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body composition and DXA

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https://www.readbyqxmd.com/read/28445225/physical-fitness-and-body-composition-in-8-10-year-old-danish-children-are-associated-with-sports-club-participation
#1
Malte N Larsen, Claus M Nielsen, Christina Ørntoft, Morten Br Thomsen, Vibeke Manniche, Lone Hansen, Peter R Hansen, Jens Bangsbo, Peter Krustrup
We investigated whether physical fitness and body composition in 8-10-year-old Danish children are associated with sports club participation. The study included 423 schoolchildren, comprising 209 girls and 214 boys, of whom 67 and 74%, respectively, were active in sports clubs. Yo-Yo Intermittent Recovery level 1 for Children (YYIR1C), balance, jump and coordination tests, together with DXA scans, were used to determine exercise capacity and body composition. Children active in sports clubs had better (P<0...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28441766/fat-mass-is-positively-associated-with-estimated-hip-bone-strength-among-chinese-men-aged-50-years-and-above-with-low-levels-of-lean-mass
#2
Guiyuan Han, Yu-Ming Chen, Hua Huang, Zhanyong Chen, Lipeng Jing, Su-Mei Xiao
This study investigated the relationships of fat mass (FM) and lean mass (LM) with estimated hip bone strength in Chinese men aged 50-80 years (median value: 62.0 years). A cross-sectional study including 889 men was conducted in Guangzhou, China. Body composition and hip bone parameters were generated by dual-energy X-ray absorptiometry (DXA). The relationships of the LM index (LMI) and the FM index (FMI) with bone phenotypes were detected by generalised additive models and multiple linear regression. The associations between the FMI and the bone variables in LMI tertiles were further analysed...
April 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28423041/modeling-the-shape-and-composition-of-the-human-body-using-dual-energy-x-ray-absorptiometry-images
#3
John A Shepherd, Bennett K Ng, Bo Fan, Ann V Schwartz, Peggy Cawthon, Steven R Cummings, Stephen Kritchevsky, Michael Nevitt, Adam Santanasto, Timothy F Cootes
There is growing evidence that body shape and regional body composition are strong indicators of metabolic health. The purpose of this study was to develop statistical models that accurately describe holistic body shape, thickness, and leanness. We hypothesized that there are unique body shape features that are predictive of mortality beyond standard clinical measures. We developed algorithms to process whole-body dual-energy X-ray absorptiometry (DXA) scans into body thickness and leanness images. We performed statistical appearance modeling (SAM) and principal component analysis (PCA) to efficiently encode the variance of body shape, leanness, and thickness across sample of 400 older Americans from the Health ABC study...
2017: PloS One
https://www.readbyqxmd.com/read/28422532/effects-of-post-exercise-protein-intake-on-muscle-mass-and-strength-during-resistance-training-is-there-an-optimal-ratio-between-fast-and-slow-proteins
#4
Marina Fabre, Christophe Hausswirth, Eve Tiollier, Odeline Molle, Julien Louis, Alexandre Durguerian, Nathalie Neuveux, Xavier Bigard
While effects of the two classes of proteins found in milk (i.e. soluble proteins, including whey, and casein) on muscle protein synthesis have been well investigated after a single bout of resistance exercise (RE), the combined effects of these two proteins on the muscle responses to resistance training (RT) have not yet been investigated. Therefore, the aim of this study was to examine the effects of protein supplementation varying by the ratio between milk soluble proteins (fast-digested protein) and casein (slow-digested protein) on the muscle to a 9-week RT program...
April 19, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28421795/bmi-bmifat-bai-or-baifels-which-is-the-best-adiposity-index-for-the-detection-of-excess-weight
#5
Bruna Ramos Silva, Mirele Savegnago Mialich, Daniel J Hoffman, Alceu Afonso Jordão
OBJECTIVE: To compare the diagnostic performance of adiposity indeces body mass index (BMI), body mass index adjusted for fat mass (BMIfat), body adiposity index (BAI) and body adiposity index for the Fels Longitudinal Study sample (BAIFels) and the overweight detection in a sample of the Brazilian population. METHODS: Cross-sectional study with 501 individuals (female/male = 387/114), which underwent anthropometric measurements and body composition for subsequent calculation of adiposity indices...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421144/prevalence-of-sarcopenic-obesity-in-adults-with-class-ii-iii-obesity-using-different-diagnostic-criteria
#6
Carlene A Johnson Stoklossa, Arya M Sharma, Mary Forhan, Mario Siervo, Raj S Padwal, Carla M Prado
Background/Objective. Sarcopenic obesity (SO) is a hidden condition of reduced lean soft tissue (LST) in context of excess adiposity. SO is most commonly reported in older adults and both its risk and prevalence increase with age. A variety of body composition indices and cut points have been used to define this condition, leading to conflicting prevalence and risk prediction. Here, we investigate variability in the prevalence of SO in an adult sample of individuals with class II/III obesity (BMI ≥ 35 kg/m(2)) using different diagnostic criteria...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28414072/resistance-training-is-associated-with-spontaneous-changes-in-aerobic-physical-activity-but-not-overall-diet-quality-in-adults-with-prediabetes
#7
Tanya M Halliday, Jyoti Savla, Elaina L Marinik, Valisa E Hedrick, Richard A Winett, Brenda M Davy
BACKGROUND: Aerobic exercise interventions have been shown to result in alterations to dietary intake and non-exercise physical activity (PA). To date, the ability for resistance training (RT) to influence other health-related behaviors has not been examined. This study aimed to determine if initiation and maintenance of RT is associated with spontaneous changes in dietary quality and non-RT PA in adults with prediabetes. METHODS: Overweight/obese adults (n=170, BMI=32...
April 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28411023/comparison-of-bioelectrical-impedance-and-dxa-for-measuring-body-composition-among-adults-with-down-syndrome
#8
Michael R Esco, Brett S Nickerson, Angela R Russell
BACKGROUND: Individuals with Down syndrome (DS) have been shown to display high levels of adiposity and a unique body shape. Laboratory methods used to evaluate body composition might be too cumbersome for this special population. Therefore, field methods are desired due to their non-invasive nature. OBJECTIVE: to determine the agreement between dual energy x-ray absorptiometry (DXA) and bioelectrical impedance analysis (BIA) for measuring body fat percentage BF% and fat-free mass (FFM) among adults with DS...
March 22, 2017: Disability and Health Journal
https://www.readbyqxmd.com/read/28410328/manipulation-of-muscle-creatine-and-glycogen-changes-dual-x-ray-absorptiometry-estimates-of-body-composition
#9
Julia L Bone, Megan L Ross, Kristyen A Tomcik, Nikki A Jeacocke, Will G Hopkins, Louise M Burke
Standardizing a dual x-ray absorptiometry (DXA) protocol is thought to provide a reliable measurement of body composition. PURPOSE: We investigated the effects of manipulating muscle glycogen and creatine content independently and additively on DXA estimates of lean mass. METHOD: Eighteen well-trained male cyclists undertook a parallel group application of creatine loading (n = 9) (20 g·d for 5 d loading; 3 g·d maintenance) or placebo (n = 9) with crossover application of glycogen loading (12 v 6 g·kg BM per day for 48 h) as part of a larger study involving a glycogen-depleting exercise protocol...
May 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28409283/body-composition-and-lung-function-in-children-with-cystic-fibrosis-and-meconium-ileus
#10
Artemis Doulgeraki, Argyri Petrocheilou, Glykeria Petrocheilou, George Chrousos, Stavros-Eleftherios Doudounakis, Athanasios G Kaditis
The aim of this study was to explore whether history of meconium ileus (MI) at birth in children and adolescents with cystic fibrosis (CF) adversely affects body composition and lung function in later life. Data of children and adolescents with CF who underwent spirometry and DXA as part of their routine care were analyzed. Associations between MI (explanatory variable) and areal bone mineral density (total body less head-TBLH aBMD), lean tissue mass (LTM), and fat mass (FM) (outcomes) were assessed using general linear models...
April 13, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28399016/the-effects-of-beef-chicken-or-whey-protein-post-workout-on-body-composition-and-muscle-performance
#11
Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jason R Lane, Jocelyn L Gray, Jeremy M Partl, Daniel W Hayes, Gabriel J Wilson, Chase A Hollmer, Julie R Minivich, Jacob M Wilson
The purpose of this study was to determine the effects of post-workout consumption of beef protein isolate (Beef), hydrolyzed chicken protein (Chx) or whey protein concentrate (WPC), compared to a control on lean mass and strength during 8 weeks of resistance training. Forty-one males and females were randomized into four groups: WPC (m=5, f=5; Age (yrs)=19 ± 2, Height (cm)=171 ± 10, Mass (kg)= 74.60 ± 14.19), Beef (m=5, f=5; Age (yrs)=22 ± 4, Height (cm)=170 ± 7, Mass (kg)=70.13 ± 8.16), ChxC(m=5, f=6; Age (yrs)=21 ± 2, Height (cm)=169 ± 9, Mass (kg)=74...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28393498/the-impact-of-obesity-and-adiposity-on-inflammatory-markers-in-patients-with-rheumatoid-arthritis
#12
Michael D George, Jon T Giles, Patricia P Katz, Bryant R England, Ted R Mikuls, Kaleb Michaud, Alexis R Ogdie-Beatty, Said Ibrahim, Grant W Cannon, Liron Caplan, Brian C Sauer, Joshua F Baker
BACKGROUND: C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) are important disease activity biomarkers in rheumatoid arthritis (RA). This study aimed to determine to what extent obesity biases these biomarkers. METHODS: Body mass index (BMI) associations with CRP and ESR were assessed in two RA cohorts - 1) the cross-sectional Body Composition (BC) cohort (N = 451) including whole-body DXA measures of fat mass index, and 2) the longitudinal Veterans Affairs Rheumatoid Arthritis (VARA) registry (N = 1652), using multivariable models stratified by sex...
April 10, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28388669/reference-standards-for-body-fat-measures-using-ge-dual-energy-x-ray-absorptiometry-in-caucasian-adults
#13
Mary T Imboden, Whitney A Welch, Ann M Swartz, Alexander H K Montoye, Holmes W Finch, Matthew P Harber, Leonard A Kaminsky
BACKGROUND: Dual energy x-ray absorptiometry (DXA) is an established technique for the measurement of body composition. Reference values for these variables, particularly those related to fat mass, are necessary for interpretation and accurate classification of those at risk for obesity-related health complications and in need of lifestyle modifications (diet, physical activity, etc.). Currently, there are no reference values available for GE-Healthcare DXA systems and it is known that whole-body and regional fat mass measures differ by DXA manufacturer...
2017: PloS One
https://www.readbyqxmd.com/read/28382898/impact-of-food-and-fluid-intake-on-technical-and-biological-measurement-error-in-body-composition-assessment-methods-in-athletes
#14
Ava Kerr, Gary J Slater, Nuala Byrne
Two, three and four compartment (2C, 3C and 4C) models of body composition are popular methods to measure fat mass (FM) and fat-free mass (FFM) in athletes. However, the impact of food and fluid intake on measurement error has not been established. The purpose of this study was to evaluate standardised (overnight fasted, rested and hydrated) v. non-standardised (afternoon and non-fasted) presentation on technical and biological error on surface anthropometry (SA), 2C, 3C and 4C models. In thirty-two athletic males, measures of SA, dual-energy X-ray absorptiometry (DXA), bioelectrical impedance spectroscopy (BIS) and air displacement plethysmography (BOD POD) were taken to establish 2C, 3C and 4C models...
February 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28373014/the-combyn%C3%A2-ecg-adding-haemodynamic-and-fluid-leads-for-the-ecg-part-ii-prediction-of-total-body-water-tbw-extracellular-fluid-ecf-ecf-overload-fat-mass-fm-and-dry-appendicular-muscle-mass-appmm
#15
Falko Skrabal, Georg P Pichler, Mathias Penatzer, Johannes Steinbichl, Anna-Katharina Hanserl, Alfred Leis, Herbert Loibner
Simultaneous with a 12 channel ECG, body composition was analysed by segmental multi-frequency impedance analysis in 101 healthy subjects and in 118 patients with chronic heart failure (CHF, n= 40), chronic renal failure with haemodialysis (HD, n= 20), and miscellaneous internal diseases (n= 58). Whole body DXA and sodium bromide dilution were used as reference methods for total body water (TBW), extracellular fluid (ECF), appendicular muscle mass (AppMM) and fat mass (FM). Empirical prediction equations were developed in a randomized evaluation sample and then evaluated in unknowns...
March 31, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28372558/fatty-acid-composition-in-serum-cholesterol-esters-and-phospholipids-is-linked-to-visceral-and-subcutaneous-adipose-tissue-content-in-elderly-individuals-a-cross-sectional-study
#16
Fredrik Rosqvist, Helena Bjermo, Joel Kullberg, Lars Johansson, Karl Michaëlsson, Håkan Ahlström, Lars Lind, Ulf Risérus
BACKGROUND: Visceral adipose tissue (VAT) and truncal fat predict cardiometabolic disease. Intervention trials suggest that saturated fatty acids (SFA), e.g. palmitic acid, promote abdominal and liver fat storage whereas polyunsaturated fatty acids (PUFA), e.g. linoleic acid, prevent fat accumulation. Such findings require investigation in population-based studies of older individuals. We aimed to investigate the relationships of serum biomarkers of PUFA intake as well as serum levels of palmitic acid, with abdominal and total adipose tissue content...
April 4, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28370356/changes-in-bone-mineral-density-body-composition-vitamin-d-status-and-mineral-metabolism-in-urban-hiv-positive-south-african-women-over-12-months
#17
Matthew M Hamill, John M Pettifor, Kate A Ward, Shane A Norris, Ann Prentice
HIV infection and antiretroviral therapy (ART) are associated with bone loss and poor vitamin D status in Caucasian populations, though their relative roles are not known. No previous studies have examined longitudinal changes in areal bone mineral density (aBMD), measured by DXA, or in vitamin D status in HIV-positive African women. Of 247 premenopausal, urban, black African women from Soweto, South Africa, initially recruited, 187 underwent anthropometry, DXA scanning and blood and urine collections at both baseline and 12 months...
April 1, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28369088/trunk-lean-mass-and-its-association-with-4-different-measures-of-thoracic-kyphosis-in-older-community-dwelling-persons
#18
J Yamamoto, J Bergstrom, A Davis, D Wing, J T Schousboe, J F Nichols, D M Kado
BACKGROUND: The causes of age-related hyperkyphosis (HK) include osteoporosis, but only 1/3 of those most severely affected have vertebral fractures, suggesting that there are other important, and potentially modifiable causes. We hypothesized that muscle mass and quality may be important determinants of kyphosis in older persons. METHODS: We recruited 72 persons >65 years to participate in a prospective study designed to evaluate kyphosis and fall risk. At the baseline visit, participants had their body composition measures completed using Dual Energy X-ray Absorptiometry (DXA)...
2017: PloS One
https://www.readbyqxmd.com/read/28360432/dose-response-effects-of-aerobic-exercise-on-energy-compensation-in-postmenopausal-women-combined-results-from-two-randomized-controlled-trials
#19
J McNeil, D R Brenner, K S Courneya, C M Friedenreich
BACKGROUND/OBJECTIVE: Despite the clear health benefits of exercise, exercised-induced weight loss is often less than expected. The term 'exercise energy compensation' is used to define the amount of weight loss below what is expected for the amount of exercise energy expenditure. We examined the dose-response effects of exercise volume on energy compensation in postmenopausal women. PARTICIPANTS/METHODS: Data from Alberta Physical Activity and Breast Cancer Prevention (ALPHA) and Breast Cancer and Exercise Trial in Alberta (BETA) were combined for the present analysis...
March 31, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28351156/long-term-exercise-training-and-soy-isoflavones-to-improve-quality-of-life-and-climacteric-symptoms
#20
A Fontvieille, I J Dionne, E Riesco
OBJECTIVE: To verify the efficacy of phytoestrogen supplementation combined with aerobic and resistance training on the improvement of climacteric symptoms and health-related quality of life (HRQoL) in postmenopausal women. METHODS: From a pool of women who had participated in a 1-year intervention study and were randomly assigned to either exercise + phytoestrogen (EX + PHY) or exercise + placebo (EX + PL), a total of 31 healthy but overweight women (mean age 59...
March 29, 2017: Climacteric: the Journal of the International Menopause Society
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