone deficiency and the risk of anemia: A propensity score-matched analysis.

Am J Hum Biol 2022 Apr 10:e23751. Epub 2022 Apr 10.

Department of Urology, National Police Hospital, Seoul, South Korea.

Objective: There are little data on the endogenous testosterone effect on hemoglobin or hematocrit. Moreover, these data are limited by a cross-sectional study design, a small participant number, and no adjustment for confounding factors. Therefore, the present study was conducted to address the aforementioned limitations of previous studies using a large dataset and propensity score matched analysis. Read More

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Nutritional status, intestinal parasitic infections, and socio-environmental conditions in Mbyá-guaraní children: The current situation in communities in central Misiones, Argentina.

Am J Hum Biol 2022 Apr 7:e23749. Epub 2022 Apr 7.

Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), Buenos Aires, Argentina.

Objectives: Our previous research in Mbyá-guaraní communities of central Misiones showed high levels of growth stunting and intestinal parasites in children, as well as associations between these variables and deficient sanitary conditions. New studies were necessary to update the present health status of the previously studied Mbyá populations after around two decades. Therefore, we evaluated the current nutritional status, intestinal parasites, and socio-environmental conditions among Mbyá-guaraní children from these communities. Read More

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A preliminary analysis of the secondary sex ratio decline after the COVID-19 pandemic in Japan.

Am J Hum Biol 2022 Apr 6:eajhb. Epub 2022 Apr 6.

Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.

Objectives: The secondary sex ratio (SSR, i.e., the number of male births per 100 female births) has long been proposed as a sentinel health indicator. Read More

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Transient refugees' social support, mental health, and physiological markers: Evidence from Serbian asylum centers.

Am J Hum Biol 2022 Mar 29:e23747. Epub 2022 Mar 29.

Department of Anthropology, University of Notre Dame, Notre Dame, Indiana, USA.

Objectives: Refugees seeking safety across international borders are often exposed to a wide breadth of psychosocially stressful experiences that may fracture existing sources of social support and impair the generation of new social relationships, with implications for their long-term health and resilience. Using data from recently settled refugees in two asylum centers in Serbia, we examined the associations between social support, mental health, and physiological markers.

Methods: In this mixed-method study of refugees (age 18-50 years, n = 76), we collected key socio-demographic information and conducted semi-structured interviews about refugees' journey and stay in Serbia, trauma/loss, and their sources of social support. Read More

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Secular changes in the waist, hips circumferences and selected associated indicators, among preschool children from Kraków (Poland), between 1983 and 2018.

Am J Hum Biol 2022 Mar 25:e23748. Epub 2022 Mar 25.

Department of Anthropology, Faculty of Physical Education and Sport, University of Physical Education in Kraków, Kraków, Poland.

Objectives: Waist circumference and derived indicators are great for measuring the risk of abdominal obesity. The main aim of the study was to assess the changes in the waist, hips circumferences and selected associated indicators, among preschool children (3-7 years of age) from Kraków, Poland, between 1983, 2008 and 2018.

Methods: The research was conducted in randomly selected kindergarten in Krakow (Poland). Read More

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Insulin sensitivity as a predictor of longitudinal changes on body mass index in Brazilian adolescents.

Am J Hum Biol 2022 Mar 16:e23745. Epub 2022 Mar 16.

Department of Epidemiology, Institute of Social Medicine, State University of Rio de Janeiro, Rio de Janeiro, Brazil.

Objectives: We aimed to investigate the effect of insulin sensitivity and insulin resistance status at baseline on longitudinal body mass index, and the possible effect modification by sex.

Methods: This is a secondary analysis of a randomized intervention community trial, in which a subgroup of 84 adolescents, aged between 10 and 12 years, were analyzed. Body weight, height, and body mass index (BMI) were determined before and after 8 months of follow-up. Read More

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A biosocial return to race? A cautionary view for the postgenomic era.

Am J Hum Biol 2022 Mar 11:e23742. Epub 2022 Mar 11.

Department of Anthropology and Institute for Policy Research, Northwestern University, Evanston, Illinois, USA.

Recent studies demonstrating epigenetic and developmental sensitivity to early environments, as exemplified by fields like the Developmental Origins of Health and Disease (DOHaD) and environmental epigenetics, are bringing new data and models to bear on debates about race, genetics, and society. Here, we first survey the historical prominence of models of environmental determinism in early formulations of racial thinking to illustrate how notions of direct environmental effects on bodies have been used to naturalize racial hierarchy and inequalities in the past. Next, we conduct a scoping review of postgenomic work in environmental epigenetics and DOHaD that looks at the role of race/ethnicity in human health (2000-2021). Read More

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The association between the 2D:4D ratio and offspring sex at birth: A cross-sectional study in Ghana.

Am J Hum Biol 2022 Mar 10:e23744. Epub 2022 Mar 10.

Department of Biomedical Laboratory Science, School of Allied Health Sciences, University for Development Studies, Tamale, Ghana.

Objectives: The 2D:4D ratio is the putative marker of prenatal androgen exposure. Low maternal 2D:4D ratio has been associated with high or male-biased secondary sex ratio. Hitherto, there has not been any study in Ghana regarding the maternal 2D:4D ratio and sex ratio at birth. Read More

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An approach on the migratory processes in the north of Chile based on Y chromosome analysis.

Am J Hum Biol 2022 Mar 9:e23736. Epub 2022 Mar 9.

Departamento de Antropología, Facultad de Ciencias Sociales, Universidad de Chile, Santiago, Chile.

Objectives: Northern Chile is an area characterized by a complex cultural and demographic trajectory. During the last few centuries, this complex trajectory has become the destination of intra- and intercontinental migratory waves. In this study, we analyzed the Y chromosome to evaluate how migratory and admixture patterns have affected the genetic composition of the populations in northern Chile compared with other populations of the country. Read More

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Current Officers and Members of Standing Committees.

Authors:

Am J Hum Biol 2022 03 8;34 Suppl 2:e23739. Epub 2022 Mar 8.

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Obese individuals do not underreport dietary intake to a greater extent than nonobese individuals when data are allometrically-scaled.

Am J Hum Biol 2022 Mar 8:e23743. Epub 2022 Mar 8.

School of Sport, Rehabilitation, and Exercise Sciences, University of Essex, Essex, UK.

Objective: The aim of this study was to assess the extent of misreporting in obese and nonobese adults on an absolute, ratio-scaled, and allometrically-scaled basis.

Method: Self-reported daily energy intake (EI) was compared with total energy expenditure (TEE) in 221 adults (106 male, 115 female; age 53 ± 17 years, stature 1.68 ± 0. Read More

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Ancient DNA analysis reveals temporal and geographical patterns of mitochondrial diversity in pre-Hispanic populations from Central Argentina.

Am J Hum Biol 2022 Mar 3:e23733. Epub 2022 Mar 3.

Universidad Nacional de Córdoba, Facultad de Filosofía y Humanidades, Departamento de Antropología, Córdoba, Argentina.

Objectives: The study of the ancient populations of Central Argentina has a crucial importance for our understanding of the evolutionary processes in the Southern Cone of South America, given its geographic position as a crossroads. Therefore, the aim of this study is to evaluate the temporal and geographical patterns of genetic variation among the groups that inhabited the current territory of Córdoba Province during the Middle and Late Holocene.

Methods: We analyzed the mitochondrial haplogroups of 74 individuals and 46 Hypervariable Region I (HVR-I) sequences, both novel and previously reported, from archeological populations of the eastern Plains and western Sierras regions of the province of Córdoba. Read More

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Longitudinal association of biological maturation with physical activity behaviors in girls transitioning from 5th to 7th grade.

Am J Hum Biol 2022 Feb 25:e23737. Epub 2022 Feb 25.

Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, South Carolina, USA.

Introduction: This longitudinal study determined if social cognitive variables influence physical activity in girls stratified on the basis of maturity status.

Methods: Participants attended South Carolina public schools (Mage in 5th grade = 11.1 years) and included a cohort of 529 girls who provided physical activity data in the 5th grade and in 6th and/or 7th grade. Read More

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February 2022

MC1R diversity and its role in skin pigmentation variation in West Maharashtra, India.

Am J Hum Biol 2022 Feb 21:e23734. Epub 2022 Feb 21.

Department of Zoology, Savitribai Phule Pune University, Pune, India.

Objectives: MC1R polymorphisms have been reported to be under a selective constraint in populations inhabiting high UVR regions such as Africans; however, these patterns are not consistent. Here we analyze the MC1R gene in West Maharashtra, India to see if sequence diversity corresponds to their diverse pigmentary profiles and if MC1R is constrained in dark skinned tribal as compared to lighter skinned caste populations.

Methods: A 2648 bp region of this gene was sequenced in 102 individuals and the data was compared for π, ϴ diversity indices. Read More

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February 2022

Is age of menarche directly related to vitamin D levels?

Am J Hum Biol 2022 Feb 18:e23731. Epub 2022 Feb 18.

School of Community & Environmental Health, College of Health Sciences, Old Dominion University, Norfolk, Virginia, USA.

Introduction: Very few studies have examined the direct link between age of menarche and vitamin D level and controversial results have been reported. This study aimed to investigate the association between vitamin D and age of menarche in a group of adolescent girls in an area with plenty of sunshine.

Methods: At baseline, data were collected on 722 middle schoolgirls that were randomly selected by probability proportional to size sampling method. Read More

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February 2022

Development of birthweight and length for gestational age and sex references in Yucatan, Mexico.

Am J Hum Biol 2022 Feb 18:e23732. Epub 2022 Feb 18.

Departamento de Ecología Humana, Cinvestav-Mérida, Mérida, Mexico.

Objective: To develop sex- and gestational age specific reference percentiles and curves for birth weight and length for Yucatec neonates using data from birth registers of infants born during 2015-2019.

Material And Methods: Observational, descriptive, epidemiologic study in a 5-year period including every registered birth in the state of Yucatan, Mexico using birth registries. A total of 158 432 live, physically healthy singletons (76 442 females and 81 990 males) between 25 and 42 weeks of gestation were included in the analysis. Read More

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February 2022

Pathologizing normal height or identifying chronic malnutrition: Public health concerns of calling stunting normal.

Am J Hum Biol 2022 May 16;34(5):e23735. Epub 2022 Feb 16.

Department of Community Medicine, Jawaharlal Nehru Medical College & Hospital, Aligarh Muslim University (AMU), Aligarh, India.

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Brown adipose tissue thermogenesis among young adults in northeastern Siberia and Midwest United States and its relationship with other biological adaptations to cold climates.

Am J Hum Biol 2022 Feb 13:e23723. Epub 2022 Feb 13.

Department of Anthropology, Northwestern University, Evanston, Illinois, USA.

Objectives: Recent research suggests that brown adipose tissue (BAT) plays a functional role in non-shivering thermogenesis; however, few studies have examined population variation in BAT or its relationship with other mechanisms of adaptation to cold stress. This study characterized BAT thermogenesis and other adaptive responses to low temperatures among Indigenous Siberian young adults and young adults living near Chicago, IL.

Materials And Methods: We recruited 72 Yakut participants (42 females; 30 males) and 54 participants in Evanston, IL (40 females; 14 males). Read More

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February 2022

A critical biocultural approach to early growth in the United States.

Am J Hum Biol 2022 Feb 5:e23726. Epub 2022 Feb 5.

Department of Anthropology, University of South Florida, Tampa, Florida, USA.

Objectives: A critical biocultural anthropology seeks to link perspectives from social theory and ethnography to human biology. In the United States (U.S. Read More

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February 2022

Food store accessibility affects nutritional intake through shopping frequency and food intake in middle-aged to older adults in rural Nagasaki, Japan.

Am J Hum Biol 2022 Feb 5:e23725. Epub 2022 Feb 5.

Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.

Objectives: The food environment is an important determinant of dietary and nutritional intake, but studies thus far have reported mixed results. We examined associations between food store accessibility and nutritional intake among middle-aged to older adults in rural Japan using data from a questionnaire survey of national health insurance enrollees.

Methods: The survey was conducted in Nagasaki, Japan, for individuals aged 40-74 years. Read More

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February 2022

Ethnic and sociodemographic correlates of developmental dysplasia of the hip in newborns from Yucatan, Mexico.

Am J Hum Biol 2022 Jan 28:e23724. Epub 2022 Jan 28.

Centro de Investigaciones Silvio Zavala, Universidad Modelo, Carretera a Cholul, 200 mts. después del periférico, Merida, Yucatan, Mexico.

Objectives: To provide an insight of the incidence of congenital developmental dysplasia of the hip in newborns from Yucatan born between 2015 and 2019 and analyze its association with maternal sociodemographic characteristics and neonatal, pregnancy and delivery related aspects.

Methods: Retrospective, population-based study from Birth Registries database in Yucatan, Mexico between 2015 and 2019. Presence of hip dysplasia was described and analyzed considering three aspects (I) Maternal information (II) Pregnancy and birth (III) Neonatal examination. Read More

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January 2022

Nutrition, obesity, and dental development in young adolescents in Chicago.

Am J Hum Biol 2022 Jan 22:e23721. Epub 2022 Jan 22.

Department of Orthodontics, University of Illinois Chicago, Chicago, Illinois, USA.

Objectives: Childhood obesity is a systemic disease with multiple downstream consequences, including shifts in timing of growth and development. It has been documented that children with high body mass index (BMI) show accelerated timing of dental development, but the mechanism for this acceleration is unknown. Prior work has suggested that inflammation and/or nutrition may play a role. Read More

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January 2022

A longitudinal study of handgrip strength asymmetry.

Am J Hum Biol 2022 Jan 22:e23722. Epub 2022 Jan 22.

Graduate School of Health and Sports Science, Juntendo University, Inzai, Japan.

Objective: The previous results from cross-sectional studies indicate that there could be alterations across time in handgrip strength (HGS) asymmetry. One way to investigate this is to test the same children multiple times. Therefore, we aimed to evaluate the laterality of HGS in healthy young children at two different time points separated by a year. Read More

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January 2022