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body composition and DXA

Cherilyn N Mclester, Alex D Dewitt, Rasmus Rooks, John R Mclester
The purpose of this study was to compare the body fat per cent (BF%) assessed with a unique handheld electrical impedance myography (EIM) device, along with other popular methods, to dual-energy X-ray absorptiometry (DXA). Participants included 33 males (aged 24.3 ± 4.6 years) and 38 females (aged 25.3 ± 8.9 years) who completed 2 visits separated by 24-72 h. The assessments included DXA, bioelectrical impedance analysis (BIA), skinfold measures (SKF), and three separate EIM measurements. No significant differences in BF% (P > 0...
March 15, 2018: European Journal of Sport Science
Asunción Ferri-Morales, Marcus Vinicius Nascimento-Ferreira, Dimitris Vlachopoulos, Esther Ubago-Guisado, Ana Torres-Costoso, Augusto Cesar F De Moraes, Alan R Barker, Luis A Moreno, Vicente Martínez-Vizcaino, Luis Gracia-Marco
PURPOSE: To examine the intermethods agreement of dual-energy X-ray absorptiometry (DXA) and foot-to-foot bioelectrical impedance analysis (BIA) to assess the percentage of body fat (%BF) in young male athletes using air-displacement plethysmography (ADP) as the reference method. METHODS: Standard measurement protocols were carried out in 104 athletes (40 swimmers, 37 footballers, and 27 cyclists, aged 12-14 y). RESULTS: Age-adjusted %BF ADP and %BF BIA were significantly higher in swimmers than footballers...
March 15, 2018: Pediatric Exercise Science
Carmelo Messina, Gabriele Maffi, Jacopo Antonino Vitale, Fabio Massimo Ulivieri, Giuseppe Guglielmi, Luca Maria Sconfienza
Osteoporosis and sarcopenia represent two major health problems with an increasing prevalence in the elderly population. The correlation between these diseases has been widely reported, leading to the development of the term "osteosarcopenia" to diagnose those patients suffering from both diseases. Several imaging methods for the diagnosis and management of osteoporosis exist, with dual-energy X-ray absorptiometry (DXA) being the most commonly used for measuring bone mineral density (BMD). Imaging technique other than DXA is represented by conventional radiography, computed tomography (CT) and ultrasound (US)...
February 2018: Quantitative Imaging in Medicine and Surgery
Daniela G L Terson de Paleville, Susan J Harkema, Claudia A Angeli
CONTEXT: Four individuals with motor complete SCI with an implanted epidural stimulator who were enrolled in another study were assessed for cardiovascular fitness, metabolic function and body composition at four time points before, during, and after task specific training. Following 80 locomotor training sessions, a 16-electrode array was surgically placed on the dura (L1-S1 cord segments) to allow for electrical stimulation. After implantation individuals received 160 sessions of task specific training with epidural stimulation (stand and step)...
March 14, 2018: Journal of Spinal Cord Medicine
Liam Bagley, Nasser Al-Shanti, Steven Bradburn, Osamah Baig, Mark Slevin, Jamie S McPhee
BACKGROUND: Regular sprint interval training (SIT) improves whole-body aerobic capacity and muscle oxidative potential, but very little is known about knee extensor anabolic or fatigue resistance adaptations, or whether effects are similar for males and females. The purpose of this study was to compare sex-related differences in knee extensor size, torque-velocity relationship and fatigability adaptations to 12 weeks SIT. METHODS: Sixteen males and fifteen females (mean (SEM) age: 41 (±2...
March 12, 2018: Journal of Strength and Conditioning Research
L B McMillan, D Aitken, P Ebeling, G Jones, D Scott
Relationships between objectively assessed free-living physical activity (PA) and changes in bone health over time are poorly understood in older adults. This study suggests these relationships are sex-specific and that body composition may influence the mechanical loading benefits of PA. INTRODUCTION: To investigate associations of objectively assessed PA and bone health in community-dwelling older adults. METHODS: This secondary analysis of a subset of the Tasmanian Older Adult Cohort study included participants with PA assessed utilising ActiGraph GT1M accelerometers over 7 days (N = 209 participants, 53% female; mean ± SD age 64...
March 12, 2018: Osteoporosis International
Juliano Soares Rabello Moreira, Tatiana Pedroso de Paula, Luiza Ferreira Sperb, Maria Elisa Peinado Miller, Mirela Jobim de Azevedo, Luciana Verçoza Viana
AIMS: To evaluate nutritional and metabolic parameters associated with vitamin D status and blood pressure (BP) in type 2 diabetes and hypertensive patients. METHODS: BP evaluated by office and 24-h ambulatory BP monitoring (ABPM). Physical activity was evaluated by daily step count, body composition by DXA, and diet by a food frequency questionnaire. RESULTS: 116 patients were evaluated and median 25-hydroxyvitamin D level was 21 (16-27) ng/ml; 43% deficient (<20 ng/ml)...
March 5, 2018: Diabetes Research and Clinical Practice
Leticia Goni, Dianjianyi Sun, Yoriko Heianza, Tiange Wang, Tao Huang, J Alfredo Martínez, Xiaoyun Shang, George A Bray, Steven R Smith, Frank M Sacks, Lu Qi
PURPOSE: A common variant of the melatonin receptor 1B (MTNR1B) gene has been related to increased signaling of melatonin, a hormone previously associated with body fatness mainly through effects on energy metabolism. We examined whether the MTNR1B variant affects changes of body fatness and composition in response to a dietary weight loss intervention. METHODS: The MTNR1B rs10830963 variant was genotyped for 722 overweight and obese individuals, who were randomly assigned to one of four diets varying in macronutrient composition...
March 7, 2018: European Journal of Nutrition
Ashraf S Gorgey, Christopher M Cirnigliaro, William A Bauman, Robert A Adler
STUDY DESIGN: Repeated measures design. OBJECTIVES: To determine the reproducibility of total-body and regional-body composition assessments from a total-body scan using dual-energy x-ray absorptiometry (DXA) in persons with spinal cord injury (SCI). METHODS: Twenty-four individuals with SCI completed within-day short-term precision testing by repositioning study participants between scans. An additional and separate cohort of 22 individuals with SCI were scanned twice on a GE-Lunar DXA scanner separated by a 4-week interval to assess the long-term precision assessment...
March 6, 2018: Spinal Cord
Clara Suemi da Costa Rosa, Danilo Yuzo Nishimoto, Giovana Damasceno E Souza, Ariane Pereira Ramirez, Carla Oliveira Carletti, Célio Guilherme Lombardi Daibem, Giorgos K Sakkas, Henrique Luiz Monteiro
OBJECTIVE: This study aimed to investigate the effect of continuous progressive resistance training on body composition, functional capacity and self-reported quality of life in end-stage renal disease patients. DESIGN: A randomized controlled trial. SUBJECTS: The study included 52 hemodialysis patients (aged 55.7 ± 14.03 years) randomized into exercise (progressive resistance training (PRT), n = 28) or control (CON, n = 24) groups...
March 1, 2018: Clinical Rehabilitation
Carla Van Aller, Jose Lara, Blossom C M Stephan, Lorenzo Maria Donini, Steven Heymsfield, Peter T Katzmarzyk, Jonathan C K Wells, Carla M Prado, Mario Siervo
BACKGROUND/OBJECTIVES: There is no consensus on the definition of sarcopenic obesity (SO), resulting in inconsistent associations of SO with mortality risk. We aim to evaluate association of dual energy x-ray absorptiometry (DXA) SO models with mortality risk in a US adult population (≥50 years). SUBJECTS/METHODS: The study population consisted of 3577 participants aged 50 years and older from the 1999-2004 National Health and Nutrition and Examination Survey with mortality follow-up data through December 31, 2011...
February 15, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
Michael J Ormsbee, Brandon D Willingham, Tasha Marchant, Teresa L Binkley, Bonny L Specker, Matthew D Vukovich
We examined the effect of a protein supplement on muscular strength and body composition during 6 months of a 5d/wk concurrent strength and endurance training program. Sedentary males (n=26) and females (n=25), 18-25yrs, were randomly assigned to receive a protein (PRO, 42g/serving) or carbohydrate (CON) supplement twice daily. Strength and body composition (DXA) were assessed at baseline, 3(3M) and 6(6M) months. Protein intake was higher in PRO [PRO:2.2g/kg; CON:1.1g/kg, P<0.001]. Females in both groups gained similar strength at 3M and 6M in bench press (BP) and hip sled (HS)...
February 27, 2018: International Journal of Sport Nutrition and Exercise Metabolism
Joshua F Baker, Sogol Mostoufi-Moab, Jin Long, Babette Zemel, Said Ibrahim, Elena Taratuta, Mary B Leonard
PURPOSE: Rheumatoid arthritis (RA) is associated with adverse body composition profiles, and low muscle density due to accumulation of intramuscular fat. This study assessed associations between muscle density, body composition, muscle strength, and physical functioning in patients with RA and a reference group. METHODS: Patients with RA, ages 18-70 years, and healthy control participants completed whole-body DXA and peripheral quantitative CT (pQCT) to quantify appendicular lean mass (ALMI, kg/m2 ) and fat mass indices (FMI, kg/m2 ), visceral fat area, and muscle density...
February 26, 2018: Arthritis Care & Research
Malia N M Blue, Katie R Hirsch, Eric T Trexler, Abbie E Smith-Ryan
The purpose of the present study was to assess the validity of dual-energy X-ray absorptiometry (DXA) to estimate body volume (BV) for use in a four-compartment (4C) body composition model in an overweight/obese population. Body composition of 61 overweight/obese adults (Age: 37.3 ± 10.0 yrs; Height: 170.2 ± 9.5 cm; Body mass: 97.1 ± 17.4 kg) was measured by two methods: a criterion 4C model and a DXA-derived BV 4C model. For both models, bioelectrical impedance spectroscopy was used to estimate total body water; total body bone mineral content was measured by a full body DXA scan...
February 23, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Tanvi S Sharma, Gabriel Somarriba, Kristopher L Arheart, Daniela Neri, M Sunil Mathew, Patricia L Graham, Gwendolyn B Scott, Tracie L Miller
BACKGROUND: Combination antiretroviral therapy (cART) has allowed youth with perinatal HIV infection (PHIV+) to live into adulthood, but many youth may experience metabolic and body composition changes that predispose to greater cardiovascular disease (CVD) risk. This longitudinal study evaluated changes in body composition measured by dual x-ray absorptiometry (DXA) in a cohort of PHIV+ youth compared to HIV- controls over a 7-year period. METHODS: PHIV+ youth and HIV- controls were prospectively enrolled in a single-site study to assess nutrition and CVD risk...
February 22, 2018: Pediatric Infectious Disease Journal
Patrizia Calella, Giuliana Valerio, Matt Thomas, Helen McCabe, Jake Taylor, Malcolm Brodlie, Mario Siervo
OBJECTIVES: Body mass index (BMI) has significant limitations when assessing nutritional status in pediatric patients with cystic fibrosis (CF). We evaluated whether measurements of lean body mass (LBM) and fat mass (FM) are more sensitive nutritional parameters by testing their association with pulmonary function in adolescent patients with CF. METHODS: Sixty-nine male and female adolescents with CF were studied (age: 14.5 ± 2.3, BMI: 19.5 ± 2.3 kg/m2 )...
December 5, 2017: Nutrition
Diego Gomez-Arbelaez, Ana B Crujeiras, Ana I Castro, Miguel A Martinez-Olmos, Ana Canton, Lucia Ordoñez-Mayan, Ignacio Sajoux, Cristobal Galban, Diego Bellido, Felipe F Casanueva
Background: The resting metabolic rate (RMR) decrease, observed after an obesity reduction therapy is a determinant of a short-time weight regain. Thus, the objective of this study was to evaluate changes in RMR, and the associated hormonal alterations in obese patients with a very low-calorie ketogenic (VLCK)-diet induced severe body weight (BW) loss. Method: From 20 obese patients who lost 20.2 kg of BW after a 4-months VLCK-diet, blood samples and body composition analysis, determined by DXA and MF-Bioimpedance, and RMR by indirect calorimetry, were obtained on four subsequent visits: visit C-1, basal, initial fat mass (FM) and free fat mass (FFM); visit C-2, - 7...
2018: Nutrition & Metabolism
Sowmya Krishnan, Michael P Anderson, David A Fields, Madhusmita Misra
AIM: To determine the effect of childhood obesity and insulin resistance on bone health. METHODS: We conducted a cross sectional study in pubertal adolescents and young adults 13-20 years old who were either overweight/obese or normal weight. Participants were Tanner 3 or above for pubertal stage, and had fasting blood work done to measure glucose, insulin, C-reactive protein and lipid levels. Homeostatic model of insulin resistance (HOMA-IR) was calculated using the formula (Fasting Blood Glucose *Insulin/405)...
February 8, 2018: World Journal of Clinical Pediatrics
Barbara Resnick, J Richard Hebel, Ann L Gruber-Baldini, Gregory E Hicks, Marc C Hochberg, Denise Orwig, Marty Eastlack, Jay Magaziner
The purpose of this study was to test a model of the factors influencing physical activity, physical function and physical performance at 2 months post hip fracture and compare model fit between men and women. Age, cognitive status, comorbidities, pain, resilience, bone mineral density, total body lean mass, total body fat and grip strength were hypothesized to be directly and/or indirectly related to physical activity, physical function and physical performance. This analysis used data from the seventh Baltimore Hip Studies (BHS-7), a prospective cohort study that included 258 community-dwelling participants, 125 (48%) men and 133 (52%) women, hospitalized for treatment of a hip fracture; survey and objective data were obtained at 2 months post hip fracture...
February 15, 2018: Archives of Gerontology and Geriatrics
Jose Antonio, Anya Ellerbroek, Cassandra Evans, Tobin Silver, Corey A Peacock
Background: It has been posited that the consumption of extra protein (> 0.8 g/kg/d) may be deleterious to bone mineral content. However, there is no direct evidence to show that consuming a high-protein diet results in a demineralization of the skeleton. Thus, the primary endpoint of this randomized controlled trial was to determine if a high-protein diet affected various parameters of whole body and lumbar bone mineral content in exercise-trained women. Methods: Twenty-four women volunteered for this 6-month investigation ( n  = 12 control, n = 12 high-protein)...
2018: Journal of the International Society of Sports Nutrition
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