Effect of gender, body composition, and equilibration time on the 2H-to-18O dilution space ratio

2006 ◽  
Vol 263 (6) ◽  
pp. E1119-E1124 ◽  
Author(s):  
M. I. Goran ◽  
E. T. Poehlman ◽  
K. S. Nair ◽  
E. Danforth
Keyword(s):  
Body Composition ◽  
Bioelectrical Impedance ◽  
Gender Effect ◽  
The Body ◽  
Equilibration Time ◽  
Doubly Labeled Water ◽  
Sources Of Variation ◽  
Chemical Availability ◽  
The Mean ◽  
Space Ratio

Physiological sources of variation in the 2H-to-18O dilution space ratio (DSR) were examined in 34 males and 20 females (4-78 yr; 14.7-143.2 kg; 1.8-61.0% body fat). Dilution spaces were obtained by time 0 extrapolation of isotope washout over 10-14 days, and body composition was obtained by underwater weight (adults) or bioelectrical impedance (children). The mean DSR was 1.050 +/- 0.015 (range 1.029-1.111), significantly higher (P < 0.001) than the traditionally assumed value of 1.029 based on exchange over 4 h. Use of the value 1.029 causes a systematic 8% overestimate of energy expenditure from doubly labeled water, relative to use of the value 1.05. The DSR was not related to body composition or age but was significantly higher (P < 0.05) in males (1.052 +/- 0.016) than in females (1.044 +/- 0.012). This gender effect was not explained by differences in the number of exchangeable hydrogens in the body. We conclude 1) variation in the 2H-to-18O DSR is not explained by body composition but is influenced by the chemical availability of exchangeable hydrogens to undergo exchange; 2) because the DSR is not easily predicted, use of the observed dilution spaces are recommended; 3) if a fixed DSR is used, values of 1.044 and 1.052 are recommended in females and males, respectively.

Effect of gender, body composition, and equilibration time on the 2H-to-18O dilution space ratio

1992 ◽  
Vol 263 (6) ◽  
pp. E1119-E1124 ◽  
Author(s):  
M. I. Goran ◽  
E. T. Poehlman ◽  
K. S. Nair ◽  
E. Danforth
Keyword(s):  
Body Composition ◽  
Bioelectrical Impedance ◽  
Gender Effect ◽  
The Body ◽  
Equilibration Time ◽  
Doubly Labeled Water ◽  
Sources Of Variation ◽  
Chemical Availability ◽  
The Mean ◽  
Space Ratio

Physiological sources of variation in the 2H-to-18O dilution space ratio (DSR) were examined in 34 males and 20 females (4-78 yr; 14.7-143.2 kg; 1.8-61.0% body fat). Dilution spaces were obtained by time 0 extrapolation of isotope washout over 10-14 days, and body composition was obtained by underwater weight (adults) or bioelectrical impedance (children). The mean DSR was 1.050 +/- 0.015 (range 1.029-1.111), significantly higher (P < 0.001) than the traditionally assumed value of 1.029 based on exchange over 4 h. Use of the value 1.029 causes a systematic 8% overestimate of energy expenditure from doubly labeled water, relative to use of the value 1.05. The DSR was not related to body composition or age but was significantly higher (P < 0.05) in males (1.052 +/- 0.016) than in females (1.044 +/- 0.012). This gender effect was not explained by differences in the number of exchangeable hydrogens in the body. We conclude 1) variation in the 2H-to-18O DSR is not explained by body composition but is influenced by the chemical availability of exchangeable hydrogens to undergo exchange; 2) because the DSR is not easily predicted, use of the observed dilution spaces are recommended; 3) if a fixed DSR is used, values of 1.044 and 1.052 are recommended in females and males, respectively.

Prediction of the body composition of live cattle

1972 ◽  
Vol 78 (3) ◽  
pp. 505-508 ◽  
Author(s):  
D. A. Little ◽  
J. G. Morris
Keyword(s):  
Body Composition ◽  
Tritiated Water ◽  
Live Weight ◽  
The Body ◽  
Equilibration Time ◽  
Live Animal ◽  
Free Weight ◽  
The Mean ◽  
Total Body

SUMMARYTwo methods of determining body composition in live cattle have been compared with the composition of the cattle as determined by chemical analysis. Total body water (TBW) was estimated from tritiated water (TOH) dilution, and circulating redcell volume (RCV) estimated from measurements of plasma volume and haematocrit. TBW was very closely related to fat-free weight and fat weight as a percentage of live weight (LW) in eight cattle ranging from 3 to 34% fat. TOH space was more precise than RCV in the estimation of the various chemical fractions of the live animal.TOH injected intravenously equilibrated with ruminal water in 8–10 h; one could be confident that equilibration had occurred 10 h after injection, and equilibration time was not affected by previous restriction of feed and water. The mean biological half life of TOH was 4·2 ± 0·4 days. Equations are presented for the practical determination of the various compartments.

scholarly journals Ichthyometry and electrical bioimpedance analysis to estimate the body composition of tambatinga

2014 ◽  
Vol 44 (2) ◽  
pp. 279-286 ◽  
Author(s):  
Francisco Teixeira Andrade ◽  
Márvio Lobão Teixeira de Abreu ◽  
João Batista Lopes ◽  
Agustinho Valente de Figueiredo ◽  
Maria de Nazaré Bona Alencar Araripe ◽  
...  
Keyword(s):  
Body Composition ◽  
Water Content ◽  
Correlation Coefficients ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
The Body ◽  
Composition Analysis ◽  
Average Weight ◽  
Electrical Bioimpedance ◽  
The Relationship

Body composition analysis is relevant to characterize the nutritional requirements and finishing phase of fish. The aim of this study was to investigate the relationship between ichthyometric (weight, total and standard length, density and yields), bromatological (fat, protein, ash and water content) and bioelectrical-impedance-analysis (BIA) (resistance, reactance, phase angle and composition indexes) variables in the hybrid tambatinga (Colossoma macropomum × Piaractus brachypomus). In a non-fertilized vivarium, 520 juveniles were housed and fed commercial rations. Then, 136 days after hatching (DAH), 15 fish with an average weight of 37.69 g and average total length of 12.96 cm were randomly chosen, anesthetized (eugenol) and subjected to the first of fourteen fortnightly assessments (BIA and biometry). After euthanasia, the following parts were weighed: whole carcass with the head, fillet, and skin (WC); fillet with skin (FS); and the remainder of the carcass with the head (CH). Together, FS and CH were ground and homogenized for the bromatological analyses. Estimates of the body composition and yields of tambatinga, with models including ichthyometric and BIA variables, showed correlation coefficients ranging from 0.81 (for the FS yield) to 1,00 (for the total ash). Similarly, models that included only BIA variables had correlation coefficients ranging from 0.81 (FS and CH yields) to 0.98 (for the total ash). Therefore, in tambatinga, the BIA technique allows the estimation of the yield of the fillet with skin and the body composition (water content, fat, ash, and protein). The best models combine ichthyometric and BIA variables.

Bioelectrical impedance analysis of the body composition of children and adolescents with sickle cell disease

2002 ◽  
Vol 140 (6) ◽  
pp. 681-687 ◽  
Author(s):  
Dorothy J. VanderJagt ◽  
Paul Harmatz ◽  
Ajovi B. Scott-Emuakpor ◽  
Elliot Vichinsky ◽  
Robert H. Glew
Keyword(s):  
Body Composition ◽  
Sickle Cell Disease ◽  
Children And Adolescents ◽  
Sickle Cell ◽  
Bioelectrical Impedance Analysis ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
The Body ◽  
Cell Disease

Association Between Body Composition with Pulmonary Function Tests

2020 ◽  
Author(s):  
Hamidreza Pouragha ◽  
Hosein Kazemi ◽  
Gholamreza Pouryaghoub ◽  
Ramin Mehrdad
Keyword(s):  
Body Composition ◽  
Pulmonary Function ◽  
Visceral Fat ◽  
Pulmonary Function Tests ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Fat Free Mass ◽  
The Other ◽  
Inverse Association ◽  
Cross Sectional

Abstract Background: Why is bodyweight not a predictor of lung function, however, height, sex, race, and age are predictors of lung capacity and function. In this study, we want to investigate the association between body composition and pulmonary function. And as much as possible, answer the question of why bodyweight is not predictive of lung function.Method: This cross-sectional study was performed among 2967 employees of Tehran University of Medical Sciences (TUMS) who participated in the TUMS Employees Cohort (TEC) study. The body composition of the participants was measured using the Bioelectrical Impedance Analysis (BIA) method. Anthropometric variables were also measured as a confounder. The pulmonary function of participants was assessed by a forced spirometry test.Results: The correlation of BIA values including fat-free mass and total body water with a pulmonary function such as FEV1, FVC, and FEF25-75 is higher than most anthropometric values such as weight, wrist circumference, and the waist to hip ratio. Also, in regression analysis, age and sex had an association with pulmonary function, but the weight did not show a significant relationship. On the other hand, fat-free mass and visceral fat were significantly associated with pulmonary function. One is direct and the other is inverse.Conclusion: The hypothesis that the results of this study created in the minds of the authors were that; The direct association of fat-free mass with pulmonary function may be ineffective by the inverse association of visceral fat with pulmonary function, leading to a lack of association between weight and pulmonary function.

Bioelectrical impedance analysis in the measurement of the body composition of surgical patients

1992 ◽  
Vol 79 (5) ◽  
pp. 421-423 ◽  
Author(s):  
K. C. H. Fearon ◽  
R. A. Richardson ◽  
J. Hannan ◽  
S. Cowan ◽  
W. Watson ◽  
...  
Keyword(s):  
Body Composition ◽  
Bioelectrical Impedance Analysis ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
The Body ◽  
Surgical Patients

Assessment of body composition measure of bioelectrical impedance in patients operated for pancreatic, gastric and colorectal cancer

2020 ◽  
Vol 92 (1) ◽  
pp. 1-5
Author(s):  
Przemysław Dzierżek ◽  
Krzysztof Kurnol ◽  
Wojciech Hap ◽  
Ewelina Frejlich ◽  
Agata Diakun ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Body Weight ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Intracellular Water ◽  
University Hospital ◽  
Major Surgery ◽  
Average Weight ◽  
Neoplastic Disease

Introduction An adequate level of nutrition is important in the period of reconvalescence in patients undergoing major surgery, in particular due to neoplastic disease. Bioelectrical impedance (BIA - Bioelectrical Impedance Analysis) is a widely used technique for assessing body composition. BIA measurement is easy, fast, cheap and repeatable. Material and methods The body composition of 56 patients (25 women and 31 men) was assessed with bioelectrical impedance analysys. All patients was hospitalized and operated in the Department of General and Oncological Surgery, Wrocław Clinical University Hospital in 2017-2018. Results The average weight loss on the 4th postoperative day is 1.32%, and at discharge from hospital 4.23% of body weight in relation to body weight at admission to the ward. The percentage of fat tissue (FM-Fatt Mass) in patients admitted to the ward is above the normal range. The change in body weight composition in hospitalized patients is mainly related to the amount of adipose tissue and the amount of extra- and intracellular water (ECW-Extracellular Water, ICW-Intracellular Water). Conclusions Bioelectrical impedance can be an easy and effective method to assess body composition and its change in patients undergoing major surgery. Patients operated on due to pancreatic cancer lose the highest percentage of body weight until discharge from the ward in relation to body weight at the time of admission to the ward from the analyzed groups. Weight loss mainly occurs as fat loss (FM).

Composição Corporal de Adultos Com Síndrome de Down e Excesso de Peso Atendidos em Hospital Universitário

2018 ◽  
Vol 22 (1) ◽  
pp. 47
Author(s):  
Leiliane Cruz Reis ◽  
Livia Maria Machado Nunes ◽  
Maria Edilma Da Silva Bezerra ◽  
Rosilene Reis Della Noce
Keyword(s):  
Body Composition ◽  
Down Syndrome ◽  
Overweight And Obesity ◽  
The Body ◽  
Fat Free Mass ◽  
University Hospital ◽  
Normal Range ◽  
Cross Sectional ◽  
The Mean ◽  
The City

Pessoas com Síndrome de Down podem, frequentemente, apresentar doença cardíaca congênita, hipotireoidismo, distúrbios gastrointestinais e tendência ao sobrepeso e obesidade, comprometendo gravemente a saúde. O objetivo deste trabalho foi descrever a composição corporal de adultos com Síndrome de Down - SD e excesso de peso, atendidos em um Hospital Universitário. Trata-se de um estudo transversal e descritivo realizado na cidade de Belém do Pará, no ano de 2017, onde os participantes com SD, foram avaliados para determinação da composição corporal com a utilização do aparelho de bioimpedância elétrica InBody230. Foram avaliados 13 indivíduos de ambos os sexos com idades variando entre 20 e 40 anos. A média de peso dos indivíduos do sexo masculino e feminino foi de 71,8 kg e 69,2 kg respectivamente, a média de Índice de Massa Corporal - IMC foi de 31,27 kg/m² para os homens e 34,08 kg/m² para as mulheres, classificada em obesidade. A maioria dos indivíduos apresenta Massa Muscular Esquelética - MME e Massa Livre de Gordura - MLG dentro da faixa de normalidade, porém os valores de Massa de Gordura (MG), assim como a Relação Cintura Quadril - RCQ de todos os indivíduos estão elevados. O acompanhamento individualizado da composição corporal, por meio da bioimpedância elétrica, mostrou ser um instrumento eficaz para avaliação do estado nutricional dessa população.Palavras-chave: Síndrome de Down. Composição Corporal. Bioimpedância Elétrica.AbstractPeople with Down Syndrome can often have congenital heart disease, hypothyroidism, gastrointestinal disorders, and tendency to overweight and obesity severely compromising health. The objective of this study was to describe the body composition in adults with Down Syndrome and overweight treated in a University Hospital. This is a cross-sectional and descriptive study carried out in the city of Belém do Pará in 2017, where the participants with DS, were evaluated to determine the body composition with the use of InBody 230 electric bioimpedance device. Eight individuals of both sexes with ages varying between 20 and 40 years were evaluated. The mean weight of the male and female subjects was 71.8 kg and 69.2 kg respectively, the mean Body Mass Index (BMI) was 31.27 kg / m² for men and 34.08 kg / m² for women, classified as obesity. The majority of individuals had a Skeletal Muscle Mass (MME) and Fat Free Mass (MLG) within the normal range, but the values of Mass of Fat (MG), as well as the Hip Waist Ratio (WHR) of all individuals are high. The individualized monitoring of body composition through electric bioimpedance proved to be an effective tool for assessing the nutritional status of this population.Keywords: Down Syndrome. Body composition. Electric impedance.

scholarly journals Body composition and Hashimoto disease

2021 ◽  
pp. 345-352
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Body Fat ◽  
Bioelectrical Impedance ◽  
Good Health ◽  
The Body ◽  
Composition Analysis ◽  
Tissue Water ◽  
Healthy Women ◽  
Hashimoto Disease

Background. Body weight or BMI do not provide any information about the content of muscle tissue, water content, body fat and its distribution in the body. Thyroid dysfunction is associated with a change in body weight, but also its composition regardless of physical activity. Objective. The aim of the study was to compare the body composition of female patients diagnosed with Hashimoto's disease (HD) and the body composition of healthy women who have never been treated before due to thyroid diseases. Materials and methods. The study involved 47 women diagnosed with Hashimoto disease (HD) and 65 women declaring good health. Body mass and height and body composition analysis using bioelectrical impedance analysis were performed using the TANITA multi-frequency segmental body composition analyzer. Variables having a distribution similar to the normal distribution were analyzed by the analysis of variance (ANOVA), otherwise the Kruskal-Wallis test was used. Results. Women with Hashimoto disease were characterized by significantly higher values of body weight, and thus BMI index, than healthy women (respectively 73.64 kg vs. 64.36 kg, p <0.0001; 27.65 kg/m2 vs. 23.95 kg/m2, p <0.001).The problem of excess body fat in the body statistically significantly more often affected women with Hashimoto disease than healthy women (44.7% vs. 13.8%, p <0.001). Conclusions. The results regarding the weight and composition of the patients treated for thyroid disease indicate the need for further in-depth analyses. Even small abnormalities of the thyroid function in the range of reference values may result in the development of many adverse changes in the body.

scholarly journals Internal Proportions of The Body Composition in Members of the Female National Tennis Team of Poland

2018 ◽  
Vol 2 (73) ◽  
Author(s):  
Marina Jagiello ◽  
Wladislaw Jagiello
Keyword(s):  
Body Composition ◽  
Body Size ◽  
Body Mass ◽  
Body Height ◽  
The Body ◽  
Control Group ◽  
Tennis Players ◽  
National Team ◽  
The Mean ◽  
Total Body

Contemporary anthropological research confirms the fact that body composition is one of the basic elements differentiating athletes from persons not practising sport. Among athletes representing various branches of sport there are also significant differences in their body composition. Internal proportions of the body composition of an athlete, or a selected group of athletes, is an especially important yet little researched issue of sports anthropology. This problem is still topical in sports games, especially in tennis. Therefore, the aim of the study was to determine internal proportions of the body composition of female tennis players from the Polish national team in comparison to persons who do not practice sport professionally. The study involved female athletes of the Polish national tennis team (n = 10). The study was carried out in a training camp from 28 September to 9 October 2002 in Zakopane — Centre of Sports Preparation. Athletes’ age was 16—20 (18.1 ± 1.4) years, and the training experience 8—12 years (10.5 ± 1.8). The mean body height for the group members was 171.9 ± 6.7 cm and the mean body mass 59.7 ± 6.3 kg. The results of research by Piechaczek et al. (1996) constituted the reference point for the results of measurements of Polish tennis representatives. The authors studied 153 female students of Warsaw Technical University aged 20.2 ± 1.09 years. They were randomly chosen students of the first and the second year of various departments at this university. The mean body height of the students was 166.2 ± 6.2 cm and the mean body mass 57.4 ± 7.72 kg. Anthropometric measurements were taken using standard instruments (Drozdowski, 1998). The analysis involved 11 somatic features which determined three so-called factors of body composition: length (m1), stoutness (m2) and obesity (m3). The assessment of proportions of the body composition was made by means of Perkal’s natural indices (1953) with Milicerowa’s modifications (1956). We determined the following: composition factors (m), index of total body size (M), internal proportions of the body composition, evenness of composition, the code of internal proportions; also the assessment of internal proportions of the body composition within each of the factors.Taking into consideration the mean values of the studied somatic features in the control group and the comparative group we found differences in their body composition. The representatives of the Polish national tennis team showed substantially longer upper and lower limbs, and the body height was greater. They also had much greater forearm perimeter and shorter pelvic width. As to the total body size, the tennis players slightly exceeded the students (M = 0.24). The total body size (M) resulted from high values of length features (m1 = 1.01), low ones of stoutness (m2 = –0.39) and medium ones of obesity (m3 = 0.1). The value of the intragroup variability index (harmony of composition) amounted to 1.4 and the code of internal proportions of tennis players’ body composition — to 6—2—4. The proportions of internal features of the stoutness index (natural indices of features within a factor) showed the advantage of the forearm perimeter (1.62) and elbow width (0.36). The knee width (–1.30) and pelvic width (–0.60) were disproportionate to the total value of this factor. The input of features characterizing the length factor was relatively proportional.Keywords: tennis, training, body composition, internal proportions.

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