Fat Thickness Levels Research Articles

The Effect of Calf Subcutaneous Fat Thickness on Patient Satisfaction after Calf Contouring with Botulinum Toxin A.

As a minimally invasive therapy, botulinum toxin A (BTXA) treatment effectively reduces the hypertrophy of the gastrocnemius muscle (GM). Patient satisfaction is, however, reported to be low after treatment, with a possible correlation between high satisfaction and thinner subcutaneous fat. The goal of this study was to classify the subcutaneous fat of calves to understand the relation between fat thickness and patient satisfaction after BTXA treatment. The maximal leg circumference was measured, and B-mode ultrasound was used to measure the thickness of the medial head of the GM and of the subcutaneous fat. Patients were followed up at 1 and 6 months after BTXA treatment. A total of 50 cases were classified into the following levels of fat thickness: slim (<0.55 cm), moderate (0.55 to 0.85 cm), and bulge (>0.85 cm). All patients were treated with 300 units of BTXA. Patients in the slim and bulge groups reported higher satisfaction rate than patients in the moderate group, with patients in the slim and bulge groups reporting complete satisfaction (100%) with calf contour at the 6-month follow-up. The satisfaction rate with the improvement in total leg circumference was low in all 3 groups. No severe complications were encountered in this study. This study identified a U-shaped correlation between calf subcutaneous fat thickness and patient satisfaction rate after treatment. The authors' results provide a theoretical basis for BTXA treatment and suggest the importance of preprocedure conversations in GM hypertrophy treatment. Risk, II.

Determinants of Pancreatic Steatosis: A Retrospective Observational Study.

BACKGROUND Metabolic syndrome affects 35% of the adult population in developed countries associated with non-alcoholic steatohepatitis, insulin resistance, and cardiovascular events. Fatty infiltration of the pancreas, or pancreatic steatosis, is a risk factor for acute pancreatitis, pancreatic malignancies, and diabetes mellitus, yet its relationship with metabolic syndrome is not well defined. METHODS We performed a single-centered retrospective observational study of 322 healthy subjects (subjects volunteering to be kidney transplant donors, mean age=46.3±13.5, 163 men and 159 women) in the last 2 years (July 2018-February 2020) from our institution. Pancreatic steatosis and hepatosteatosis were confirmed by computed tomography. RESULTS Pancreatic steatosis was present in 26.3% (85/322) of the subjects, and this finding correlated with age, body mass index (BMI), male sex, a family history of diabetes, creatinine, cystatin C, uric acid, low-density lipoprotein (LDL) cholesterol, triglycerides, glycemia, hemoglobin, transverse body diameter, and subcutaneous fat thickness levels by univariable logistic regression. On multiple linear regression only age (95% CI 1.01, 1.06), BMI (95% CI 1.01, 1.19), male sex (95% CI 1.49-5.99), uric acid (95% CI 1.01, 1.76), and subcutaneous fat thickness levels (95% CI 1.21-2.36) remained independently associated with pancreatic steatosis. CONCLUSION Pancreatic steatosis is common and associated with obesity, elevated serum uric acid, subcutaneous fat thickness, and male sex. Future studies are needed to evaluate if there are specific clinical consequences to the presence of pancreatic steatosis.

Examination of the confounding effect of subcutaneous fat on muscle echo intensity utilizing exogenous fat.

We aimed to provide an unbiased estimate of the confounding effect of subcutaneous fat thickness on ultrasound echo intensity (EI) measures of muscle quality. The effect of fat thickness on EI was verified for an approximate range of 0 to 3 cm of fat using exogeneous layers of pork fat over the human tibialis anterior muscle. Sonograms were obtained (i) with focus constant across fat thickness conditions, and (ii) with focus position adjusted to the muscle region of interest (ROI) position for each fat thickness level. In agreement with our hypothesis, increasing fat between the probe and the ROI resulted in a decrease in EI. This overestimating effect of fat on muscle quality differs between sonograms with constant focus and sonograms with focus position adjusted to the vertical displacement in ROI position that occurs for different levels of fat thickness. Correcting equations to account for the overestimating effect of fat on muscle quality are provided for both focus conditions. This is the first study to systematically analyze the confounding effect of fat thickness as an independent factor and the provided equations can be used for improved accuracy in estimates of muscle quality in obese/overweight subjects/patients. Novelty: The independent confounding effect of subcutaneous fat thickness on ultrasound (US) estimates of muscle quality was quantified. US estimates of muscle quality depend on whether focus is adjusted to the muscle region of interest or not. Equations for correcting muscle quality estimates are provided.

Influence of subcutaneous fat thickness on the carcass characteristics and meat quality of beef cattle

ABSTRACT: The objective of this research was to examine the effect of subcutaneous fat thickness (SFT) on carcass characteristics and meat quality in 24-month-old British and crossbred British steers finished in feedlot systems. It was assessed using meta-analysis performed on data that was extracted from 46 published studies and comprising a total of 2,695 experimental units. We found that SFT was influenced by and increased linearly with hot carcass weights (HCWs) and cold carcass weights (CCWs) and their yields; moreover, the bone fraction decreased whereas the muscle and fat fractions increased with higher levels of SFT. No significant differences were detected in meat quality variables. Thus, SFT appeared to have a direct influence on HCW, CCW, and the weight and yield of bone, muscle, and fat of castrated steers. A uniform fat thickness level of 6.0 mm SFT was determined to be the standard of quality of carcasses and meat products for consumers.

Thickness of carotid intima and epicardial fat in rosacea: a cross-sectional study.

BackgroundRosacea is a chronic facial skin disease associated with excessive inflammatory response to various triggers. Although some studies have supported the increased risk of cardiovascular diseases in rosacea, it has not been completely accepted.ObjectiveWe aimed to investigate epicardial fat thickness and carotid intima-media thickness as cardiovascular risk predictors in rosacea patients.MethodsWe conducted a cross-sectional study including 40 rosacea patients and 40 controls. Demographic data, epicardial fat thickness, carotid intima-media thickness, lipid parameters, biochemical parameters, presence of insulin resistance, and presence of metabolic syndrome of the participants were recorded.ResultsForty rosacea patients (31 female and 9 male) and 40 controls (30 female and 10 male) were enrolled in the study. Rosacea patients had significantly higher epicardial fat thickness and carotid intima-media thickness volumes than controls (P<0.001). In the multivariate logistic regression analysis, epicardial fat thickness was independently related to presence of rosacea (P<0.001, OR=13.31). In the multiple linear regression analysis, the epicardial fat thickness was independently associated with rosacea (β= 0.47, P<0.001), carotid intima-media thickness (β= 0.36, P<0.001), and systolic blood pressure (β=0.19, P=0.015) and the carotid intima-media thickness was independently associated with epicardial fat thickness (β= 0.6, P<0.001). The epicardial fat thickness levels were correlated with carotid intima-media thickness (r=0.63, P<0.001), LDL (r=0.23, P=0.037), systolic blood pressure (r=0.45, P<0.001), and diastolic blood pressure levels (r=0.37, P=0.001). The carotid intima-media thickness levels were correlated with epicardial fat thickness (r=0.63, P<0.001), systolic blood pressure (r=0.04, P<0.001), and diastolic blood pressure levels (r=0.27, P=0.016).Study limitationsThe small number of participants.ConclusionsExamination and follow-up of rosacea patients for cardiovascular diseases may be recommended practices.

Características quantitativas da carcaça de cordeiros Santa Inês, abatidos com diferentes espessuras de gordura subcutânea

ResumoObjetivou-se avaliar as características quantitativas das carcaças de cordeiros da raça Santa Inês em confinamento, abatidos com três espessuras de gordura subcutâneas (EGS) diferentes. Foram utilizados 24 cordeiros, machos não castrados da raça Santa Inês, com aproximadamente 100 dias de idade e peso vivo de 22,7±3,75kg, divididos aleatoriamente em três tratamentos: abates com espessura de gordura subcutânea de 2,0; 3,0 e 4,0mm. O delineamento experimental adotado foi o inteiramente casualizado, com três tratamentos e oito repetições por tratamento. Para as análises estatísticas utilizou-se o softwareSAEG Os cordeiros abatidos com 2,0mm apresentaram maiores rendimentos do fígado (2,12%), baço (0,32%), cabeça (6,69%) e patas (3,08%), havendo um declínio nos rendimentos com o aumento da EGS. Os rendimentos de carcaça na origem, no frigorifico, comercial e verdadeiro, sofreram interferência das EGS (p&lt;0,05), seguindo o mesmo comportamento dos pesos corporais e pesos das carcaças, em que os cordeiros abatidos com 4,00 mm de EGS apresentaram resultados superiores aos abatidos com 2,00 mm. Com o aumento da EGS foi observado no lombo que as proporções dos tecidos apresentaram o seguinte comportamento, aumento da gordura, diminuição do osso e não alteração do músculo. Recomenda-se o abate de cordeiros Santa Inês com 3,0 mm de EGS, pois foram os que proporcionaram melhores resultados para as características quantitativas da carcaça.

Effect of days in feedlot on growth performance, carcass and meat quality attributes of Tanzania shorthorn zebu steers.

A study was conducted on 50 steers (183 ± 4kg initial body weight, 3years of age) to assess effects of days in feedlot on performance, carcass characteristics and meat quality of Tanzania shorthorn zebu (TSZ) cattle with the aim of determining appropriate finishing period. Periods were 0day (P0), 25days (P25), 50days (P50), 75days (P75) and 100days (P100) with 10 animals per period. Steers were housed in individual pens, fed with a concentrate diet and hay on an ad libitum basis except the P0 group which was slaughtered at the beginning of trial. Long stay in feedlot, P100, increased concentrate dry matter intake by 2kgDM/day over short stay, P25. Final weight and total gain increased (P < 0.05) from P25 (22.6kg) to P100 steers (95.4kg). Periods had no influence (P > 0.05) on an average daily gain (ADG) and feed conversion ratio (FCR) but affected carcass characteristics. Empty body weight (EBW) and hot carcass weight (HCW) increased by 61 and 65%, respectively, from no feedlot, P0 to P100. Dressing percentage was high (P < 0.05) for P100 steers. Carcass measurements, internal fat, fat thickness and carcass total fat were the highest (P < 0.05) on P100 steers and the lowest on P0 steers. Rate of pH decline increased with days in feedlot, while cooking loss and shear force values decreased in advanced ageing time. Feedlot periods of 75 and 100days resulted into high intake, carcass measurements and tenderness, but 100days further increased carcass fatness and fat thickness levels, thus, with this particular feeding system and animal's condition, 75days is the recommended period to finish TSZ cattle in feedlots.

Meat quality of crossbred bulls fed with sorghum silage or sugar cane and slaughtered at two levels of fat thickness

This study was carried out to evaluate the performance and carcass characteristics of bulls from three genetic groups: Zebu (ZEB), ½ Limmousin vs. ½ Zebu (LIZ) and ½ Angus vs. ½ Zebu (ANZ). Bulls were finished in feedlot and fed two diets: sorghum silage + 1.0% concentrate of LW or sugar cane + 1.2% concentrate LW. The bulls were slaughtered at one of two fat thicknesses: 3.4 or 4.8 mm. The bulls of the LIZ and ANZ groups showed higher FBW and ADG. There were no differences in the feed intake and carcass characteristics among the groups. Bulls from LIZ group had a lower fat thickness and higher muscle deposition. There were no differences among groups on carcass characteristics. The bulls fed with sorghum silage had a higher FBW, ADG and carcass weight than those fed sugar cane, while the animals fed sugar cane had a higher DMI and lower feed efficiency. There was no difference in hot carcass dressing between the diets. The sorghum silage or sugar cane did not change carcass characteristics or the meat composition. The FBW and HCD were similar for the two levels of fat thickness. The ADG was higher in bulls with 3.4 mm of fat thickness.

Influence of body parameters on gastric bioelectric and biomagnetic fields in a realistic volume conductor

Electrogastrograms (EGG) and magnetogastrograms (MGG) provide two complementary methods for non-invasively recording electric or magnetic fields resulting from gastric electrical slow wave activity. It is known that EGG signals are relatively weak and difficult to reliably record while magnetic fields are, in theory, less attenuated by the low-conductivity fat layers present in the body. In this paper, we quantified the effects of fat thickness and conductivity values on resultant magnetic and electric fields using anatomically realistic torso models and trains of dipole sources reflecting recent experimental results. The results showed that when the fat conductivity was increased, there was minimal change in both potential and magnetic fields. However, when the fat conductivity was reduced, the magnetic fields were largely unchanged, but electric potentials had a significant change in patterns and amplitudes. When the thickness of the fat layer was increased by 30 mm, the amplitude of the magnetic fields decreased 10% more than potentials but magnetic field patterns were changed about four times less than potentials. The ability to localize the underlying sources from the magnetic fields using a surface current density measure was altered by less than 2 mm when the fat layer was increased by 30 mm. In summary, results confirm that MGG provides a favorable method over EGG when there are uncertain levels of fat thickness or conductivity.

THIOBARBITURIC ACID VALUES OF FRESH BEEF ROASTS COOKED WITH VARIOUS FOODSERVICE OVEN METHODS

ABSTRACTThiobarbituric acid (TBA) values of eight types of subprimal cuts were examined across a wide range of foodservice cooking methods and external fat thickness levels to evaluate factors affecting the accumulation of TBA‐reactive substances (a measure of oxidative rancidity) in foodservice beef. Fat trim level did not affect TBA values in cooked roasts. Postmortem storage time did not change ribeye or gooseneck TBA values (P &gt; 0.05), the only roast‐types to which that postmortem‐treatment was applied. Lower internal temperature endpoints resulted in higher TBA values (P &lt; 0.05). A slow cooking rate slightly increased (P &lt; 0.05) TBA values in shoulder clods, ribeye rolls, top rounds, and gooseneck rounds. Longer post‐cooking holding periods (either 3 or 8 h at 54.5C) generally resulted in higher TBA values (P &lt; 0.05), while roasts held for 1 h had lower values. However, all mean TBA values were below. 6.

Prediction of the commercial yield of beef from carcasses destined for the Japanese market by using measurements from the carcass and non-carcass parts

Yield of saleable beef was predicted in 4 genotypes of bullocks (Hereford, Brahman, Brahman x Hereford and Simmental x Hereford). Simple and multiple regression equations were used to determine how well 4 fat thickness measurements (12th rib and rump measurements SC3 SC5 and SC7) individually, with or without the inclusion of hot side weight, foreshanks weight and short cut tongue weight predicted the yields of saleable beef. Each of the 4 fat thickness measurements (alone) predicted percentage yield of saleable beef with low r.s.d.'s at the means. The regression coefficients for the 4 fat thickness measuring sites were negative and significant in the Hereford, Brahman and Brahman x Hereford groups. In the Simmental x Hereford cattle, the regression coefficients for the rump sites (SC3, SC5 and SC7) were positive but significant only in SC5 which had the lowest r.s.d. (1.56%) of all sites. Twelfth rib fat thickness, with a common regression coefficient for all 4 genotypes (P&lt;0.01) and an r.s.d. of 1.81%, was the next most useful fat thickness measurement. The addition of hot side weight improved the prediction of percentage saleable beef yield at the SC3 and SC5 sites, but not in the pure-bred Brahman bullocks. For populations that include British, European and Bos indicus cattle and their crosses, SC5 fat thickness (alone) was the best determinant of percentage yield of saleable beef. Neither quadratic analyses nor the addition of foreshanks weight or short-cut tongue weight to the fat thickness measurements improved the accuracy of linear regression in any of the 4 genotypes. The errors in prediction of percentage yield of saleable beef (0.28-0.67%) attributable to incorrect rump site location (of up to 4.0 cm) are unlikely to jeopardise the commercial value of yield of saleable beef predicted from measurements made on the rump. Whilst the Brahman and Brahman x Hereford cattle produced high-yielding carcasses for the Japanese chilled beef market and the Simmental x Hereford cattle, by judicious management could equal this yield, carcass yields of the Hereford cattle were about 4-5% lower at all levels of fat thickness. The ability of Hereford cattle to satisfy this market, economically, is seriously questioned.

The influence of breed and sex on saleable beef yield

Saleable beef yields from the carcasses of 38 Brahman crossbred bullocks, 42 Brahman crossbred females, 75 Hereford bullocks and 35 Hereford females were recorded in the boning room of an export abattoir. Regressions of saleable beef yield on 12th rib fat thickness and on rump P8 fat thickness were examined for breed and sex effects. Linear regression analysis showed that rump P8 fat thickness and 12th rib fat thickness predicted percentage yield of saleable beef with prediction errors at the mean (of the predictor variables) of 2.3 and 2.1 respectively. The inclusion of hot side weight with either fat thickness measurement in prediction equations did not significantly reduce the prediction errors. Either rump (P8) fat thickness or 12th rib fat thickness alone could be used to predict the weight of saleable beef, giving a prediction error of 12.4 kg, and the inclusion of hot side weight in these equations significantly reduced this error to 3.6 kg and 3.2 kg respectively. Quadratic analysis did not improve the accuracy of the prediction of percentage yield of saleable beef from either P8 alone or P8 plus hot side weight but it did reduce the prediction errors of saleable beef weight from P8 plus hot side weight to 3.5 kg. Regressions of percentage yield of saleable beef on 12th rib fat thickness did not vary significantly between Brahman crossbred bullocks and Brahman crossbred females, but they did between Hereford bullocks and Hereford females, and between each of the Hereford groups and the Brahmans. With increasing subcutaneous fat thickness Hereford females maintained a higher percentage of saleable beef than did the Hereford bullocks. Brahman crossbred cattle showed important yield advantages (1-3%) over Hereford cattle at all levels of fat thickness studied.

Differences in the Relation between Carcass Visual Scores and Composition in Heifers and Steers

It is well recognised that heifers, which are the source of approximately 0.35 of all clean cattle slaughtered for beef in Britain, yield carcasses that are different from those of steers in several commercially important aspects: they are lighter, are scored fatter than steers and have poorer conformation. Live and carcass wholesale prices for heifers are, on average, lower than for steers.In the USA, studies have shown that yield grade equations, deveoped to predict the ‘cutability’ of carcasses, overestimate this in heifers compared with steers, ie. heifers yield less of the defined primal cuts than steers at the same levels of fat thickness over the rib, rib eye area, kidney + pelvic + heart fat proportion, and carcass weight (predictor variables). However, it has recently been shown that this bias is apparently the result of differences between the sexes in the relation between the fat depth measurement and the total amount of fat trim. In Britain, estimates of yield are based on visual scores of fatness and conformation, but there Is little information on the relations between carcass morphology and composition in the two sexes, differences in which may have important commercial implications.