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body composition and DXA

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https://www.readbyqxmd.com/read/28814982/cord-blood-dna-methylation-and-adiposity-measures-in-early-and-mid-childhood
#1
Jacob K Kresovich, Yinan Zheng, Andres Cardenas, Brian T Joyce, Sheryl L Rifas-Shiman, Emily Oken, Matthew W Gillman, Marie-France Hivert, Andrea A Baccarelli, Lifang Hou
BACKGROUND: Excess adiposity in childhood is associated with numerous adverse health outcomes. As this condition is difficult to treat once present, identification of risk early in life can help inform and implement strategies to prevent the onset of the condition. We performed an epigenome-wide association study to prospectively investigate the relationship between cord blood DNA methylation and adiposity measurements in childhood. METHODS: We measured genome-wide DNA methylation from 478 children in cord blood and measured overall and central adiposity via skinfold caliper measurements in early (range 3...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28799180/accuracy-of-octa-polar-bioelectrical-impedance-analysis-for-the-assessment-of-total-and-appendicular-body-composition-in-children-and-adolescents-with-hiv-comparison-with-dual-energy-x-ray-absorptiometry-and-air-displacement-plethysmography
#2
J A C de Castro, L R A de Lima, D A S Silva
BACKGROUND: Body composition analysis has been used to investigate fat mass (FM) and bone mineral content (BMC) in children and adolescents diagnosed with HIV. Investigating the validity of bioelectrical impedance analysis (BIA) is interesting with respect to testing useful techniques for monitoring body composition in children and adolescents in clinical practice. The present study aimed to determine the validity of body composition analysis by BIA compared to dual-energy X-ray absorptiometry (DXA) and air displacement plethysmography (ADP) in children and adolescents an HIV diagnosis...
August 10, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28799060/association-between-anthropometric-indices-body-composition-and-bone-parameters-in-thai-female-adolescents
#3
Rapheeporn Khwanchuea, Chuchard Punsawad
OBJECTIVE: To investigate correlations between anthropometrics and body composition with bone parameters of the whole-body and lumbar spine in non-obese and obese Thai female adolescents. METHODS: This study was performed in 135 female adolescents aged 15 to 18 y enrolled in secondary schools in southern Thailand. Subjects were grouped into non-obesity (underweight and normal-to-overweight) (BMI < 25) and obesity (BMI ≥ 25) groups. Anthropometric indices for obesity [body weight (BW), waist circumference (WC), and body mass index (BMI)] were recorded...
August 11, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28770669/case-study-unfavorable-but-transient-physiological-changes-during-contest-preparation-in-a-drug-free-male-bodybuilder
#4
Andrew Pardue, Eric T Trexler, Lisa K Sprod
Extreme body composition demands of competitive bodybuilding have been associated with unfavorable physiological changes, including alterations in metabolic rate and endocrine profile. The current case study evaluated the effects of contest preparation (8 months), followed by recovery (5 months), on a competitive drug-free male bodybuilder over 13 months (M1-M13). Serum testosterone, triiodothyronine (T3), thyroxine (T4), cortisol, leptin, and ghrelin were measured throughout the study. Body composition (BodPod, dual-energy x-ray absorptiometry [DXA]), anaerobic power (Wingate test), and resting metabolic rate (RMR) were assessed monthly...
August 3, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28763926/-analysis-of-association-between-appendicular-skeletal-muscle-mass-index-and-main-anthropometric-parameters-among-overweight-and-obese-adults-in-china
#5
Z H Wang, Y D Yang, S Wang, Y H Dong, X J Wang, J Ma
Objective: To investigate the associations between the appendicular skeletal muscle mass index and main anthropometric parameters, and to provide clues for preventing the reduction of skeletal muscle mass among overweight and obese adults in China. Methods: 1 488 volunteered participants who resided in Beijing longer than one year, between 22 and 55 years old, with self-report BMI ≥24 kg/m(2) were recruited from April to May 2014. 171 participants whose BMI ≤24 kg/m(2) or with organic diseases at the first physical examination were excluded, finally 1 317 overweight/obese participants (male and female were 507, and 810, respectively) were enrolled into the present study...
August 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28756995/an-investigation-into-the-differences-in-bone-density-and-body-composition-measurements-between-2-ge-lunar-densitometers-and-their-comparison-to-a-4-component-model
#6
Laura P E Watson, Michelle C Venables, Peter R Murgatroyd
We describe a study to assess the precision of the GE Lunar iDXA and the agreement between the iDXA and GE Lunar Prodigy densitometers for the measurement of regional- and total-body bone and body composition in normal to obese healthy adults. We compare the whole-body fat mass by dual-energy X-ray absorptiometry (DXA) to measurements by a 4-component (4-C) model. Sixty-nine participants, aged 37 ± 12 yr, with a body mass index of 26.2 ± 5.1 kg/cm(2), were measured once on the Prodigy and twice on the iDXA...
July 27, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28755448/short-term-in%C3%A2-vivo-precision-of-whole-body-composition-measurements-on-the-horizon-a-densitometer
#7
Michael Nowitz, Paula Monahan
INTRODUCTION: Dual-energy X-ray absorptiometry (DXA) is increasingly being used to assess abnormalities in body composition associated with a wide variety of conditions including obesity, sarcopenia, diabetes, anorexia, human immunodeficiency virus lipodystrophy, malabsorption and neuromuscular disorders. The objective of this study was to determine the short-term in vivo precision and least significant change in serial body composition measurements provided by the Hologic Horizon A densitometer as there is no published, peer reviewed body composition precision data on Horizon scanners in the medical literature...
July 29, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28751679/conjugated-linoleic-acid-supplementation-improves-maternal-high-fat-diet-induced-programming-of-metabolic-dysfunction-in-adult-male-rat-offspring
#8
Stephanie A Segovia, Mark H Vickers, Clint Gray, Xiaoyuan D Zhang, Clare M Reynolds
The developmental origins of health and disease hypothesis proposes that an adverse early life environment, including in utero exposure to a maternal obesogenic environment, can lead to an increased long-term risk of obesity and related metabolic complications in offspring. We assessed whether maternal supplementation with conjugated linoleic acid (CLA) could prevent some of these adverse effects in offspring exposed to a maternal high fat diet. Sprague-Dawley dams consumed either a: control (CD), control with CLA (CLA), high fat (HF) or high fat with CLA (HFCLA) diet 10 days prior to mating and throughout pregnancy/lactation...
July 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28743353/which-is-the-best-cutoff-of-body-mass-index-to-identify-obesity-in-female-patients-with-rheumatoid-arthritis-a-study-using-dual-energy-x-ray-absorptiometry-body-composition
#9
Maria Fernanda B Resende Guimarães, Maria Raquel da Costa Pinto, Renata G Santos Couto Raid, Marcus Vinícius Melo de Andrade, Adriana Maria Kakehasi
INTRODUCTION: Standard anthropometric measures used to diagnose obesity in the general population may not have the same performance in patients with rheumatoid arthritis. OBJECTIVE: To determine cutoff points for body mass index (BMI) and waist circumference (WC) for detecting obesity in women with rheumatoid arthritis (RA) by comparing these standard anthropometric measures to a dual-energy X-ray absorptiometry (DXA)-based obesity criterion. PATIENTS AND METHOD: Adult female patients with more than six months of diagnosis of RA underwent clinical evaluation, with anthropometric measures and body composition with DXA...
July 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28734987/bioavailable-and-free-25-hydroxyvitamin-d-and-vitamin-d-binding-protein-in-polycystic-ovary-syndrome-relationships-with-obesity-and-insulin-resistance
#10
Negar Naderpoor, Soulmaz Shorakae, Sally K Abell, Aya Mousa, Anju E Joham, Lisa J Moran, Nigel K Stepto, Poli Mara Spritzer, Helena J Teede, Barbora de Courten
Polycystic ovary syndrome (PCOS) is a common condition characterised by both reproductive and metabolic features (obesity, insulin resistance, diabetes risk). Some evidence suggests that women with PCOS have lower vitamin D levels compared to healthy controls. Vitamin D binding protein (DBP) is the main carrier of vitamin D in circulation and plays an important role in regulating vitamin D concentration and bioavailability for target tissues. To our knowledge, no previous studies have examined DBP, bioavailable and free 25-hydroxyvitamin D (25(OH)D) in women with PCOS...
July 19, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28732577/cross-calibration-of-the-ge-prodigy-and-idxa-for-the-measurement-of-total-and-regional-body-composition-in-adults
#11
Brian Oldroyd, Laura Treadgold, Karen Hind
Dual-energy X-ray absorptiometry (DXA) body composition measurements are widely performed in both clinical and research settings, and enable the rapid and noninvasive estimation of total and regional fat and lean mass tissues. DXA upgrading can occur during longitudinal monitoring or study; therefore, cross calibration of old and new absorptiometers is required. We compared soft tissue estimations from the GE Prodigy (GE Healthcare, Madison, WI) with the more recent iDXA (GE Healthcare) and developed translational equations to enable Prodigy values to be converted to iDXA values...
July 18, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28727231/nulliparity-is-associated-with-subtle-adverse-metabolic-outcomes-in-overweight-obese-mothers-and-their-offspring
#12
Sumudu N Seneviratne, José G B Derraik, Yannan Jiang, Lesley M E McCowan, Silmara Gusso, Janene B Biggs, Graham K Parry, Valentina Chiavaroli, Wayne S Cutfield, Paul L Hofman
BACKGROUND: We aimed to evaluate metabolic outcomes in overweight/obese nulliparous and multiparous women and their offspring. STUDY DESIGN: Seventy-two overweight and obese women who participated in a randomized controlled trial of exercise in pregnancy were included in the study, comparing 18 nulliparous and 54 multiparous women and their singleton offspring. Women were assessed at 19 and 36 weeks of gestation. Fetal growth was measured using standard obstetric ultrasound techniques...
July 20, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28723842/reduced-neuromuscular-performance-in-amenorrheic-elite-endurance-athletes
#13
Åsa B Tornberg, Anna Melin, Fiona Manderson Koivula, Anders Johansson, Sven Skouby, Jens Faber, Anders Sjödin
INTRODUCTION: Secondary functional hypothalamic amenorrhea (SFHA) is common among female athletes, especially in weight-sensitive sports. The aim of this study was to investigate the link between SFHA and neuromuscular performance in elite endurance athletes. METHODS: Sixteen eumenorrheic (EUM) and 14 SFHA athletes from national teams and competitive clubs participated. Methods included gynecological examination; body composition (DXA);; resting metabolic rate and work efficiency; exercise capacity; knee muscular strength (KMS) and knee muscular endurance (KME); reaction time (RT); blood sampling performed on the 3rd-5th day of the menstrual cycle, and 7-day assessment of energy availability...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28721555/the-value-of-physical-performance-measurements-alongside-assessment-of-sarcopenia-in-predicting-receipt-and-completion-of-planned-treatment-in-non-small-cell-lung-cancer-an-observational-exploratory-study
#14
Jemima T Collins, Simon Noble, John Chester, Helen E Davies, William D Evans, Daniel Farewell, Jason F Lester, Diane Parry, Rebecca Pettit, Anthony Byrne
INTRODUCTION: The presence of muscle mass depletion is associated with poor outcomes and survival in cancer. Alongside muscle mass, assessment of muscle strength or physical performance is essential for the diagnosis of sarcopenia. Non-small cell lung cancer (NSCLC) is a prevalent form of cancer with high mortality, and Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) is commonly used to assess patients' suitability for treatment. However, a significant proportion of patients with good PS are unable to complete multidisciplinary team (MDT)-planned treatment...
July 18, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28719834/the-exon3-deleted-growth-hormone-receptor-gene-polymorphism-d3-ghr-is-associated-with-insulin-and-spontaneous-growth-in-short-sga-children-nesgas
#15
Mathilde Gersel Wegmann, Ajay Thankamony, Edna Roche, Hilary Hoey, Jeremy Kirk, Guftar Shaikh, Sten-A Ivarsson, Olle Söder, David B Dunger, Anders Juul, Rikke Beck Jensen
OBJECTIVE: The effect of a common polymorphism in the Growth Hormone (GH) receptor (d3-GHR) gene on growth, metabolism and body composition was examined in short children born small for gestational age (SGA) on GH treatment. DESIGN: In 96 prepubertal, short SGA children treated with high-dose GH (67μg/kg/day) in the NESGAS study, insulin sensitivity (IS), insulin secretion and disposition index (DI) were determined during the first year of treatment. Body composition was analysed by DXA...
July 12, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28719493/validity-and-reliability-of-assessing-body-composition-using-a-mobile-application
#16
Elizabeth Z MacDonald, Pat R Vehrs, Gilbert W Fellingham, Dennis Eggett, James D George, Ronald Hager
PURPOSE: The purpose of this study was to determine the validity and reliability of the LeanScreen (LS) mobile application that estimates percent body fat (%BF) using estimates of circumferences from photographs. METHODS: The %BF of 148 weight-stable adults was estimated once using DXA. Each of two administrators assessed the %BF of each subject twice using the LS app and manually measured circumferences. A mixed model ANOVA and Bland-Altman analyses were used to compare the estimates of %BF obtained from each method...
July 17, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28718178/body-composition-is-different-after-surgical-or-pharmacological-remission-of-cushing-s-syndrome-a-prospective-dxa-study
#17
Filippo Ceccato, Michela Boccato, Marialuisa Zilio, Mattia Barbot, Anna Chiara Frigo, Giovanni Luisetto, Marco Boscaro, Carla Scaroni, Valentina Camozzi
Patients with active Cushing's syndrome (CS) exhibit an increase of the visceral adipose tissue, increasing the risk of cardiovascular events. Until now, it is not yet clear whether remission of CS leads to a normalization of body composition, or if different strategies to control hypercortisolism could result in a different clinical outcome concerning adipose tissue distribution. Therefore, we analyzed body composition changes using dual-energy X-ray absorptiometry (DXA) in patients with CS in a prospective and controlled study...
July 17, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28700517/a-longitudinal-assessment-of-bone-mineral-density-and-body-composition-in-competitive-cyclists
#18
Breanne S Baker, Raoul F Reiser
Competitive cycling has been associated with low bone mineral density (BMD); however, BMD is a multifaceted issue. The purpose of this study was to investigate how age (18-49 years), sex, USA Cycling Category (elite-4) and racing type (road and multiple bikes), influenced body composition across a season in competitive cyclists. February marked the preseason, where 42 participants (22 males, 20 females) completed a health history and cycling questionnaire, four day dietary log and a Dual-energy X-ray absorptiometry (DXA) scan and repeated the measures 180±11 days later...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28694162/impaired-bone-strength-estimates-at-the-distal-tibia-and-its-determinants-in-adolescents-with-anorexia-nervosa
#19
Vibha Singhal, Shreya S Tulsiani, Karen Joanie Campoverde, Deborah M Mitchell, Meghan Slattery, Melanie Schorr, Karen K Miller, Miriam A Bredella, Madhusmita Misra, Anne Klibanski
BACKGROUND: Altered bone microarchitecture and higher marrow adipose tissue (MAT) may reduce bone strength. High resolution pQCT (HRpQCT) allows assessment of volumetric BMD (vBMD), and size and microarchitecture parameters of bone, while 1H-magnetic resonance spectroscopy (1H-MRS) allows MAT evaluation. We have reported impaired microarchitecture at the non-weight bearing radius in adolescents with anorexia nervosa (AN) and that these changes may precede aBMD deficits. Data are lacking regarding effects of AN on microarchitecture and strength at the weight-bearing tibia in adolescents and young adults, and the impact of changes in microarchitecture and MAT on strength estimates...
July 7, 2017: Bone
https://www.readbyqxmd.com/read/28689248/daily-self-weighing-and-weight-gain-prevention-a-longitudinal-study-of-college-aged-women
#20
Diane L Rosenbaum, Hallie M Espel, Meghan L Butryn, Fengqing Zhang, Michael R Lowe
Daily self-weighing has been suggested as an important factor for weight loss maintenance among samples with obesity. This study is a secondary analysis that examined daily self-weighing in association with weight and body composition outcomes over 2 years among young women with vulnerability for weight gain. Women (N = 294) of varying weight status completed self-weighing frequency questionnaires and weight was measured in the clinic at baseline, 6 months, 1, and 2 years; DXA scans were completed at baseline, 6 months and 2 years...
July 8, 2017: Journal of Behavioral Medicine
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