Interaction of Low pH and starvation on Body Weight and Composition of Young-of-Year Smallmouth Bass (Micropterus dolomieui)

1986 ◽  
Vol 43 (4) ◽  
pp. 869-876 ◽  
Author(s):  
G. L. Cunningham ◽  
B. J. Shuter
Keyword(s):  
Body Composition ◽  
Ph Effect ◽  
Dry Weight ◽  
Field Studies ◽  
Low Ph ◽  
Smallmouth Bass ◽  
The Body ◽  
Wild Fish ◽  
Moderate Increase ◽  
Micropterus Dolomieui

Effects of overwinter starvation on the body composition of young-of-year smallmouth bass (Micropterus dolomieui) were examined in laboratory and field studies. Interactive effects of starvation and low pH on body composition were examined in the laboratory. Changes in body composition associated with starvation were similar in laboratory and field studies: on a dry weight basis, the amount of water, ash, Ca, K, and Na increased progressively in both laboratory and wild fish. The amount of Cl per unit dry weight showed a moderate increase in the laboratory fish and a large decline in the wild fish. The effects on starving fish of 6-wk chronic exposures to nonlethal pH levels of 4.0–7.0 were examined in the laboratory. No pH effect was noted for levels greater than 5.0. Losses of water, ash, Ca, K, Cl, and Na increased as the pH declined. There was no consistent effect of pH on rate of loss of ash-free organic matter. The results suggest that starvation may reduce the tolerance of young smallmouth bass to low pH through progressive weakening of the osmoregulatory system.

scholarly journals SP419USEFULNESS OF THE BODY COMPOSITION MONITOR IN SETTING DRY WEIGHT AT AN INITIATION OF HAEMODIALYSIS

2016 ◽  
Vol 31 (suppl_1) ◽  
pp. i231-i231
Author(s):  
Shin Fukunaga ◽  
Kazuhiro Yamada ◽  
Akiko Baba ◽  
Yuji Sato ◽  
Shouichi Fujimoto
Keyword(s):  
Body Composition ◽  
Dry Weight ◽  
The Body ◽  
Body Composition Monitor

scholarly journals Estimation of Body Composition and Normal Fluid Status Using a Calf Bioimpedance Technique

2015 ◽  
Vol 39 (1-3) ◽  
pp. 25-31 ◽  
Author(s):  
Fansan Zhu ◽  
Nathan W. Levin
Keyword(s):  
Body Composition ◽  
Gold Standard ◽  
Dry Weight ◽  
Practical Method ◽  
The Body ◽  
Normal Fluid ◽  
Fluid Status ◽  
Body Composition Study ◽  
Highly Correlated ◽  
A Prospective Study

The aims of this study in hemodialysis (HD) patients were: 1. To evaluate the relationship of calf bioimpedance with total body composition and fluid status as measured by gold standard methods. 2. To investigate the ability of calf normalized resistivity (CNR) to predict the normal fluid status (dry weight: DW) in a prospective study. In the body composition study (n = 41), fluid status (ECVBr/FFMMRI), muscle mass (MMMRI), and total adipose tissue (TATMRI) were measured by dilution (D2O and Br) and MRI methods three hours prior to HD treatment. Calf extracellular and intracellular resistance, resistivity, and CNR were measured with a multi-frequency bioimpedance device (Hydra 4200). In the fluid status study (n = 32 with 429 measurements), a nonlinear model based on the differences in CNR between patients and healthy subjects was established to predict DWcBIS previously determined by a separate continuous calf bioimpedance spectroscopy (cBIS) method. CNR significantly correlated with a gold standard hydration marker (ECVBr/FFMMRI). Calf body composition models were highly correlated with MMMRI (R2 = 0.85) and TATMRI (R2 = 0.85). DWcBIS prediction was validated with a CNR model in the degree of differences of 0.94 ± 0.18, 0.39 ± 0.7 and -0.02 ± 0.8 kg from DWcBIS when post HD fluid overload was 1.8 ± 1.2, 1.15 ± 0.8 and 0.54 ± 0.5 kg, respectively. These differences are not considered to be clinically significant. Conclusion: This practical method of calf bioimpedance is useful to predict body composition and normal fluid status in dialysis patients.

scholarly journals MO913BODY COMPOSITION EVALUATED BY BIOIMPEDANCE IN FRAIL PATIENTS ON HEMODIALYSIS

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Álvaro Álvarez López ◽  
Barbara Cancho Castellano ◽  
Cristina López Arnaldo ◽  
Rosa Maria Diaz Campillejo ◽  
Elena Garcia de Vinuesa Palo ◽  
...  
Keyword(s):  
Body Composition ◽  
Physiological Role ◽  
Venous Catheter ◽  
Dry Weight ◽  
The Elderly ◽  
The Body ◽  
Positive Trend ◽  
Continuous Variables ◽  
Clinical Scale ◽  
Cross Sectional

Abstract Background and Aims Frailty is known as a biological syndrome of decreased reserves and resistance to stress, with a decline of multiple physiological systems, causing vulnerability. Its prevalence ranges from 10-80 %. The etiopathogenesis is multifactorial, based on the loss of muscle mass associated with aging or sarcopenia. Chronic Kidney Disease (CKD) is a model of accelerated aging, with impaired physical function, frailty and cognitive decline. The main theorical frameworks on frailty are the one advocated by Linda Fried, in which she develops a phenotype as a risk situation for developing disability and one advocated by Kennet Rockwood which establishes that frailty consists of addition of various health conditions including comorbidity and disability. Our objective was to evaluate frailty in stage 5 CKD in haemodialysis, measured by clinical scale and to relate it to the body composition measured by bioimpedance. Method Cross-sectional study in 40 subjects with CKD in hospital haemodialysis, 70.5±13.03 years, 62.5% male. 40% Diabetic Nephropathy, 10% Glomerulopathies, 7.5% Nephroangiosclerosis, 2.5% Chronic Tubule-Interstitial Nephropathies, 32.5% Unknow, 2.5% Others. 35% arteriovenous fistula, 10% arteriovenous graft, 55% central venous catheter. Hemodialysis type: 40% High Flux, 45% Online postdilutional Haemodiafiltration, 10% Acetate Free Biofiltration. Fragility was measured by the Rockwood clinical scale: not fragile (1-4), moderately fragile (5-6) and severely fragile (7-9). Body composition was estimated by monofrequency bioimpedance measurement. Chi-Cuadrado was used to study differences between dichotomous variables and ANOVA for continuous variables. Spearman correlation´s was used to examinate the intensity of association between two quantitative variables. Statistical analysis was performed with SPSS 13.0. Results 42.5% of the subjects presented a degree of fragility ≥5, severely fragile 27.5%. The results are shown in the Tables 1 and 2. Conclusion The degree of frailty is greater in the elderly. Measurement of body composition by bioimpedance can be useful to indirectly asses frailty. The phase angle could be an indicator of fragility, since in more fragile subjects its value decreases, its physiological role remains to be elucidated. There is a positive trend to an increase in extracellular water in more fragile subjects, keeping the subjects in their dry weight, so it will be necessary to evaluate what is due.

scholarly journals Assessing the body composition of 6-17-year-old black and white girls in field studies

2001 ◽  
Vol 13 (2) ◽  
pp. 249-254 ◽  
Author(s):  
John A. Morrison ◽  
Shumei S. Guo ◽  
Bonny Specker ◽  
WM. Cameron Chumlea ◽  
Susan Z. Yanovski ◽  
...  
Keyword(s):  
Body Composition ◽  
Field Studies ◽  
The Body ◽  
Black And White ◽  
White Girls

scholarly journals Biochemical composition of tropical eel Anguilla bicolor McClelland,1844 in Freshwater and Estuary

2021 ◽  
Vol 322 ◽  
pp. 01008
Author(s):  
Farida Nur Rachmawati ◽  
Untung Susilo
Keyword(s):  
Body Composition ◽  
Body Length ◽  
Lipid Content ◽  
Feeding Activity ◽  
Lipid Body ◽  
Dry Weight ◽  
The Body ◽  
Survey Method ◽  
Body Lipid ◽  
Freshwater Eels

During migration, Anguilla bicolor will stop its feeding activity and use energy from its body lipid stores. Therefore, information on changes in the body lipid content of eels is essential to know the preparation of spawning migration. Thus, it is interesting to study the body composition of A. bicolor in freshwater and estuaries. This research conducted a survey method. The eel was obtained from the Serayu River (freshwaters) and Segara Anakan (Estuary). The observed variables were water, dry weight, lipid, protein, crude fiber, ash, and BETN of eel. Oneway ANOVA analyzed data. The results show that freshwater eels' average body length and weight were 457.875 cm ± 153.8552 and 224.4375 g ± 165.3735. The body length and weight of the estuary eels were smaller than freshwater eels, which are 372.5714 cm ± 152.6467 and 109.6429 g ± 134.6054, respectively. The body composition of eel, except for lipid content, was similar for both habitats (p>0.05). However, the body lipid content of freshwater eels and the estuarine eel differed (p<0.05), namely 40.15% ± 9.63 and 27.33% ± 9.93, respectively. In conclusion, the lipid body content of freshwater eels was higher than the estuary eel, while another is relatively the same.

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