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body composition and DXA

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https://www.readbyqxmd.com/read/29788444/norepinephrine-and-thyroxine-are-predictors-of-fat-mass-gain-in-humans-with-cold-induced-brown-adipose-tissue-activation
#1
Brittany Begaye, Paolo Piaggi, Marie S Thearle, Kaitlyn Haskie, Mary Walter, Mathias Schlögl, Susan Bonfiglio, Jonathan Krakoff, Karyne L Vinales
Context: In healthy adults with detectable cold-induced brown fat activation (CIBA), the relationships between sympathetic nervous system (SNS) or thyroid activity during energy balance (EBL) with CIBA and body composition change are undetermined. Objective: To investigate the relationships between CIBA and thermoneutral catecholamines and thyroid hormones measured during EBL and to determine if CIBA, catecholamines, or thyroid hormones predict body composition changes...
May 16, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29777231/dietary-protein-intake-in-school-age-children-and-detailed-measures-of-body-composition-the-generation-r-study
#2
Vincent Jen, Leonidas G Karagounis, Vincent W V Jaddoe, Oscar H Franco, Trudy Voortman
BACKGROUND: A high-protein diet in infancy increases the risk of obesity, but the effects of dietary protein intake in mid-childhood on body composition are unclear. Therefore, we studied associations of protein intake (total, animal and plant-sourced) at 8 years of age with anthropometric measures and body composition up to age 10 years. METHODS: We included 3991 children of the Generation R Study, a prospective cohort in the Netherlands. Dietary protein intake was assessed at 8 years of age using a food-frequency questionnaire and is expressed in energy percentage (E%)...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29757054/pre-season-body-composition-adaptations-in-elite-caucasian-and-polynesian-rugby-union-athletes
#3
Adam J Zemski, Shelley E Keating, Elizabeth M Broad, Damian J March, Karen Hind, Gary J Slater
During pre-season training, rugby union (RU) athletes endeavour to enhance physical performance characteristics that are aligned with on-field success. Specific physique traits are associated with performance, therefore body composition assessment is routinely undertaken in elite environments. This study aimed to quantify pre-season physique changes in elite RU athletes with unique morphology and divergent ethnicity. Twenty-two Caucasian and Polynesian professional RU athletes received dual-energy X-ray absorptiometry (DXA) assessments at the beginning and conclusion of an 11-week pre-season...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29757050/longitudinal-changes-in-body-composition-assessed-using-dxa-and-surface-anthropometry-show-good-agreement-in-elite-rugby-union-athletes
#4
Adam J Zemski, Shelley E Keating, Elizabeth M Broad, Gary J Slater
Rugby union athletes have divergent body composition based on the demands of their on-field playing position and ethnicity. With an established association between physique traits and positional requirements, body composition assessment is routinely undertaken. Surface anthropometry and dual-energy X-ray absorptiometry (DXA) are the most common assessment techniques utilised, often undertaken synchronously. This study aims to investigate the association between DXA and surface anthropometry when assessing longitudinal changes in fat free mass (FFM) and fat mass (FM) in rugby union athletes...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29756967/dual-energy-x-ray-absorptiometry-dxa-reliability-and-intraobserver-reproducibility-for-segmental-body-composition-measuring
#5
Osvaldo Costa Moreira, Claudia Eliza Patrocinio de Oliveira, José Antonio De Paz
BACKGROUND: the measurement precision of body composition can interfere on the diagnosis and prescription of diseases' treatment. Furthermore, with regard to dual energy X-rays absorptiometry (DXA), there may be important differences between the measures of regions of interest (ROI) automatically performed by DXA or manually by an evaluator, which can cause measurement error and influence the evaluation or diagnosis. AIM: thus, this study aimed to evaluate the measurement reliability of body composition by DXA and intraobserver reproducibility for the ROI measurement...
January 17, 2018: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29754949/interpretation-of-dual-energy-x-ray-absorptiometry-derived-body-composition-change-in-athletes-a-review-and-recommendations-for-best-practice
#6
REVIEW
Karen Hind, Gary Slater, Brian Oldroyd, Matthew Lees, Shane Thurlow, Matthew Barlow, John Shepherd
Dual-energy X-ray absorptiometry (DXA) is a medical imaging device which has become the method of choice for the measurement of body composition in athletes. The objectives of this review were to evaluate published longitudinal DXA body composition studies in athletic populations for interpretation of "meaningful" change, and to propose a best practice measurement protocol. An online search of PubMed and CINAHL via EBSCO Host and Web of Science enabled the identification of studies published until November 2016...
March 23, 2018: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29750646/circulating-steroid-levels-as-correlates-of-adipose-tissue-phenotype-in-premenopausal-women
#7
Geneviève B Marchand, Anne-Marie Carreau, Sofia Laforest, Julie-Anne Côté, Marleen Daris, Katherine Cianflone, Cornelia Prehn, Jerzy Adamski, André Tchernof
Background Obesity-related alterations in the circulating steroid hormone profile remain equivocal in women. Our objective was to identify circulating steroid levels that relate to increased adiposity and altered adipose phenotype in premenopausal women. Materials and methods In a sample of 42 premenopausal women [age 46 ± 3 years; body mass index (BMI) 27.1 ± 4.2 kg/m2], 19 plasma steroids were quantified by electrospray ionization-liquid chromatography-tandem mass spectroscopy (ESI-LC-MS/MS). Body composition and fat distribution were assessed by dual-energy X-ray absorptiometry (DXA) and computed tomography (CT), respectively...
May 11, 2018: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/29736262/feasibility-of-robotic-exoskeleton-ambulation-in-a-c4-person-with-incomplete-spinal-cord-injury-a-case-report
#8
Robert M Lester, Ashraf S Gorgey
Introduction: To determine whether an individual with C4 incomplete spinal cord injury (SCI) with limited hand functions can effectively operate a powered exoskeleton (Ekso) to improve parameters of physical activity as determined by swing-time, up-time, walk-time, and total number of steps. Case presentation: A 21-year-old male with incomplete chronic (>1 year postinjury) SCI C4, participated in a clinical exoskeleton program to determine the feasibility of standing up and walking with limited hand functions...
2018: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/29718224/the-association-of-diet-and-exercise-with-body-composition-in-pediatric-crohn-s-disease
#9
Dale Lee, James D Lewis, Justine Shults, Robert N Baldassano, Jin Long, Rita Herskovitz, Babette Zemel, Mary B Leonard
Background: In pediatric Crohn's disease, fat mass improves over time with treatment, but lean mass deficits persist. This observational study of the associations of physical activity and dietary intake with lean mass and muscle strength in children with Crohn's disease was ancillary to a previously reported randomized clinical trial of an intervention to improve bone health. Methods: In this study, 138 participants were followed at baseline and at 6, 12, and 24 months with evaluation of lean and fat mass using DXA, muscle strength (peak torque), Crohn's characteristics, dietary intake, time in moderate to vigorous physical activity (MVPA), and serum insulin-like growth factor-1 (IGF-1) and tumor necrosis factor-alpha (TNF-α)...
April 27, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29714050/maternal-metabolomic-profile-and-fetal-programming-of-offspring-adiposity-identification-of-potentially-protective-lipid-metabolites
#10
Christian Hellmuth, Karen L Lindsay, Olaf Uhl, Claudia Buss, Pathik D Wadhwa, Berthold Koletzko, Sonja Entringer
SCOPE: The fetal programming paradigm posits that the origins of obesity can be traced, in part, to the intrauterine period of life. However, the mechanisms underlying fetal programming are not well understood, and few studies have measured offspring adiposity in the neonatal period. The aim of this study was to identify maternal metabolites, and their determinants, that are associated with neonatal adiposity. METHODS AND RESULTS: We applied a targeted metabolomics approach to analyze plasma samples collected across gestation from a well-characterized cohort of 253 pregnant women participating in a prospective study at the University of California, Irvine...
April 30, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29699814/dxa-measured-visceral-fat-mass-and-lean-body-mass-reflect-abnormal-metabolic-phenotypes-among-some-obese-and-nonobese-chinese-children-and-adolescents
#11
W Q Ding, J T Liu, Y X Shang, B Gao, X Y Zhao, H P Zhao, W J Wu
BACKGROUND AND AIM: The exact constellation of body composition characteristics among metabolically unhealthy obese (MUO) and nonobese (MUNO) children and adolescents remains unclear. The purpose of this study was to identify the major body composition determinants of metabolically unhealthy phenotypes among Chinese children and adolescents. METHODS AND RESULTS: We used data from a cross-sectional survey in 2015 that included 1983 children and adolescents aged 6-18 years...
March 10, 2018: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29698499/less-screen-time-and-more-frequent-vigorous-physical-activity-is-associated-with-lower-risk-of-reporting-negative-mental-health-symptoms-among-icelandic-adolescents
#12
Soffia M Hrafnkelsdottir, Robert J Brychta, Vaka Rognvaldsdottir, Sunna Gestsdottir, Kong Y Chen, Erlingur Johannsson, Sigridur L Guðmundsdottir, Sigurbjorn A Arngrimsson
OBJECTIVE: Few studies have explored the potential interrelated associations of screen time and physical activity with mental health in youth, particularly using objective methods. We examined cross-sectional associations of these variables among Icelandic adolescents, using objective and subjective measurements of physical activity. METHODS: Data were collected in the spring of 2015 from 315 tenth grade students (mean age 15.8 years) in six elementary schools in metropolitan Reykjavík, Iceland...
2018: PloS One
https://www.readbyqxmd.com/read/29682291/metformin-in-gestational-diabetes-the-offspring-follow-up-mig-tofu-body-composition-and-metabolic-outcomes-at-7-9-years-of-age
#13
Janet A Rowan, Elaine C Rush, Lindsay D Plank, Jun Lu, Victor Obolonkin, Suzette Coat, William M Hague
Objective: To compare body composition and metabolic outcomes at 7-9 years in offspring of women with gestational diabetes (GDM) randomized to metformin (±insulin) or insulin treatment during pregnancy. Research design and methods: Children were assessed at 7 years in Adelaide (n=109/181) and 9 years in Auckland (n=99/396) by anthropometry, bioimpedance analysis (BIA), dual-energy X-ray absorptiometry (DXA), magnetic resonance imaging (MRI) (n=92/99) and fasting bloods (n=82/99)...
2018: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/29681438/usefulness-of-reflection-scanning-in-determining-whole-body-composition-in-broadly-built-individuals-using-dual-energy-x-ray-absorptiometry
#14
Andreia V Moço, Catarina N Matias, Diana A Santos, Paulo M Rocha, Cláudia S Minderico, Edilson S Cyrino, Luís B Sardinha, Analiza M Silva
Whole-body composition analysis by dual-energy X-ray absorptiometry (DXA) requires subjects to fit within the width limits of the DXA bed. To overcome this limitation, the aim of this study was to validate a partial scanning technique at which the upper left limb is deliberately left unscanned and measurements are "reflected" from the right-side upper limb. A Hologic Explorer-W densitometer was used in a sample of 189 participants, including athletes and nonathletes, ranging from underweight to obese (body mass index: 17...
March 27, 2018: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29680519/is-dpp4-activity-increased-in-pcos
#15
Letícia Dinis da C Braga, Amelio F Godoy-Matos, Priscila de Oliveira Siciliano, José Otávio do Amaral Corrêa, Denise Pires Carvalho
AIMS: Dipeptidyl peptidase-4 (DPP4) is an adipokine with greater expression in visceral fat and related with insulin resistance (IR). Polycystic ovary syndrome (PCOS) is also associated with IR. Our study aims to evaluate DPP4 activity in PCOS. MATERIALS AND METHODS: Thirty PCOS patients were compared to 28 healthy women. Body composition by dual X-ray absorptiometry (DXA), plasma activity of DPP4 and biochemical variables were performed. All participants underwent an oral glucose tolerance test for insulin and glucose analysis...
April 14, 2018: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/29679919/the-effect-of-growth-hormone-on-bioactive-igf-in-overweight-obese-women
#16
Laura E Dichtel, Mette Bjerre, Melanie Schorr, Miriam A Bredella, Anu V Gerweck, Brian M Russell, Jan Frystyk, Karen K Miller
OBJECTIVE: Overweight/obesity is characterized by decreased growth hormone (GH) secretion whereas circulating IGF-I levels are less severely reduced. Yet, the activity of the circulating IGF-system appears to be normal in overweight/obese subjects, as estimated by the ability of serum to activate the IGF-I receptor in vitro (bioactive IGF). We hypothesized that preservation of bioactive IGF in overweight/obese women is regulated by an insulin-mediated suppression of IGF-binding protein-1 (IGFBP-1) and IGFBP-2, and by suppression of IGFBP-3, mediated by low GH...
March 10, 2018: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29673339/different-adiposity-indices-and-their-association-with-blood-pressure-and-hypertension-in-middle-aged-urban-black-south-african-men-and-women-findings-from-the-awi-gen-south-african-soweto-site
#17
Pedro T Pisa, Lisa K Micklesfield, Juliana Kagura, Michele Ramsay, Nigel J Crowther, Shane A Norris
BACKGROUND: To report associations between different adiposity indices [anthropometric and dual-energy X-ray absorptiometry (DXA) measures] and blood pressure (BP) and hypertension in urban black South African adults. METHODS: Anthropometric and DXA whole body measures were performed on 1026 men and 982 women. Participants were classified as being hypertensive if they had a systolic BP (SBP) ≥ 140 mmHg and/or diastolic (DBP) ≥ 90 mmHg. Within each gender the relationship of adiposity with BP and hypertension risk was assessed using linear and logistic regression models respectively...
April 19, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29672184/oral-supplementation-with-beta-hydroxy-beta-methylbutyrate-arginine-and-glutamine-improves-lean-body-mass-in-healthy-older-adults
#18
Amy C Ellis, Gary R Hunter, Amy M Goss, Barbara A Gower
Oral intake of beta-hydroxy-beta-methylbutyrate (HMB), arginine, and glutamine may ameliorate muscle loss by stimulating protein synthesis and decreasing protein degradation while simultaneously decreasing inflammation. Previous studies provide evidence for improvement in body composition with dietary supplementation of these ingredients among patients with muscle-wasting diseases. The objectives of this study were to examine the effects of this amino acid mixture on lean body mass, muscle volume, and physical function among healthy older adults...
April 19, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29671344/subclinical-cardiovascular-disease-parameters-after-one-year-in-new-users-of-depot-medroxyprogesterone-acetate-compared-to-copper-iud
#19
Kleber Cursino, Gabriel Araújo de Lima, Priscilla de Nazaré Silva Dos Santos, Elizabeth João Pavin, Luis Bahamondes, Arlete Fernandes
PURPOSE: To evaluate markers of cardiovascular disease in women with normal insulin sensitivity who had recently initiated use of depot medroxyprogesterone acetate (DMPA) as a contraceptive. MATERIALS AND METHODS: A prospective, non-randomised, comparative study. Data of 30 women of 18-40 years of age, with normal hyperinsulinaemic-euglycaemic clamp at baseline and body mass index (BMI) < 30, who opted to use DMPA or a copper intrauterine device (IUD) as a contraceptive, were analysed...
April 19, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29670261/body-weight-difference-between-dual-energy-x-ray-absorptiometry-and-multi-frequency-bioelectrical-impedance-analysis-attenuates-the-equivalence-of-body-composition-assessment
#20
Duong Duc Pham, Seung Ku Lee, Chol Shin, Nan Hee Kim, Chae Hun Leem
BACKGROUND/OBJECTIVES: Low agreement of body-composition analysis (BCA) using dual-energy X-ray absorptiometry (DXA) and multi-frequency bioelectrical impedance analysis (MF-BIA) has been reported. We examined whether this discrepancy is influenced by the precision of body weight (BW) measurement using DXA. SUBJECTS/METHODS: This cross-sectional study enrolled 1353 participants aged 53-83 years. A whole-body DXA scan and an eight-polar tactile-electrode impedance-meter using four electronic frequencies of 5, 50, 250, and 500 kHz were employed for BCA...
April 18, 2018: European Journal of Clinical Nutrition
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