The Relationship between Skinfold and Ultrasound Measures of Subcutaneous Fat in Untrained Healthy Males

Ultrasound measurement of adipose tissue offers an alternative measure of body composition with less technical skill requirement than skinfolds. However, the relationship between skinfold and ultrasound measurements of adipose tissue is uncertain. The aim of this study was to compare these measures in a healthy untrained male population. One hundred male participants (aged 18–40 years) of varying body compositions had skinfold measures taken at the biceps, triceps and front thigh sites. Ultrasound measures were also taken at the same sites using B-wave ultrasound with a linear probe in the transverse plane. Strong, significant (p < 0.01), positive correlations were observed between skinfold and ultrasound measures at the biceps (r = 0.828), triceps (r = 0.813), and front thigh (r = 0.888) sites. However, there was significant (p < 0.01) variance between the techniques at all measurement sites. Whilst skinfold and ultrasound measures of adipose tissue have good linear agreement, skinfolds are consistently higher at all sites indicating a difference in the nature of the tissue measured via each technique. The exact nature of the relationship should be established on a population-specific basis.

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Evaluator effect on the ultrasound measurement of subcutaneous fat deposition and loin eye area from weaning to slaughter lambs

Veterinary World ◽

10.14202/vetworld.2021.259-264 ◽

2021 ◽

Vol 14 (1) ◽

pp. 259-264

Author(s):

Fernando Miranda de Vargas Junior ◽

Tatiane Fernandes ◽

Alexsander Toniazzo de Matos ◽

Alexandre Rodrigo Mendes Fernandes ◽

Luis Gustavo Castro Alves ◽

...

Keyword(s):

Image Interpretation ◽

Subcutaneous Fat ◽

Ultrasound Image ◽

Ultrasound Measurement ◽

Invasive Technique ◽

Skin Thickness ◽

Linear Probe ◽

Subcutaneous Fat Thickness ◽

Fat Thickness ◽

Identity Test

Background and Aim: Ultrasound is a non-invasive technique that enables animal evaluation and body condition classification of animals. Although it is not difficult to obtain an image, the analysis of this image can influence results quality. This study aimed to evaluate the repeatability and reproducibility of the technician trained in image interpretation obtained using different ultrasound frequencies. Materials and Methods: Ninety-six lambs were used, ranging in weight from 15 to 40 kg. The images were captured using a linear probe of 13 cm, with a 3.5 megahertz (MHz) frequency and an acoustic couplant aid "standoff" or using a multifrequency transducer (6 and 8 MHz), on B mode, with a linear probe and 8.0 MHz frequency. All measurements were performed by the same technician, on the left side, between the 12th and 13th rib. Five different evaluators, at two different times, with aid of Image J software measured the loin eye area (LEA; only for images obtained with 3.5 MHz), Longissimus thoracis et lumborum depth (DLM), subcutaneous fat thickness (SFT), subcutaneous fat thickness plus skin (SFST), and skin thickness (ST). Results: For LEA, DLM, SFT, SFST, and ST, variation was observed (p<0.01) between evaluators; however, there was no difference (p>0.05) between the 2 times of evaluation. Images measurements obtained with a frequency of 8.0 MHz had better repeatability indices and reproducibility indices. Accordingly, the identity test demonstrated that measurements performed on images obtained using 3.5 or 8.0 MHz were not equivalent. Conclusion: Ultrasound image measurements obtained using an 8.0 MHz frequency were more accurate and precise. It is important to use only one evaluator or providing the simultaneous training for all evaluators.

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The Relationship of Fasting Free Fatty Acids, Adipose Tissue, Insulin Resistance, and Fasting Glucose Concentrations with Subsequent ß-Cell Function in Nondiabetic Subjects

Diabetes ◽

10.2337/db18-1812-p ◽

2018 ◽

Vol 67 (Supplement 1) ◽

pp. 1812-P

Author(s):

MARIA D. HURTADO ◽

J.D. ADAMS ◽

MARCELLO C. LAURENTI ◽

CHIARA DALLA MAN ◽

CLAUDIO COBELLI ◽

...

Keyword(s):

Insulin Resistance ◽

Fatty Acids ◽

Adipose Tissue ◽

Free Fatty Acids ◽

Cell Function ◽

Fasting Glucose ◽

Relationship Of ◽

The Relationship

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A distribution-centered approach for analyzing human adipocyte size estimates and their association with obesity-related traits and mitochondrial function

International Journal of Obesity ◽

10.1038/s41366-021-00883-6 ◽

2021 ◽

Author(s):

Julius Honecker ◽

Dominik Weidlich ◽

Simone Heisz ◽

Cecilia M. Lindgren ◽

Dimitrios C. Karampinos ◽

...

Keyword(s):

Adipose Tissue ◽

Mitochondrial Respiration ◽

Mitochondrial Respiratory Chain ◽

Cell Diameter ◽

Adipocyte Size ◽

Fat Cell ◽

Positive Correlations ◽

Size Estimates ◽

Diameter Distributions ◽

Mitochondrial Respiratory

Abstract Objective Cell diameter, area, and volume are established quantitative measures of adipocyte size. However, these different adipocyte sizing parameters have not yet been directly compared regarding their distributions. Therefore, the study aimed to investigate how these adipocyte size measures differ in their distribution and assessed their correlation with anthropometry and laboratory chemistry. In addition, we were interested to investigate the relationship between fat cell size and adipocyte mitochondrial respiratory chain capacity. Methods Subcutaneous and visceral histology-based adipocyte size estimates from 188 individuals were analyzed by applying a panel of parameters to describe the underlying cell population. Histology-based adipocyte diameter distributions were compared with adipocyte diameter distributions from collagenase digestion. Associations of mean adipocyte size with body mass index (BMI), glucose, HbA1C, blood lipids as well as mature adipocyte mitochondrial respiration were investigated. Results All adipocyte area estimates derived from adipose tissue histology were not normally distributed, but rather characterized by positive skewness. The shape of the size distribution depends on the adipocyte sizing parameter and on the method used to determine adipocyte size. Despite different distribution shapes histology-derived adipocyte area, diameter, volume, and surface area consistently showed positive correlations with BMI. Furthermore, associations between adipocyte sizing parameters and glucose, HbA1C, or HDL specifically in the visceral adipose depot were revealed. Increasing subcutaneous adipocyte diameter was negatively correlated with adipocyte mitochondrial respiration. Conclusions Despite different underlying size distributions, the correlation with obesity-related traits was consistent across adipocyte sizing parameters. Decreased mitochondrial respiratory capacity with increasing subcutaneous adipocyte diameter could display a novel link between adipocyte hypertrophy and adipose tissue function.

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Muscle metabolome and adipose tissue mRNA expression of lipid metabolism-related genes in over-conditioned dairy cows differing in serum-metabotype

Scientific Reports ◽

10.1038/s41598-021-90577-w ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Hassan Sadri ◽

Morteza Hosseini Ghaffari ◽

Katharina Schuh ◽

Christian Koch ◽

Helga Sauerwein

Keyword(s):

Adipose Tissue ◽

Dairy Cows ◽

Body Condition Score ◽

Subcutaneous Fat ◽

Oxidative Capacity ◽

Mrna Abundance ◽

Targeted Metabolomics ◽

Healthy Humans ◽

Condition Score ◽

Metabolically Healthy

AbstractOver-conditioned dairy cows, classified by body condition score (BCS) and backfat thickness (BFT) are less able to metabolically adapt to the rapidly increasing milk yield after parturition. Based on serum metabolome and cluster analyses, high BCS cows (HBCS) could be classified into metabotypes that are more similar to normal (NBCS) cows, i.e., HBCS predicted normal (HBCS-PN) than the HBCS predicted high (HBCS-PH) cows—similar to the concept of obese but metabolically healthy humans. Our objective was to compare muscle metabolome and mRNA abundance of genes related to lipogenesis and lipolysis in adipose tissue between HBCS-PH (n = 13), HBCS-PN (n = 6), and NBCS-PN (n = 15). Tail-head subcutaneous fat was biopsied on d −49, 3, 21, and 84 relative to parturition. Potential differences in the oxidative capacity of skeletal muscle were assessed by targeted metabolomics in M. semitendinosus from d 21. Besides characteristic changes with time, differences in the mRNA abundance were limited to lipogenesis-related genes on d −49 (HBCS-PH > HBCS-PN). The HBCS-PH had more than two-fold higher muscle concentrations of short (C2, C4-OH, C6-OH) and long-chain acylcarnitines (C16, C18, and C18:1) than HBCS-PN, indicating a greater oxidative capacity for fatty acids (and utilization of ketones) in muscle of HBCS-PN than HBCS-PH cows.

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Beige adipocytes mediate the neuroprotective and anti-inflammatory effects of subcutaneous fat in obese mice

Nature Communications ◽

10.1038/s41467-021-24540-8 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

De-Huang Guo ◽

Masaki Yamamoto ◽

Caterina M. Hernandez ◽

Hesam Khodadadi ◽

Babak Baban ◽

...

Keyword(s):

Subcutaneous Fat ◽

Visceral Obesity ◽

Interleukin 4 ◽

Hippocampal Synaptic Plasticity ◽

Beige Adipocytes ◽

Beige Fat ◽

Dietary Obesity ◽

Anti Inflammatory ◽

Subcutaneous Adiposity ◽

The Relationship

AbstractVisceral obesity increases risk of cognitive decline in humans, but subcutaneous adiposity does not. Here, we report that beige adipocytes are indispensable for the neuroprotective and anti-inflammatory effects of subcutaneous fat. Mice lacking functional beige fat exhibit accelerated cognitive dysfunction and microglial activation with dietary obesity. Subcutaneous fat transplantation also protects against chronic obesity in wildtype mice via beige fat-dependent mechanisms. Beige adipocytes restore hippocampal synaptic plasticity following transplantation, and these effects require the anti-inflammatory cytokine interleukin-4 (IL4). After observing beige fat-mediated induction of IL4 in meningeal T-cells, we investigated the contributions of peripheral lymphocytes in donor fat. There was no sign of donor-derived lymphocyte trafficking between fat and brain, but recipient-derived lymphocytes were required for the effects of transplantation on cognition and microglial morphology. These findings indicate that beige adipocytes oppose obesity-induced cognitive impairment, with a potential role for IL4 in the relationship between beige fat and brain function.

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Weight Status and Visceral Adiposity Mediate the Relationship between Exclusive Breastfeeding Duration and Skin Carotenoids in Later Childhood

Current Developments in Nutrition ◽

10.1093/cdn/nzab010 ◽

2021 ◽

Author(s):

Ruyu Liu ◽

Caitlyn G Edwards ◽

Corinne N Cannavale ◽

Isabel R Flemming ◽

Morgan R Chojnacki ◽

...

Keyword(s):

Adipose Tissue ◽

Exclusive Breastfeeding ◽

Weight Status ◽

Mediating Effect ◽

Physical Growth ◽

Breastfeeding Duration ◽

Whole Body ◽

Controlled Clinical Trial ◽

The Impact ◽

The Relationship

Abstract Background Breastfeeding is associated with healthier weight and nutrient status in early life. However, the impact of breastfeeding on carotenoid status beyond infancy, and the influence of adiposity, is unknown. Objective The aim of the study was to retrospectively investigate the relationship between breastfeeding and carotenoid status, and the mediating effect of weight status and adiposity on this relationship among school-aged children. Methods This was a secondary analysis of baseline data collected from a randomized-controlled clinical trial. (ClinicalTrials.gov Identifier: NCT03521349). 7–12-year-old (n = 81) children were recruited from East-Central Illinois. Dual-energy x-ray absorptiometry (DXA) was used to assess visceral adipose tissue (VAT) and whole-body adiposity (%Fat). Weight was obtained to calculated body mass index percentile (BMI %ile). Skin carotenoids were assessed via reflection spectroscopy. Macular carotenoids were assessed as macular pigment optical density (MPOD). Dietary, birth, and breastfeeding information was self-reported by parents. Results Skin carotenoids were inversely related to %Fat (P < 0.01), VAT (P < 0.01) and BMI %ile (P < 0.01). VAT and BMI %ile significantly mediated this relationship between exclusive breastfeeding duration and skin carotenoids, following adjustment for dietary carotenoids, energy intake, and mother education. Conclusions Weight status and adipose tissue distribution mediate the positive correlation between exclusive breastfeeding duration and skin carotenoids among children aged 7–12 years. The results indicate the need to support breastfeeding and healthy physical growth in childhood for optimal carotenoid status.

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Mid upper arm circumference as an alternative measure to assess the nutritional status of adolescents: a study in India based on NFHS-4 data

Journal of Biosocial Science ◽

10.1017/s0021932021000298 ◽

2021 ◽

pp. 1-12

Author(s):

Aparna Roy ◽

T. V. Sekher

Keyword(s):

Nutritional Status ◽

Sensitivity And Specificity ◽

Measurement Data ◽

Anthropometric Measurement ◽

Alternative Measure ◽

Upper Arm ◽

Male Adolescents ◽

Arm Circumference ◽

Mid Upper Arm Circumference ◽

The Relationship

Abstract Use of body mass index (BMI) to assess the nutritional status of adolescents requires many resources, especially for country-level assessment. This study aimed to determine the relationship between BMI and mid upper arm circumference (MUAC) among adolescent males and females in India and to examine whether MUAC effectively represents the nutritional status of adolescents. The study utilized anthropometric measurement data collected by India’s National Family Health Survey-4 (2015–16). The weighted sample for analysis included 91,315 female and 14,893 male adolescents. The BMI and MUAC measurements showed a positive correlation in both female and male adolescents. Using BMI-for-age Z-score classifications, 12.7% of the adolescents were undernourished. Using MUAC (in cm) as per NACS (Nutrition Assessment, Counselling, and Support) guidelines and Mramba et al. (2017) classified 22.9% and 3.7% of the adolescents as undernourished respectively. Finally, using the MUAC-for-age Z-score classification, 98.4% of adolescents were determined to be normal and 1.7% undernourished. Sensitivity and specificity tests of the MUAC cut-offs, in comparison with BMI cut-offs, showed that all three MUAC cut-off classifications had high specificity (NACS cut-off: 81.3%; Mramba et al. cut-off (cm): 97.7%; Mramba et al. cut-off (Z-score): 99.1%). The NACS cut-off had moderately high sensitivity (52.2%) but the Mramba et al. cut-offs had low sensitivity (13.3% for the centimetre cut-off and 6.6% for the Z-score cut-off). Sensitivity and specificity tests proved the relationship between BMI and MUAC, and that MUAC represents adolescent nutritional status with considerable efficiency. With further research, it may be established that MUAC is a better and promising measure of adolescent nutrition, having the advantage of needing fewer resources for data collection. The MUAC has the potential to offer a simple and low-resource alternative to BMI to assess nutritional status among adolescents in poor countries.

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The Relationship between Dynamic Balance and Jumping Tests among Adolescent Amateur Rugby Players. A Preliminary Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18010312 ◽

2021 ◽

Vol 18 (1) ◽

pp. 312

Author(s):

Bartosz Wilczyński ◽

Jakub Hinca ◽

Daniel Ślęzak ◽

Katarzyna Zorena

Keyword(s):

Injury Risk ◽

Dynamic Balance ◽

Study Data ◽

Balance Test ◽

Risk Of Injury ◽

Counter Movement Jump ◽

Increased Risk ◽

Positive Correlations ◽

The Relationship ◽

Rugby Players

Rugby is a demanding contact sport. In light of research, poor balance, reduced jumping ability, muscle strength, and incorrect landing patterns might contribute to the increased risk of injury in athletes. Investigating the relationship between tests assessing these abilities might not only allow for the skillful programming of preventive training but also helps in assessing the risk of injury to athletes. Thus, the main purpose of this study was to investigate the relationship between dynamic balance, vertical and horizontal jumps, and jump-landings movement patterns. Thirty-one healthy amateur adolescent rugby players (age: 14.3 ± 1.6 years, height 171.4 ± 9.7 cm, body mass 80 ± 26 kg) participated in the study. Data were collected by the Y-balance Test (YBT), Counter Movement Jump (CMJ), Single Leg Hop for Distance (SLHD), and Landing Error Score System (LESS). Significant positive correlations were found between SLHD both legs (SLHDb) and YBT Composite both legs (COMb) (r = 0.51, p = 0.0037) and between SLHDb and CMJ (r = 0.72, p < 0.0001). A relationship was also observed between the CMJ and YBT COMb test (r = 0.51, p = 0.006). Moderate positive correlations were found between the dominant legs in SLHD and the posterolateral (r = 0.40, p = 0.027), posteromedial (r = 0.43, p = 0.014), and composite (r = 0.48, p = 0.006) directions of the YBT. These results indicate that variables that are dependent on each other can support in the assessment of injury-risk and in enhancing sports performance of young athletes.

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Objective and Subjective Outcomes in Patients with Hearing Aids: A Cross-Sectional, Comparative, Associational Study

Audiology and Neurotology ◽

10.1159/000516623 ◽

2021 ◽

pp. 1-9

Author(s):

Xunyi Wang ◽

Yun Zheng ◽

Gang Li ◽

Jingzhe Lu ◽

Yan Yin

Keyword(s):

Hearing Aids ◽

Patient Reported Outcomes ◽

Cross Sectional ◽

Patient Reported ◽

Objective Tests ◽

The Difference ◽

Potential Factors ◽

Positive Correlations ◽

The Relationship ◽

Subjective Outcomes

Introduction: Outcome assessment for hearing aids (HAs) is an essential part of HA fitting and validation. There is no consensus about the best or standard approach for evaluating HA outcomes. And, the relationship between objective and subjective measures is ambiguous. This study aimed to determine the outcomes after HA fitting, explore correlations between subjective benefit and acoustic gain improvement as well as objective audiologic tests, and investigate several variables that may improve patients’ perceived benefits. Methods: Eighty adults with bilateral symmetrical hearing loss using HAs for at least 1 month were included in this study. All subjects completed the pure tone average (PTA) threshold and word recognition score (WRS) tests in unaided and aided conditions. We also administered the Chinese version of International Outcome Inventory for Hearing Aids (IOI-HA), to measure participants’ subjective benefits. Objective HA benefit (acoustic gain improvement) was defined as the difference in thresholds or scores between aided and unaided conditions indicated with ΔPTA and ΔWRS. Thus, patients’ baseline hearing levels were taken into account. Correlations were assessed among objective audiologic tests (PTA and WRS), acoustic gain improvement (ΔPTA and ΔWRS), multiple potential factors, and IOI-HA overall scores. Results: PTA decreased significantly, but WRS did not increase when aided listening was compared to unaided listening. Negative correlations between PTAs and IOI-HA scores were significant but weak (r = −0.370 and r = −0.393, all p < 0.05). Significant weak positive correlations were found between WRSs and IOI-HA (r = 0.386 and r = 0.309, all p < 0.05). However, there was no correlation among ΔPTA, ΔWRS, and IOI-HA (r = 0.056 and r = −0.086, all p > 0.05). Moreover, 2 nonaudiological factors (age and daily use time) were significantly correlated with IOI-HA (r = −0.269 and r = 0.242, all p < 0.05). Conclusions: Correlations among objective audiologic tests, acoustic gain, and subjective patient-reported outcomes were weak or absent. Subjective questionnaires and objective tests do not reflect the same hearing capability. Therefore, it is advisable to evaluate both objective and subjective outcomes when analyzing HA benefits on a regular basis and pay equal attention to nonaudiological and audiological factors.

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Investigating the relationship between insulin resistance and adipose tissue in a randomized Tehrani population

Hormone Molecular Biology and Clinical Investigation ◽

10.1515/hmbci-2020-0084 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Jalaledin Mirzay Razzaz ◽

Hossein Moameri ◽

Zahra Akbarzadeh ◽

Mohammad Ariya ◽

Seyed ali Hosseini ◽

...

Keyword(s):

Insulin Resistance ◽

Adipose Tissue ◽

Body Fat ◽

Odds Ratio ◽

Cross Sectional Study ◽

Model Assessment ◽

Fasting Insulin ◽

Cross Sectional ◽

Body Fat Percent ◽

The Relationship

Abstract Objectives Insulin resistance is the most common metabolic change associated with obesity. The present study aimed to investigate the relationship between insulin resistance and body composition especially adipose tissue in a randomized Tehrani population. Methods This study used data of 2,160 individuals registered in a cross-sectional study on were randomly selected from among subjects who were referred to nutrition counseling clinic in Tehran, from April 2016 to September 2017. Insulin resistance was calculated by homeostasis model assessment formula. The odds ratio (95% CI) was calculated using logistic regression models. Results The mean age of the men was 39 (±10) and women were 41 (±11) (the age ranged from 20 to 50 years). The risk of increased HOMA-IR was 1.03 (95% CI: 1.01–1.04) for an increase in one percent of Body fat, and 1.03 (95% CI: 1.00–1.05) for an increase in one percent of Trunk fat. Moreover, the odds ratio of FBS for an increase in one unit of Body fat percent and Trunk fat percent increased by 1.05 (adjusted odds ratio [95% CI: 1.03, 1.06]) and 1.05 (95% CI: 1.02, 1.08). Also, the risk of increased Fasting Insulin was 1.05 (95% CI: 1.03–1.07) for an increase in one unit of Body fat percent, and 1.05 (95% CI: 1.02–1.08) for an increase in one unit of Trunk fat percent. Conclusions The findings of the present study showed that there was a significant relationship between HOMA-IR, Fasting blood sugar, Fasting Insulin, and 2 h Insulin with percent of Body fat, percent of Trunk fat.

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