Showing 10 results for Bmi
Anahita Hamidi, Abdolhamid Bagheri, Hossein Fakkhrzadeh, Ramin Heshmat, Alireza Moayyeri, Mohammad Jafar Mahmoudi, Rasoul Pourebrahim, Ozra Tabatabaee, Bagher Larijani,
Volume 4, Issue 2 (8-2004)
Abstract
Background: Leptin is an adipocyte- derived hormone that plays an important role in the pathogenesis of obesity. Obesity is associated with insulin resistance and hyperinsulinemia. Insulin resistance is one of the factors which have been suggested to affect leptin serum levels. There are few studies evaluating the relation between leptin level and insulin resistance in childhood and adolescence obesity. The aim of the present study is to investigate this relationship in Iranian obese children.
Methods: We screened 13089 primary school students aged 7-12 years. Children were divided to overweight and normal based on the recently published National Center for Health Statistics growth charts. The number of children which were overweight was 498, of whom 347 subjects particiated in the study. Fasting blood glucose, insulin and leptin levels were measured and homeostasis model assessment (HOMA) of insulin resistance (HOMA-IR) and fasting glucose to insulin ratio (FGIR) were calculated and compared between two groups.
Results: Serum leptin levels were significantly higher in overweight compared to normal group. (11.58±8.1 and 8.1±5.2 respectively p<0.05). Before adjustment for BMI, there was a significant correlation between leptin and fasting insulin, HOMA –IR index and FGIR. (r=0.1, p< 0.05, r=0.1 , p<0.01, r=0.07, p<0.05 respectively). After adjustment for BMI, no significant correlation was found (r=0.097, p=0.20).
Conclusion: The relation between leptin and insulin resistance was weak and disappeared after adjustment for BMI. It seems that many other factors including BMI and total fat amount may affect this relationship. Further studies in this field are required.
Mehrab Marzban, Seyed Hesameddim Abbasi, Amir Hosein Lebaschi, Pooya Ghaboosi, Alireza Alaee Alamooti, Ali Ardalan,
Volume 5, Issue 1 (8-2005)
Abstract
Background: Obese patients are usually thought to have an increased risk for complications in coronary artery bypass grafting surgery (CABG). Several studies have been unclear about the relationship between obesity and the risk of adverse outcomes. The aim of this study was to assess the relationship between Body Mass Index (BMI) and in-hospital mortality following CABG.
Methods: Between December 2003 and February 2005, 1258 patients who underwent isolated CABG at Tehran Heart Center were included in this study. Patients were divided into three groups according to their BMI. Patients in group I had BMI<30 (non obese patients). In group II patients had (obese patients). Patients in group III had (very obese patients). Patients in each group were followed for in-hospital death and variables were compared to find any statistically meaningful relationship.
Results: No significant difference was found between non obese and obese patients (group I & II), but hypertension was more prominent in very obese patients (group III) and female sex was more prevalent in this group comparing two other groups. Mortality was more in the 3rd group as well. In non obese diabetic patients, the rate of mortality was higher than other patients. Logistic regression showed that BMI can not be considered as an independent factor to predict the risk of death in post CABG in-hospital mortality.
Conclusion: It seems, in coronary artery bypass grafting, BMI is not an independent factor for predicting in-hospital mortality.
Farzad Hadaegh, Azadeh Zabetian, Hadi Harati, Fereidoun Azizi,
Volume 5, Issue 4 (6-2006)
Abstract
Background: The risk of metabolic risk factors increases in Middle-Eastern adults within the normal limits of BMI. There is a report that 30.1% of the Iranian population had metabolic syndrome but no reports on the prevalence of this syndrome among individuals within the various BMI categories are available. The present study estimates the prevalence of metabolic syndrome in adult population with normal levels of BMI (18.5-24.9 kg/m2).
Methods: In this population-based cross-sectional study, a representative sample of 3444 subjects (1737 males and 1707 females) aged≥20 years with normal body mass index (BMI= 18.5-24.9 kg/m2 for both genders) were included. Demographic data were collected anthropometric indices and blood pressure were measured according to standard protocol. Biochemical analysis was conducted on fasting blood samples. The metabolic syndrome was defined according to the ATP Ш guidelines as the presence of three or more of the metabolic factors. Means and proportions, and multivariate odds ratios that quantify the association between metabolic syndrome and normal BMI quartiles, controlling for age, physical activity, smoking and education were presented.
Results: The overall prevalence of the metabolic syndrome in normal weight men and women were 9.9% (CI 95%: 8.49-11.30) and 11.0% (CI 95%: 9.5-12.4, P=0.2), respectively. Men had slightly lower BMI than women (22.4±1.8 vs. 22.5±1.7 kg/m2, P<0.001), while their WC was higher (79.8±6.6 vs.79.3±7.7 cm, P<0.001). The prevalence of high WC and low HDL was higher in women, while high blood pressure, high triglyceride levels and having at least two metabolic risk factors were more prevalent in men. Individuals at the highest category of normal BMI had significantly higher odds for being at risk for metabolic syndrome compared to those at first category (OR 5.21 for men and 2.15 for women). There was a significant increasing trend in odds for having all the metabolic syndrome components except for high FBS and high WC in men. Women revealed a similar increasing trend except for high FBS across normal BMI quartiles.
Conclusion: Normal weights Iranians have excess cardiovascular risk. Therefore interventions for prevention of diabetes and cardiovascular disease could be considered in normal weight population. On the other hand, the cut-points of BMI, suggested by WHO, may be inappropriate for the Iranian adult population.
Nosratollah Zarghami, Ghorban Mohammadzadeh, Fereidoon Mamaghani, Reza Hajhosaini, Abbas Mohajeri,
Volume 6, Issue 3 (5-2007)
Abstract
Background: Leptin is a peptide strongly correlated with adiposity and is a potential determinant of obesity and its complications. The aim of this study was to evaluate the correlation between serum leptin levels and different anthropometric indices among obese women.
Methods: This analytical descriptive study consisted of 106 women with different grade of obesity (BMI ³ 25 kg/m2) and 38 women with normal weight (BMI ≤ 25 kg/m2).serum leptin and glucose levels were measured via enzyme immunoassay and glucose oxidase methods respectively.
Results: The mean (± SE) serum leptin concentrations in apparently healthy women with normal weight ,overweight, obese grade I, and obese grade II were 6.88 ± 0.56, 39.30 ± 1.73, 46.60 ±1.04, and 48.22± 3.31 ng/ml respectively. There was a dramatic increase in serum Leptin concentration when the BMI was increased. There was statistically significant differences between all groups in serum leptin concentration (P<0.001). There was a direct and significant correlation between serum leptin concentration and BMI in obese subjects (r= 0.736, P< 0.001). There was no significant correlation between leptin with age, and leptin with WHR neither in normal weight group nor in different grades of obesity groups.
Conclusion: Our findings showed that the serum leptin levels continuously raised with increasing degree of obesity and among different anthropometric indices serum leptin concentration has significant correlation with BMI.
Ghorban Mohammadzadeh, Nosratollah Zarghami, Bagher Larijani,
Volume 7, Issue 1 (7-2007)
Abstract
Background: Resistin, an adipocyte secreted factor, has been suggested to link obesity with type 2 diabetes and insulin resistance in rodent models but its relevance to human diabetes remains uncertain. The aim of this study was to investigate the relationship between serum resistin concentrations with insulin resistance and obesity indices in type 2 diabetes and non-diabetic obese subjects.
Methods: As a case- control study 35 obese subjects with type 2 diabetes (age, 44.60 ± 6.39yr BMI, 34.23±3.92 kg/m2) and 35 obese non-diabetics (age, 43.14±9.13yr BMI, 35.54 ± 4.07 kg/m2) are recruited. Fasting lipid profile was measured by enzymatic methods. NycoCard HbA1c Kit was used to measure HbA1c.The Serum resistin, insulin and glucose levels were measured by an enzyme immunoassay using a commercially available kit and glucose oxidase methods respectively. The insulin resistance index was calculated from fasting glucose and insulin by the homeostasis model assessment (HOMA-IR) formula.
Results: The mean of insulin resistance index (HOMA-IR), HbA1c, diastolic blood pressure, triglyceride and fasting glucose in diabetics were significantly higher than non-diabetics subjects (P<0.05). Serum resistin concentrations were not different between diabetics and non-diabetics obese subjects but were significantly higher in women as compared to men (8.15±4.40 vs. 5.97±2.31 in non-diabetic) and (7.46±3.98 vs. 5.51±3.98 in diabetic) in both groups. Serum resistin was not significantly related to variables measured in both groups. In control group only, we observed a significant and negative correlation between diastolic blood pressure and resistin (r = -0.381 P = 0.024).
Conclusion: Serum resistin concentrations were not significantly different between type 2 diabetes and non-diabetic obese subjects and resistin is unlikely to be a major link between obesity and diabetes in humans.
Ghorban Mohammadzadeh, Nosratollah Zarghami, Amir Bahrami, Baghar Larijani,
Volume 7, Issue 2 (9-2007)
Abstract
Background: Adiponectin is an adipose tissue-derived hormone that low levels of this hormone are associated with obesity, insulin resistance, and type 2 diabetes. The aim of this study was to compare the serum levels of adiponectin in diabetic and non-diabetic obese individuals.
Methods: As a cross-sectional study 35 obese individuals with type 2 diabetes mellitus and 35 non-diabetic obese subjects were enrolled. Two groups were matched for age, gender and body mass index. Fasting lipid profile was measured via the enzymatic methods. The NycoCard HbA1c Kit was used to measure HbA1c.The Serum Adiponectin, insulin and glucose levels were measured via an enzyme immunoassay, using a commercially available kit and glucose oxidase methods, respectively. The HOMA and QUICKI indices were used to determine insulin resistance and insulin sensitivity, respectively.
Results: The mean of insulin resistance index (HOMA-IR), HbA1c, diastolic blood pressure, triglyceride and fasting glucose in diabetes were significantly higher than non-diabetics (P<0.05). The serum Adiponectin levels was significantly lower in diabetes than non-diabetics (15.74±6.70 vs. 21.52 ± 9.35) and was significantly higher in women than men (19.38 ± 7.33 vs. 12.68 ± 4.28) among diabetic and (24.63 ± 10.52 vs. 17.83 ± 6.21) among non-diabetics groups.
Conclusion: type 2 diabetes mellitus is associated with low serum adiponectin concentrations and probably adiponectin involved in the pathophysiology linking obesity to type 2 diabetes.
, , , , , ,
Volume 9, Issue 1 (12-2009)
Abstract
Mohammad Ali Besharat, Forough Shojaei, Alireza Kiamanesh, Hamid Amiri,
Volume 14, Issue 2 (1-2015)
Abstract
Background: The role of obesity and overweightness in emerging and enduring of serious medical and psychological disorders on one hand and the effect of psychological factors in obesity on the other hand, has made the surveys about psychological role in obesity of great importance. The aim of the present study was to compare the attachment styles and parenting styles of obese and non-obese adults. Methods: 144 individuals (72 obese patients: 48 females and 24 males) and (72 non-obese: 48 females and 24 males) participated in this study. Participants were asked to complete the Adult Attachment Inventory (AAI) and the Parental Authority Questionnaire (PAQ). Results: There was a negative relationship between secure attachment and Body Mass Index (BMI) of the obese patients, but no statistically significant relationship between insecure attachment styles (avoidant and ambivalent) was found. There was also a statistically significant relationship between the mean scores of secure and ambivalent attachment styles with BMI. Regarding the parenting styles and BMI, there was a statistically significant relationship between authoritative parenting style of the father and BMI, but no relation between authoritarian and permissive parenting styles was confirmed. Conclusion: Regarding the role of attachment styles and parenting styles of obese and non-obese adults, we can improve the physical and psychological public health of patients by changing the prevention and treatment protocols for the patients.
Masoud Rahmati, Abdolreza Kazemi, Naimeh Nekoie , Hadi Kerendi,
Volume 14, Issue 4 (5-2015)
Abstract
Background: The possibility that childhood obesity is a chronic disease in adulthood becomes enormous. The incidence and spread of obesity has increased substantially over the past two decades. The importance of personal health and quality of life has prompted researchers to study in this field. The aim of this study was to investigate the changes of serum levels of leptin, insulin, lipid profile, and body mass index after a period of sprint interval training in obese children. Methods: In this study, 30 obese children aged 9 to 11 years were randomly targeted placed in two groups (Training and control group). Sprint interval training was conducted for 8 weeks. Before and after training, measurements of leptin, insulin, lipid profile, and body mass index were measured. Data were analyzed using independent t-test (p<0.05). Results: Data analysis showed that after training, leptin, insulin and cholesterol levels were significantly reduced (p=0.001). Also, a significant decrease in BMI was seen (p=0.01). Conclusion: Sprint interval training on leptin, insulin and cholesterol in obese children has a significant impact and this exercise improve body mass index in these individuals.
Reza Ghadimi, Sadat Hoseini Seiyedi, Hasan Ashrafian Amiri, Seiyed Davoud Nasrollahpour Shirvani,
Volume 15, Issue 5 (7-2016)
Abstract
Background: In recent years, waist and hip circumference measurements simultaneously used as anthropometric factors to determine the prevalence of overweight and obesity in adults, in addition to Body Mass Index. Some studies have confirmed the relationship between the above mentioned factors and the hematological parameters of cardiometabolic disorders. This study aimed to determine the association between anthropometric factors and hematological factors in 25-60 years old couples of Babol, Mazandaran.
Methods: This cross-sectional descriptive study was conducted in spring 2014, on research population of 25-60 year old couples who were selected by random cluster. Data collected through a researcher-made questionnaire containing about demographic variables, underlying factors, dependent variables; its validity and reliability were confirmed. The collected data were analyzed by SPSS18 software.
Results: Men’s BMI had significant direct relationship with systolic and diastolic blood pressure, fasting blood sugar, cholesterol and triglycerides (p<0.05). Women’s BMI had a significant direct relations with systole and diastole blood pressure, fasting blood sugar and triglycerides (p<0.05). There was a significant direct relationship between men’s and women’s Waist/Hip Ratio (WHR) with systole and diastole blood pressure, fasting blood sugar, cholesterol and triglycerides (p<0.05). There was a significant direct relationship between men’s and women’s anthropometric indices (apart from the BMI) associated with serum biomarkers of cardiometabolic disorders (p<0.05).
Conclusion: The results showed that increased BMI and WHR in couples, increases the amount of cardiometabolic serum biomarkers and may directly and indirectly cause the risk of chronic diseases.
