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https://www.readbyqxmd.com/read/29144884/adiposity-and-asthma-in-a-nationwide-study-of-children-and-adults-in-the-united-states
#1
Erick Forno, Yueh-Ying Han, Ingrid M Libman, Radhika H Muzumdar, Juan C Celedón
RATIONALE: While obesity has been associated with asthma, body mass index (BMI) is suboptimal to fully characterize adiposity. OBJECTIVES: We examined the relation between adiposity and asthma in a large sample of the U.S. population, using indices defined by dual energy X-ray absorptiometry (DXA). METHODS: We analyzed data from 8,886 children (aged 8-19 years) and 12,795 adults (aged 20-69 years) from the 2001-2006 National Health and Nutrition Examination Survey (NHANES)...
November 16, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29144805/dpp4-inhibitor-sitagliptin-as-a-potential-treatment-option-in-metformin-intolerant-obese-women-with-polycystic-ovary-syndrome-a-pilot-randomized-study
#2
Simona Ferjan, Andrej Janez, Mojca Jensterle
OBJECTIVE: Metformin has an established role in the management of polycystic ovary syndrome (PCOS). Some patients cannot tolerate it due to associated gastrointestinal adverse events. The present study evaluated DPP4 inhibitor sitagliptin as a potential treatment option in metformin intolerant PCOS. DESIGN: We conducted a 12-week prospective randomized open-label study with 30 obese metformin intolerant women with PCOS (aged 35.0±7.2 years, BMI 36.9±5.5 kg/m(2))...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29144272/body-composition-in-children-with-chronic-illness-accuracy-of-bedside-assessment-techniques
#3
Enid E Martinez, Craig D Smallwood, Nicolle L Quinn, Katelyn Ariagno, Lori J Bechard, Christopher P Duggan, Nilesh M Mehta
OBJECTIVE: To evaluate the accuracy of estimated fat mass and fat-free mass from bedside methods compared with reference methods in children with chronic illnesses. STUDY DESIGN: Fat mass and fat-free mass values were obtained by skinfold, bioelectrical impedance analysis (BIA), dual-energy x-ray absorptiometry (DXA), and deuterium dilution method in children with spinal muscular atrophy, intestinal failure, and post hematopoietic stem cell transplantation (HSCT)...
November 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29143140/impact-of-conventional-medical-therapy-on-bone-mineral-density-and-bone-turnover-in-adult-patients-with-x-linked-hypophosphatemia-a-6-year-prospective-cohort-study
#4
Vikram Vinod Shanbhogue, Stinus Hansen, Niklas Rye Jørgensen, Signe Sparre Beck-Nielsen
X-linked hypophosphatemia (XLH) is a rare, inheritable disorder manifesting as rickets in children and osteomalacia in adults. While conventional medical treatment with oral phosphate and alfacalcidol is recommended in childhood, it is undecided whether adults should continue therapy. The aim of this 6-year prospective study was to determine the impact of conventional medical treatment on areal bone mineral density (aBMD), bone turnover markers (BTMs) and measures of calcium homeostasis in 27 adult patients with XLH, 11 of whom received medical treatment...
November 15, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29141853/the-effects-of-resistance-exercise-on-biomarkers-of-breast-cancer-prognosis-a-pooled-analysis-of-three-randomized-trials
#5
Kerri Winters-Stone, Lisa J Wood, Sydnee Stoyles, Nathan Dieckmann
BACKGROUND: Using a secondary data analysis from randomized controlled trials comparing one year of resistance exercise (N=109) to a placebo control condition (N=106) in postmenopausal, post-treatment breast cancer survivors, we investigated the influence of resistance training and changes in body composition on markers associated with cancer progression. METHODS: Measures included serum levels of insulin, IGF-1, IGFBP1-3, leptin, serum amyloid A (SAA), adiponectin, C-reactive protein (CRP), IL-1β, TNF-α, IL-6, and IL-8 and body composition (total, lean and fat mass in kg) by DXA at baseline, 6, and 12-months...
November 15, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29140875/bone-mineral-density-declines-twice-as-quickly-among-hiv-infected-women-compared-to-men
#6
Kristine M Erlandson, Jordan E Lake, Myung Sim, Julian Falutz, Carla M Prado, Ana Rita Domingues da Silva, Todd T Brown, Giovanni Guaraldi
BACKGROUND: Initial declines in bone mineral density (BMD) following antiretroviral therapy (ART) initiation in HIV are well described, but data on long-term changes and risk factors for decline, particularly among women, are limited. METHODS: HIV-infected men and women in the Modena Metabolic Clinic underwent dual-energy X-ray absorptiometry (DXA) scans every 6-12 months for up to 10 years (median 4.6 years). Mixed effect regression model in combined and sex-stratified models determined annual rates of decline and clinical factors associated with BMD...
November 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29135897/is-bmi-a-valid-measure-of-obesity-in-postmenopausal-women
#7
Hailey R Banack, Jean Wactawski-Wende, Kathleen M Hovey, Andrew Stokes
OBJECTIVE: Body mass index (BMI) is a widely used indicator of obesity status in clinical settings and population health research. However, there are concerns about the validity of BMI as a measure of obesity in postmenopausal women. Unlike BMI, which is an indirect measure of obesity and does not distinguish lean from fat mass, dual-energy x-ray absorptiometry (DXA) provides a direct measure of body fat and is considered a gold standard of adiposity measurement. The goal of this study is to examine the validity of using BMI to identify obesity in postmenopausal women relative to total body fat percent measured by DXA scan...
November 13, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/29134506/the-risk-of-eating-disorders-and-bone-health-in-young-adults-the-mediating-role-of-body-composition-and-fitness
#8
Miriam Garrido-Miguel, Ana Torres-Costoso, María Martínez-Andrés, Blanca Notario-Pacheco, Ana Díez-Fernández, Celia Álvarez-Bueno, Jorge Cañete García-Prieto, Vicente Martínez-Vizcaíno
PURPOSE: To analyze the independent relationship between the risk of eating disorders and bone health and to examine whether this relationship is mediated by body composition and cardiorespiratory fitness (CRF). METHODS: In this cross-sectional study, bone-related variables, lean mass, fat mass (by DXA), risk of eating disorders (SCOFF questionnaire), height, weight, waist circumference and CRF were measured in 487 university students aged 18-30 years from the University of Castilla-La Mancha, Spain...
November 13, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/29134241/ct-based-evaluation-of-volumetric-bone-density-in-fragility-fractures-of-the-pelvis-a-matched-case-control-analysis
#9
D Schönenberg, R Guggenberger, D Frey, H-C Pape, H-P Simmen, G Osterhoff
This matched case-control study compared the computed tomography (CT)-based regional bone density of patients with fragility fractures of the sacrum to a control without fracture. Patients with a sacral fracture demonstrated a significantly lower regional bone density of the sacrum, the sacral bone density not being correlated with the BMD by DXA of the spine. INTRODUCTION: The aim of this study is to compare the computed tomography-based regional bone density measured by Hounsfield units (HUs) in patients with and without fragility fractures of the sacrum...
November 13, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29131093/metformin-for-rapidly-maturing-girls-with-central-adiposity-less-liver-fat-and-slower-bone-maturation
#10
Francis de Zegher, Cristina García Beltrán, Abel López-Bermejo, Lourdes Ibáñez
BACKGROUND/AIMS: Girls with low-birth weight (LBW) and postnatal weight catch-up tend to develop visceral and hepatic fat excess, which may be accompanied by an upregulated adrenarche with precocious pubarche (PP) and by a rapidly progressive puberty with early menarche and shorter stature. A pilot study suggested that metformin treatment for 4 years reduces central adiposity in LBW-PP girls and normalizes puberty and adult height. In this cohort, we studied the relationship between metformin treatment, bone maturation, and body composition...
November 7, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29130710/body-fat-percentage-comparisons-between-four-methods-in-young-football-players-are-they-comparable
#11
Gabriel Lozano Berges, Ángel Matute Llorente, Alejandro Gómez Bruton, Alejandro González Agüero, German Vicente Rodríguez, José Antonio Casajús
INTRODUCTION: Dual X-ray absorptiometry (DXA), air displacement plethysmography (ADP), bioelectrical impedance analysis (BIA) and anthropometry are four body composition methods that have been frequently used for the assessment of body fat percentage (%BF) in athletes. However, the agreement between these methods has not been studied yet in adolescent football players. OBJECTIVES: The aim of this study was to compare %BF calculated by DXA, ADP, BIA and anthropometry in 92 participants...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29130706/androgen-receptor-gene-polymorphisms-and-maximal-fat-oxidation-in-healthy-men-a-longitudinal-study
#12
Jesús Gustavo Ponce González, Amelia Guadalupe-Grau, Francisco Germán Rodríguez-González, Rafael Torres-Peralta, David Morales-Alamo, Lorena Rodríguez-García, Bonifacio Nicolás Díaz-Chico, José Antonio López Calbet, Cecilia Dorado
INTRODUCTION: Androgens play a major role in fat oxidation; however, the effects of androgens depend, among other factors, on the intrinsic characteristics of the androgen receptor (AR). Lower repetitions of CAG and GGN polymorphism appear to have a protective effect on fat accumulation in the transition from adolescent to mid-twenties. Whether a similar protective effect is present later in life remains unknown. The aims of this study were: a) to evaluate if extreme CAG and GGN repeat polymorphisms of the androgen receptors influence body fat mass, its regional distribution, resting metabolic rate (RMR), maximal fat oxidation capacity (MFO) and serum leptin, free testosterone and osteocalcin in healthy adult men; and b) to determine the longitudinal effects on fat tissue accumulation after 6...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29125120/canal-to-diaphysis-ratio-as-a-risk-factor-for-hip-fractures-and-hip-fracture-pattern
#13
Prasad Ellanti, Kunal Mohan, Andrew Moriarity, Niall Hogan, Tom McCarthy
INTRODUCTION: Osteoporosis and related fractures constitute a significant burden on modern healthcare. The standard method of diagnosing osteoporosis with a dual-energy X-ray absorptiometry (DXA) scan is limited by accessibility and expense. The thickness of the cortex of the proximal femur on plain radiographs has been suggested to be a method for indicating osteoporosis and as a risk factor of hip fractures in the elderly. METHODS: A retrospective study was undertaken to assess the usefulness of the canal-diaphysis ratio (CDR) as a risk factor for developing a hip fracture, excluding patients presenting under 50 years old, following high-energy trauma or pathological fractures...
2017: SICOT-J
https://www.readbyqxmd.com/read/29124083/osteoprotegerin-autoantibodies-do-not-predict-low-bone-mineral-density-in-middle-aged-women
#14
Fariba Vaziri-Sani, Charlotte Brundin, Daniel Agardh
Purpose: Autoantibodies against osteoprotegerin (OPG) have been associated with osteoporosis. The aim was to develop an immunoassay for OPG autoantibodies and test their diagnostic usefulness of identifying women general population with low bone mineral density. Methods: Included were 698 women at mean age 55.1 years (range 50.4-60.6) randomly selected from the general population. Measurement of wrist bone mineral density (g/cm(2)) was performed of the non-dominant wrist by dual-energy X-ray absorptiometry (DXA)...
December 2017: Bone Reports
https://www.readbyqxmd.com/read/29120982/total-and-segmental-body-composition-examination-in-collegiate-football-players-using-multifrequency-bia-and-dxa
#15
Christiana J Raymond, Donald R Dengel, Tyler A Bosch
The current study examined the influence of player position on the agreement between multi-frequency bioelectrical impedance analysis (MfBIA) and dual X-ray absorptiometry (DXA) when assessing total and segmental percent body fat (BF%), fat mass (FM), and fat-free mass (FFM) in NCAA Division I collegiate football athletes. Forty-four male collegiate athletes (age=19±1 yrs; height=1.9±1.0 m; weight=106.4±18.8 kg) participated. Player positions included: offensive linemen (OL; n=7), tight ends (TE; n=4), wide receivers (WR; n=9), defensive linemen (DL; n=6), defensive backs (DB; n=8), linebackers (LB; n=6), and running backs (RB; n=4)...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29115684/bone-material-strength-index-as-measured-by-impact-microindentation-in-postmenopausal-women-with-distal-radius-and-hip-fractures
#16
Tamara D Rozental, Kempland C Walley, Serkalem Demissie, Signe Caksa, Adriana Martinez-Betancourt, Amber M Parker, Joy N Tsai, Elaine W Yu, Mary L Bouxsein
We tested whether cortical bone tissue properties assessed by in vivo impact microindentation would distinguish postmenopausal women with recent distal radius (DRF) or hip fracture (HF) from non-fracture controls (CONT). We enrolled postmenopausal women with recent DRF (n=57), HF (n=41) or CONT (n=93), and used impact microindentation to assess bone material strength index (BMSi) at the anterior surface of the mid-tibia diaphysis. Areal BMD (g/cm(2) ) of the femoral neck (FN), total hip (TH) and lumbar spine (LS) were measured by dual-energy X-ray absorptiometry (DXA)...
November 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29111198/cumulative-effective-dose-and-cancer-risk-of-pediatric-population-in-repetitive-whole-body-scan-using-dual-energy-x-ray-absorptiometry
#17
Martin Law, Wang-Kei Ma, Eva Chan, Candy Mui, Vivian Ma, Wai-Yin Ho, Lawrance Yip, Wendy Lam
This study aims to quantitatively evaluate the cumulative effective dose and associated cancer risk of pediatric patients of US and Hong Kong population undergoing repetitive whole-body scans with dual-energy X-ray absorptiometry (DXA) during their diagnosis and follow-up periods. Organ-absorbed doses of pediatric patients undergoing DXA whole-body scan have been computer simulated using patient imaging parameters input to the Monte Carlo software PCXMC. Gender- and age-specific effective doses have been calculated with the simulated organ-absorbed doses using the ICRP-103 approach...
September 29, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29110742/development-and-validation-of-anthropometric-prediction-equations-for-lean-body-mass-fat-mass-and-percent-fat-in-adults-using-the-national-health-and-nutrition-examination-survey-nhanes-1999-2006
#18
Dong Hoon Lee, NaNa Keum, Frank B Hu, E John Orav, Eric B Rimm, Qi Sun, Walter C Willett, Edward L Giovannucci
Quantification of lean body mass and fat mass can provide important insight into epidemiological research. However, there is no consensus on generalisable anthropometric prediction equations to validly estimate body composition. We aimed to develop and validate practical anthropometric prediction equations for lean body mass, fat mass and percent fat in adults (men, n 7531; women, n 6534) from the National Health and Nutrition Examination Survey 1999-2006. Using a prediction sample, we predicted each of dual-energy X-ray absorptiometry (DXA)-measured lean body mass, fat mass and percent fat based on different combinations of anthropometric measures...
November 7, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29108552/effect-of-body-fat-and-gender-on-body-temperature-distribution
#19
Eduardo Borba Neves, Ana Carla Chierighini Salamunes, Rafael Melo de Oliveira, Adriana Maria Wan Stadnik
It is well known that body composition can influence peripheral heat loss and skin temperature. That the distribution of body fat is affected by gender is well known; however, there is little information on how body composition and gender influences the measure of skin temperature. This study evaluated skin temperature distribution according to body fat percentage (BF%) and gender. A sample of 94 apparently healthy volunteers (47 women and 47 men) was assessed with Dual-Energy X-Ray Absorptiometry (DXA) and infrared thermography (mean, maximum and minimum temperatures - TMean, TMax and TMin)...
December 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29103097/vertebral-imaging-in-the-diagnosis-of-osteoporosis-a-clinician-s-perspective
#20
REVIEW
Sharon H Chou, Meryl S LeBoff
PURPOSE OF REVIEW: Vertebral fractures are the most common osteoporotic fracture and result in functional decline and excess mortality. Dual-energy x-ray absorptiometry (DXA) is the gold standard for the diagnosis of osteoporosis to identify patients at risk for fragility fractures; however, advances in imaging have expanded the role of computed tomography (CT) and magnetic resonance imaging (MRI) in evaluating bone health. RECENT FINDINGS: The utility of CT and MRI in the assessment of bone density is starting to gain traction, particularly when used opportunistically...
November 4, 2017: Current Osteoporosis Reports
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