Association of neck circumference as an indicator of upper body obesity with cardio-metabolic risk factors among first degree relatives of diabetes patients

Neck Circumference and Blood Pressure Measurements among Walter Sisulu University Students

Hypertension is a public health problem in South Africa. Increases in subcutaneous fat, presented by the neck circumference (NC) value, contribute to and predict the development of hypertension. However, to date, there has been no study done to investigate the relationship between the NC and blood pressure (BP) among historically disadvantaged university students. Therefore, the aim of the study was to investigate the relationship between the NC and BP among Walter Sisulu University students. This cross-sectional study was conducted in Walter Sisulu University. All 127 students were aged 18 years and above and underwent NC and clinical BP measurements using standard procedures. In a Pearson's correlation analysis, the NC positively correlated with both the systolic blood pressure (SBP) (r = 0.5; p < 0.001) and diastolic blood pressure (DBP) (r = 0.3; p < 0.001). Furthermore, in the multivariable-adjusted regression analysis, the NC was positively associated with both the SBP (adjusted R² = 0.3, β = 2.0 (95% CI = 1.1; 2.9), p < 0.001) and DBP (adjusted R² = 0.1 β = 0.950 (95% CI = 0.3; 1.6), p = 0.008) adjusted for age, gender, body mass index, waist-to-height ratio, alcohol, and smoking. The NC is related to BP among historically disadvantaged university students.

The correlation between neck circumference and risk factors in patients with hypertension: What matters

It is necessary to identify the relationship between neck circumference and cardiovascular risk factors in patients with hypertension.Patients with hypertension treated in our hospital were included. The height, weight, neck circumference, waist circumference, fasting blood glucose, 2 h blood glucose (2hPPG), density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), and glycated hemoglobin (HbA1c) were analyzed and compared.A total of 2860 patients with hypertension were included. There were significant differences between male and female patients in the neck circumference, waist circumference, fasting blood glucose, Total cholesterol, triacylglycerol, HDL-C, LDL-C, diabetes, metabolic syndrome, dyslipidemia, drinking and smoking (all P < .05); the neck circumference was positively correlated with waist circumference, body mass index (BMI), fasting blood glucose, 2hPPG, HbA1c, triacylglycerol and LDL-C (all P < .05), and negatively correlated with HDL-C (P = .014); as the neck circumference increases, the risk of hypertension, diabetes, metabolic syndrome, abdominal obesity, and dyslipidemia increases accordingly (all P < .05); the area under curve (AUC) was 0.827 and 0.812, and the neck circumference of 37.8 and 33.9 cm was the best cut-off point for male and female patients, respectively.Neck circumference is closely related to cardiovascular risk factors in patients with hypertension, which should be promoted in the screening of cardiovascular diseases.

Neck circumference as an indicator of elevated central adiposity in children

OBJECTIVE

We aimed to study the correlation between neck circumference (NC) and anthropometric adiposity indicators, and to determine cut-off points of NC for both sexes to identify elevated central adiposity in schoolchildren in western Mexico.

DESIGN

Cross-sectional study.

SETTING

Rural settings in western México.ParticipantsChildren from a convenience sample of six schools in Acatlán, Jalisco, Mexico (n 1802).

RESULTS

NC showed a strong positive correlation with all anthropometric adiposity indicators in both sexes, which were notably higher in boys regardless of age. Noteworthy, waist circumference displayed the highest significant correlation when analysed by both age and sex. As age increased, NC cut-off points to identify elevated central adiposity ranged from 25·7 to 30·1 cm for girls and from 27·5 to 31·7 cm for boys.

CONCLUSIONS

NC could be used as a simple, inexpensive and non-invasive indicator for central obesity assessment in Mexican schoolchildren.

The association of neck circumference with risk of metabolic syndrome and its components in adults: A systematic review and meta-analysis

BACKGROUND & AIMS

Several prior studies suggested that neck circumference (NC) is a reliable diagnostic tool for risk of metabolic syndrome (MetS) and its features. However, not all studies support this view. Therefore, we aimed to perform a meta-analysis to summarize the association between NC with MetS and its components in adult populations.

METHODS AND RESULTS

PubMed/Medline, Web of Knowledge, and Scopus electronic databases were searched until May 31, 2017 to find relevant English-language papers. We included studies that examined the association of NC with risk of MetS, or at minimum, one of its components as outcomes. Of 2628 publications identified, 19 papers met selection criteria. We found no association between NC and MetS (odd ratio (OR): 0.73; 95% CI: 0.003, 1.47). However, there was a positive association between NC and waist circumference (WC) (r = 0.85; 95%: 0.75, 0.95; I²: 98.2%; p = 0.0001), BMI: (r:0.88; 95% CI: 0.74, 0.91, I²:97.3%), triglycerides (TG) (OR: 1.87; 95% CI: 1.60, 2.19; I²:58.4%; p = 0.03), TC (r:0.14; 95%CI: 0.05, 0.23, I²:94.1%), LDL-C (r: 0.18; 95%CI: 0.07, 0.29, I²:94.3%), hypertension (OR: 1.94; 95% CI:1.43, 2.64, I²:87.3%), systolic (r: 0.21, 95%CI: 0.19, 0.23; I²:67.1%) and diastolic blood pressures (r: 0.20, 95%CI: 0.16, 0.23; I²:79.7%), low HDL-C (r:-0.21; 95% CI: -0.26, -0.15, I² = 92.5%), as well as fasting blood sugar (FBS) concentrations (r: 0.20, 95%CI: 0.16, 0.24; I²:88.1%).

CONCLUSION

Subjects with higher NC were at approximately two-fold higher risk for hypertriglyceridemia compared to those with lower NC. We found positive associations between NC, WC, BMI, hypertension, FBS, TC, LDL-C, SBP, DBP, and low HDL-C concentrations. However, heterogeneity was considerably high. Therefore, the findings should be taken with caution. Future studies using longitudinal designs are needed to further understand the association between NC and features of MetS.

A relação pescoço-coxa (RPCx) pode servir como índice antropométrico para diagnosticar a síndrome metabólica?

Resumo Objetivo: Investigar a Relação Pescoço-Coxa (RPCx) como índice antropométrico para diagnosticar a Síndrome Metabólica em estudantes universitários brasileiros. Métodos: Estudo transversal com 691 adultos (> 18 anos) de ambos os sexos. Foram investigados os seguintes parâmetros antropométricos: circumferência abdominal, circumferência de pescoço, circumferência de coxa, índice de massa corporal e RPCx. Além disso, foram coletados dados laboratoriais, tais como: triglicérides, glicemia e colesterol HDL. Resultados: Foram encontrados valores de circumferência abdominal (83,59 ± 10,68 cm), de pescoço (37,29 ± 2,36 cm), coxa (52,37 ± 5,71 cm) e relação de pescoço-coxa (0,72 ± 0,07 cm) superiores entre os homens (p <0,001). Ao analisar os componentes da síndrome, a RPCx mostrou uma correlação linear positiva estatisticamente significante com todos. Conclusão: Nesta pesquisa foi demonstrado que a RPCx não serve como critério diagnóstico da SM, mas indica alterações nos componentes constituintes da síndrome.

Neck circumference, cardiometabolic risk, and Framingham risk score: Population-based study

ABSTRACT Objective To investigate the association of the neck circumference with cardiometabolic risk factors and the Framingham risk score. Methods The study was a cross-sectional population-based one with 948 adults (522 women) aged 20–59 years. Sociodemographic, anthropometric, body composition, behavioral, biochemical, and hemodynamic factors were evaluated. The association between neck circumference, anthropometric variables, body composition and cardiometabolic risk factors was evaluated by multiple linear regression, adjusted for sociodemographic and behavioral factors. Results Are presented as β coefficients, standard errors, and 95% confidence intervals with a 0.05 significance level. The neck circumference was positively associated with triglycerides, insulin resistance index, uric acid, systolic and diastolic blood pressure, C-reactive protein, waist circumference, body mass index and total body fat estimated by dual energy X-ray absorptiometry. The neck circumference and high-density lipoprotein cholesterol were negatively associated, even after adjustment for sociodemographic and behavioral factors. Individuals with a neck circumference below the cut-off point to predicting cardiometabolic risks, 39.5cm for men and 33.3cm for women, had lower probability of having a coronary event in 10 years compared to those with a neck circumference above the cut-off point. Conclusion Neck circumference is an alternative measure to estimate body fat and as an additional marker to screen for cardiovascular risk diseases.

Appropriate neck circumference cut-off points for metabolic syndrome in Turkish patients with type 2 diabetes

OBJECTIVE

To investigate the association between neck circumference (NC), overweight, and metabolic syndrome (MS) in Turkish patients with type 2 diabetes.

METHODS

A total of 264 diabetic patients (mean age: 52.9±8.1 years) were recruited from two centers in Istanbul to perform anthropometric measurements, including waist and hip circumference, NC, and body mass index. Blood pressure, fasting glucose, and lipid profile (total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and triglyceride levels) were determined.

RESULTS

NC correlated with waist circumference, systolic blood pressure, and triglycerides in men, whereas NC only correlated with waist circumference in women. Additionally, NC was shown to negatively correlate with high-density lipoprotein cholesterol in both men and women. Receiver operating characteristic analysis showed that the area under the curve for NC and overweight was 0.95 for both men and women (P<0.001). Moreover, a NC of 38cm for men and 37cm for women was the best cut-off point for determining overweight. The area under the curve for NC and MS was 0.87 for men and 0.83 for women (P<0.001). A NC of 39cm for men and 37cm for women was the best cut-off point to determine participants with MS.

CONCLUSIONS

Our findings suggest a positive correlation of NC with MetS in Turkish patients with type 2 diabetes, and could be a useful and accurate tool to identify MS.