scholarly journals Iron Deficiency and Neuroendocrine Regulators of Basal Metabolism, Body Composition and Energy Expenditure in Rats

Nutrients ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 631 ◽  
Author(s):  
Jorge Moreno-Fernandez ◽  
Javier Díaz-Castro ◽  
María Alférez ◽  
Inmaculada López-Aliaga
Keyword(s):  
Body Composition ◽  
Energy Expenditure ◽  
Body Fat ◽  
Lean Mass ◽  
Adrenocorticotropic Hormone ◽  
Iron Status ◽  
Basal Metabolism ◽  
Fe Deficiency ◽  
Control Group ◽  
Inverse Association

Although dietary iron is a determinant of iron status in animals, body fat mass has been reported to have an inverse association with iron status in human studies. The goal of this study was to determine the relationship between Fe homeostasis, body composition, energy expenditure and neuroendocrine regulators for severe Fe-deficiency anaemia. Forty male Wistar albino rats recently weaned were divided at random into two groups: the control group was fed the basal diet, AIN-93G diet (normal-Fe) and the anaemic group received a low-Fe diet for 40 days. Neuroendocrine parameters that regulate basal metabolism and appetite (thyroid hormones, ghrelin, glucose-dependent insulinotropic polypeptide (GIP), glucagon, insulin, adrenocorticotropic hormone and corticosterone), body composition, respiratory volumes, energy expenditure, haematological and biochemical were assessed. Total body fat was lower, whereas lean mass, free and total water were higher in the anemic group. O2 consumption, CO2 production, energy expenditure (EE) and respiratory quotient (RQ) were lower in the Fe-deficient animals. Triiodothyronine and thyroxine hormones decreased, while thyroid-stimulating hormone increased in the anemic group. Circulating levels of ghrelin were lower in the anemic group, while GIP, glucagon, insulin, corticosterone and adrenocorticotropic hormone levels were higher. Fe-deficiency impairs weight gain in the rats, with marked reductions in lean mass and body fat, indicating lower energy stores.

Body Composition, Dietary Intake, and Iron Status of Female Collegiate Swimmers and Divers

2006 ◽  
Vol 16 (3) ◽  
pp. 281-295 ◽  
Author(s):  
Heidi L. Petersen ◽  
C. Ted Peterson ◽  
Manju B. Reddy ◽  
Kathy B. Hanson ◽  
James H. Swain ◽  
...  
Keyword(s):  
Body Composition ◽  
Dietary Intake ◽  
Body Fat ◽  
Lean Mass ◽  
Iron Status ◽  
Dietary Quality ◽  
Whole Body ◽  
Vitamin B ◽  
Percentage Body Fat ◽  
X Ray

This study determined the effect of training on body composition, dietary intake, and iron status of eumenorrheic female collegiate swimmers (n = 18) and divers (n = 6) preseason and after 16 wk of training. Athletes trained on dryland (resistance, strength, fexibility) 3 d/wk, 1.5 h/d and in-water 6 d/wk, nine, 2-h sessions per week (6400 to 10,000 kJ/d). Body-mass index (kg/m2; P = 0.05), waist and hip circumferences (P ≤ 0.0001), whole body fat mass (P = 0.0002), and percentage body fat (P ≤ 0.0001) decreased, whereas lean mass increased (P = 0.028). Using dual-energy X-ray absorptiometry, we found no change in regional lean mass, but fat decreased at the waist (P = 0.0002), hip (P = 0.0002), and thigh (P = 0.002). Energy intake (10,061 ± 3617 kJ/d) did not change, but dietary quality improved with training, as refected by increased intakes of fber (P = 0.036), iron (P = 0.015), vitamin C (P = 0.029), vitamin B-6 (P = 0.032), and fruit (P = 0.003). Iron status improved as refected by slight increases in hemoglobin (P = 0.046) and hematocrit (P = 0.014) and decreases in serum transferrin receptor (P ≤ 0.0001). Studies are needed to further evaluate body composition and iron status in relation to dietary intake in female swimmers.

MO121ASSOCIATION BETWEEN BONE MINERAL DENSITY, BODY COMPOSITION AND SERUM SCLEROSTIN IN MALE STONE-FORMERS

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Fernanda Guedes Rodrigues ◽  
Igor Pietrobom ◽  
Milene Subtil Ormanji ◽  
Priscila Ligeiro Gonçalves Esper ◽  
Ana Cristina Matos ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Fat ◽  
Lean Mass ◽  
Independent Predictor ◽  
Urinary Calcium ◽  
Inverse Association ◽  
Mineral Density ◽  
Percentage Of Body Fat ◽  
Stone Formers ◽  
Calcium And Phosphorus

Abstract Background and Aims Reduced bone mineral density (BMD) has been observed in stone-formers (SF). Although obesity is considered a protective factor for bone health due to increased mechanical load, the role of muscle mass (lean) or body fat remains controversial. Sclerostin, an antagonist of the Wnt signaling pathway, is secreted by osteocytes and its actions involve the inhibition of bone formation, FGF23 stimulation, and increased urinary calcium and phosphorus excretion. Recent studies also indicate its association with body composition. The aim of the present study was to evaluate the relationship between BMD and body composition with serum sclerostin levels in male SF. Method This is a retrospective study, based on medical records of SF with available data of BMD and body composition, serum and urinary biochemistry and hormonal measurements including sclerostin. BMD had been assessed at lumbar spine (L1-L4), femoral neck (FN) and total femur (TF) and body composition (fat and lean mass) in a dual energy X-ray absorptiometry (DXA). Results Fifty-five male SF (37.2 ± 9.3 years) were included. Patients were divided into tertiles according to the percentage of body fat (T1, n = 19, 8.7-20.0 %; T2, n = 20, 20.1-26.0 %; T3, n = 16, 26.1-38.0 %). There was no statistical difference in BMD in any of the sites between these tertiles. Higher urinary sodium and serum sclerostin were observed in T3 versus T1 (280 ± 93 vs 199 ± 75 mEq/day, p <0.05; 33.6 ± 14.7 vs 24.7 ± 8.3 pmol/L, p<0.05, respectively). There was an inverse association between serum sclerostin and lean mass (β= -0.30, p=0.001) and direct association with fat mass (β=0.40, p=0.001), urinary calcium and phosphorus (β=0.29, p=0.02; β=0.32, p=0.01). In a multivariate linear regression model, lean mass was an independent predictor of BMD at L1-L4, FN and TF (β= 0.70, p<0.001; β=0.70, p<0.001; β=0.57, p=0.00, respectively) and at the TF there was also an inverse association between body fat and PTH (β= –0.51, p= 0.03; β= –0.25, p= 0.03). Conclusion These data suggest that male SF with a higher percentage of body fat had higher levels of serum sclerostin, which were directly associated with calciuria and phosphaturia but not with BMD. In addition, lean mass was an independent predictor of BMD. Further studies are needed to determine long-term effects of serum sclerostin levels upon bone formation in SF.

Body Mass and Body Composition Changes over 7 Years in a Male Professional Rugby Union Team

2021 ◽  
Author(s):  
Clíodhna McHugh ◽  
Karen Hind ◽  
Aoife O'Halloran ◽  
Daniel Davey ◽  
Gareth Farrell ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Body Fat ◽  
Lean Mass ◽  
Total Mass ◽  
Rugby Union ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Dxa Scans ◽  
Composition Changes

AbstractThe purpose of this study was to investigate longitudinal body mass and body composition changes in one professional rugby union team (n=123), (i) according to position [forwards (n=58) versus backs (n=65)], analysis of players with 6 consecutive seasons of DXA scans (n=21) and, (iii) to examine differences by playing status [academy and international], over 7 years. Players [mean age: 26.8 y, body mass index: 28.9+kg.m2] received DXA scans at fourtime points within each year. A modest (but non-significant) increase in mean total mass (0.8 kg) for professional players was reflected by increased lean mass and reduced body fat mass. At all-time points, forwards had a significantly greater total mass, lean mass and body fat percentage compared to backs (p<0.05). Academy players demonstrated increased total and lean mass and decreased body fat percentage over the first 3 years of senior rugby, although this was not significant. Senior and academy international players had greater lean mass and lower body fat percentage (p<0.05) than non-international counterparts. Despite modest increases in total mass; reflected by increased lean mass and reduced fat mass, no significant changes in body mass or body composition, irrespective of playing position were apparent over 7 years.

Comparison of energy expenditure, body composition, metabolic disorders, and energy intake between obese children with a history of craniopharyngioma and children with multifactorial obesity

2015 ◽  
Vol 28 (11-12) ◽  
Author(s):  
Ilanit Bomer ◽  
Carola Saure ◽  
Carolina Caminiti ◽  
Javier Gonzales Ramos ◽  
Graciela Zuccaro ◽  
...  
Keyword(s):  
Body Composition ◽  
Energy Expenditure ◽  
Energy Intake ◽  
Positive Association ◽  
Bioelectrical Impedance ◽  
Fat Free Mass ◽  
Control Group ◽  
Model Assessment ◽  
Obese Children ◽  
Mass Percentage

AbstractCraniopharyngioma is a histologically benign brain malformation with a fundamental role in satiety modulation, causing obesity in up to 52% of patients.To evaluate cardiovascular risk factors, body composition, resting energy expenditure (REE), and energy intake in craniopharyngioma patients and to compare the data with those from children with multifactorial obesity.All obese children and adolescents who underwent craniopharyngioma resection and a control group of children with multifactorial obesity in follow-up between May 2012 and April 2013.Anthropometric measurements, bioelectrical impedance, indirect calorimetry, energy intake, homeostatic model assessment insulin resistance (HOMA-IR), and dyslipidemia were evaluated.Twenty-three patients with craniopharyngioma and 43 controls were included. Children with craniopharyngioma-related obesity had a lower fat-free mass percentage (62.4 vs. 67.5; p=0.01) and a higher fat mass percentage (37.5 vs. 32.5; p=0.01) compared to those with multifactorial obesity. A positive association was found between %REE and %fat-free mass in subjects with multifactorial obesity (68±1% in normal REE vs. 62.6±1% in low REE; p=0.04), but not in craniopharyngioma patients (62±2.7 in normal REE vs. 61.2±1.8% in low REE; p=0.8). No differences were found in metabolic involvement or energy intake.REE was lower in craniopharyngioma patients compared to children with multifactorial obesity regardless of the amount of fat-free mass, suggesting that other factors may be responsible for the lower REE.

scholarly journals Leptin Responsiveness in Chronically Decerebrate Rats

Endocrinology ◽  
2007 ◽  
Vol 148 (10) ◽  
pp. 4623-4633 ◽  
Author(s):  
Ruth B. S. Harris ◽  
Timothy J. Bartness ◽  
Harvey J. Grill
Keyword(s):  
Energy Expenditure ◽  
Body Fat ◽  
Serum Testosterone ◽  
Control Group ◽  
Energy Status ◽  
Lower Serum ◽  
Peripheral Tissues ◽  
Leptin Receptors ◽  
Ad Libitum ◽  
Ad Libitum Intake

Peripheral infusions of physiological doses of leptin decrease body fat mass, but it is not known whether this results from direct effects on peripheral tissue or activation of central leptin receptors. In this study, we infused chronically decerebrate (CD) rats, in which the forebrain was surgically isolated from the caudal brainstem, with 60 μg leptin/d or PBS for 14 d from ip mini-osmotic pumps. The CD rats were tube fed an amount of food equivalent to the intake of ad libitum-fed intact controls or 75% of this amount to account for their reduced energy expenditure. Control rats fed ad libitum or tube fed 75, 100, or 125% of their ad libitum intake also were peripherally infused with leptin or PBS. CD rats had a lower serum testosterone, energy expenditure, and lean body mass compared with controls but had increased levels of adiponectin and leptin and were obese. Leptin increased body fat and decreased energy expenditure during the light period in 100%-fed CD rats, but not 75%-fed CD rats. Leptin decreased body fat of ad libitum- and 100%-fed but not 75%-fed or 125%-fed intact controls. Energy expenditure did not change in any control group. These results show that leptin can change body fat independent of a change in food intake or energy expenditure, that the forebrain normally prevents leptin from inhibiting energy expenditure through mechanisms initiated in the caudal brainstem or peripheral tissues, and that the leptin response in both intact and CD rats is determined by the energy status of the animal.

scholarly journals The Relationship between Body Composition, Dietary Intake, Physical Activity, and Pulmonary Status in Adolescents and Adults with Cystic Fibrosis

Nutrients ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 310
Author(s):  
Kevin J. Scully ◽  
Laura T. Jay ◽  
Steven Freedman ◽  
Gregory S. Sawicki ◽  
Ahmet Uluer ◽  
...  
Keyword(s):  
Physical Activity ◽  
Cystic Fibrosis ◽  
Body Composition ◽  
Dietary Intake ◽  
Healthy Volunteers ◽  
Clinical Outcomes ◽  
Body Fat ◽  
Lean Mass ◽  
Cross Sectional ◽  
Adolescents And Adults

Measures of body fat and lean mass may better predict important clinical outcomes in patients with cystic fibrosis (CF) than body mass index (BMI). Little is known about how diet quality and exercise may impact body composition in these patients. Dual X-ray absorptiometry (DXA) body composition, 24-h dietary recall, and physical activity were assessed in a cross-sectional analysis of 38 adolescents and adults with CF and 19 age-, race-, and gender-matched healthy volunteers. Compared with the healthy volunteers, participants with CF had a lower appendicular lean mass index (ALMI), despite no observed difference in BMI, and their diets consisted of higher glycemic index foods with a greater proportion of calories from fat and a lower proportion of calories from protein. In participants with CF, pulmonary function positively correlated with measures of lean mass, particularly ALMI, and negatively correlated with multiple measures of body fat after controlling for age, gender, and BMI. Higher physical activity levels were associated with greater ALMI and lower body fat. In conclusion, body composition measures, particularly ALMI, may better predict key clinical outcomes in individuals with CF than BMI. Future longitudinal studies analyzing the effect of dietary intake and exercise on body composition and CF-specific clinical outcomes are needed.

Energy Expenditure and Body Fat Distribution in Mohawk Children

PEDIATRICS ◽  
1995 ◽  
Vol 95 (1) ◽  
pp. 89-95
Author(s):  
Michael I. Goran ◽  
Mary Kaskoun ◽  
Rachel Johnson ◽  
Charlene Martinez ◽  
Benson Kelly ◽  
...  
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Native Americans ◽  
Energy Expenditure ◽  
Total Energy ◽  
Body Fat ◽  
Resting Energy Expenditure ◽  
Fat Distribution ◽  
Total Energy Expenditure ◽  
Fat Free Mass

Objective. Epidemiologic studies suggest that Native Americans, including the Mohawk people, have a high prevalence of obesity, diabetes, and cardiovascular risk. However, current information on alterations in related variables such as energy metabolism and body composition in Native Americans is almost exclusively limited to already obese Pima adults living in the Southwest. The aim of this study was to characterize energy metabolism and body composition in young Mohawk children (17 girls, 11 boys; aged 4 to 7 years) as compared to Caucasian children (36 girls, 34 boys; aged 4 to 7 years). Total energy expenditure was measured by doubly labeled water, postprandial resting energy expenditure by indirect calorimetry, and activity energy expenditure was derived from the difference between total and resting energy expenditure. Fat and fat free mass were estimated from bioelectrical resistance, and body fat distribution was estimated from skinfolds and circumferences. Results. There were no significant effects of ethnic background or sex on body weight, height, or body mass index. Fat free mass was significantly higher in boys and fat mass was significantly higher in girls, with no effect of ethnic background. Chest skinfold thickness, the ratio of trunk skinfolds:extremity skinfolds, and the waist:hip ratio were significantly higher in Mohawk children by 2.5 mm, 0.09 units, and 0.03 units, respectively, independent of sex and fat mass. Total energy expenditure was significantly higher in Mohawk children compared to Caucasian (100 kcal/day in girls, 150 kcal/day in boys), independent of fat free mass and sex, due to a significantly higher physical activity-related energy expenditure. Conclusion. These data suggest that: 1) body fat is more centrally distributed in Mohawk relative to Caucasian children, and this effect is independent of sex and body fat content; 2) Mohawk children have a greater total energy expenditure than Caucasian children, independent of fat free mass, due to greater physical activity-related energy expenditure.

scholarly journals Serial Assessment of Body Fat and Fat-Free Mass Accretion in Very Preterm Infants: A Randomized Trial

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1067-1067
Author(s):  
Ariel Salas ◽  
Maggie Jerome ◽  
Paula Chandler-Laney ◽  
Namasivayam Ambalavanan
Keyword(s):  
Body Composition ◽  
Preterm Infants ◽  
Body Fat ◽  
Intervention Group ◽  
Feeding Practices ◽  
Control Group ◽  
Very Preterm Infants ◽  
Very Preterm ◽  
Study Participants ◽  
Serial Assessments

Abstract Objectives To incorporate assessment of body composition in the routine care of preterm infants to guide feeding practices before and after hospital discharge. Methods Very preterm infants with gestational ages between 29 and 32 weeks of gestation were included. Infants with gastrointestinal or neurologic malformations and terminal illness needing to limit or withhold support were excluded. All study participants were eligible for serial assessments of body composition between birth and 32 weeks PMA, at 36 weeks PMA or hospital discharge, and at 3 months of corrected age. Infants randomly assigned to the intervention group had the information about infant body composition available to the clinicians caring for them (including reference data). Infants randomly assigned to the control group also underwent serial assessments, but this information on infant body composition was not shown to the clinicians caring for them. The primary outcome was % body fat (%BF) estimated by air displacement plethysmography. Results Fifty very preterm infants were randomized. Mean birthweight of study participants was 1387 g +/– SD 283 and median gestational age at birth was 30 weeks (IQR: 30 – 31). Sociodemographic characteristics did not differ between groups. Mean %BF between birth and 32 weeks PMA (n = 45) was 6 +/– 4, mean %BF at 36 weeks PMA (n = 35) was 14 +/– 4, and mean %BF at 3 months of corrected age (n = 25) was 20 +/– 4. Mean differences in %BF between the intervention group and the control group were not statistically significant at 36 weeks PMA (−0.8) or 3 months corrected age (−1.2). Similarly, feeding practices during hospitalization did not differ between groups. Growth outcomes did not differ between groups. Conclusions Serial assessments of body composition at birth, 36 weeks PMA, and 3 months corrected age in very preterm infants show increased %BF in both intervention and control groups without an apparent influence of the intervention on feeding practices. While 36 weeks PMA has been a common assessment point for research purposes, body composition assessments may need to be done at earlier intervals in order to make meaningful clinical changes to the infant diet in order to affect body composition later in infancy. Funding Sources UAB OHDRC.

scholarly journals The Use of SenseWear Armband for Assessment of Daily Energy Expenditure and the Relation to Body Fat Distribution and Nutritional Intake in Lean Women with Polycystic Ovary Syndrome

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Gulcan Arusoglu
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Energy Expenditure ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Nutritional Intake ◽  
Control Group ◽  
Ovary Syndrome ◽  
Sensewear Armband ◽  
Segmental Body Composition

Objective. To evaluate nutritional intake, energy expenditure, and segmental body composition in lean women with polycystic ovary syndrome (PCOS) and compare them with age- and body mass index- (BMI-) matched control women. Methods. 32 nonobese patients with PCOS and 31 age- and BMI-matched healthy women were included in the study. Energy expenditure and physical activity level were assessed by metabolic Holter equipment (SenseWear Armband, SWA) which was never previously used in lean PCOS population. Food intake is recorded with 24 hours of food record. Segmental body composition analysis was assessed by bioelectrical impedance analyses (BIA). Results. Mean BMI was 22.64 ± 3.64 and 21.55 ± 2.77 kg/m2 (p=0.185) in PCOS and control groups, respectively. Mean age was 22.03 ± 4.21 and 21.71 ± 2.67 year (p=0.720), respectively. No significant differences were found in total energy intake and percentage of carbohydrates, fats, and other micronutrients (p>0.05). Energy percentage of proteins (%12.73 ± 1.98, p=0.008) was statistically lower in subjects versus the control group. The measurements of physical activity duration (PAD) (1.40 ± 0.87/2.18 ± 0.99 hours, p=0.002), active energy expenditure (372.35 ± 198.32/494.10 ± 186.50 kcal, p=0.018), and step counting (9370.03 ± 3587.49/11730.90 ± 3564.31 steps, p=0.013) measurement of the PCOS group were lower than the control group, respectively. Conclusions. New diagnosed women with PCOS had similar distribution and quantity of body fat parameters and nutritional status when compared to healthy women. Control subjects were found more active in energy expenditure.

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