Showing 11 results for Obesity
A.r Dorosty , P Hodjat ,
Volume 3, Issue 2 (5-2005)
Abstract
Obesity is excessive body fat on a scale that adversely affects health. Childhood obesity is increasing world-wide and is an important risk factor for many chronic diseases. In order to explore the association between childhood obesity and putative risk factors among primary school girls, the present study was carried out.
In this study, all the obese students (according to Iranian references) from a sample of 835 school girls aged 8-11y were considered as the case group (n=134). 134 control students with normal weight (5th percentile < BMI ≤ 85th Percentile) were chosen randomly and obese children were matched with non–obese children by age, school and classroom. For each subject, we interviewed the mother and filled 3 questionnaires covering potential risk factors for obesity.
Results showed that obese children had significantly higher probability of having obese parents compared to controls. Daily energy and macronutrient intake and frequency of consuming fast foods and fizzy drinks were higher in the case group.
Compared to normal children, obese ones spent more time in front of the TV or the computer non-obese children the differences were statistically significant (P<0.05).
The duration of daily physical activity, energy and macronutrient intake per kilogram body weight, and parental education were all significantly higher in the control group (P<0.05). Most obese girls were born in winter or autumn while non–obese girls were born mostly in spring and summer (P<0.015).
Obesity is a multi-factorial syndrome involving genetic, environmental and behavioral alterations. In this study, daily energy and macronutrient intake, physical activity, parental education, season of birth, frequency for eating fast-foods and fizzy drinks and time spent watching T.V. and videos or working with computers turned out to be risk factors.
A.r Dorosty, Z Karamsoltani, A Jazayeri, F Siyasi, M.r Eshraghian,
Volume 6, Issue 1 (6-2008)
Abstract
Background and Aim: Food and nutrition is one of the most essential needs of human societies and gaining sufficient and suitable food for all people is based on food security. Children are one of the most volnurable groups, so researchers and nutritionest emphasize on studying and analyzing of different aspects, effects and associated facters on prevalence of food insecurity and obesity among children. This study aimed to determine the association between obesity and food security and some related family factors inYazd primery school children.
Materials and Methods: Using two stage cluster sampling from 35 Yazd primary schools, a total of 3245 students aged 9-11y (1587 boys & 1658 girls) were randomly selected. Then 187 students 9-11y who had a BMI 95th percentile of Hosseini et al. (1999) reference, were identified as obese and 187 same age and gender pupils (having 15th<85th percentile) were studied as controls. Data were collected by demographic and USDA questionnaires.
Results: We found that the prevalence of obesity among student aged 9-11 years was 13.3% and the prevalence of food insecurity was 30.5%. Data analysing indicated that with adjusting variables such as "paternal education and occupation, economic status" there was a significant association between obesity and food insecurity in these levels: father's educated by secondary school, self-employment and low and moderate level of economic status. However, no significant association was observed between obesity and food insecurity when family size and maternal education were adjusted.
Conclusion: Paternal education and occupation, and family economic status were recognised as associated factors with food insecurity but other factors didn,t show significant relationship. There is lack of published information regarding some factors affecting food security therefore, it is necessary to performe such studies in other regions too.
Sa Keshavarz , M Ramezanipour , M Jalali , Mr Eshraghian , H Sadrzade Yeganeh ,
Volume 6, Issue 2 (7-2008)
Abstract
Background and Aim: Body mass index (BMI) is a generally accepted indicator of body weight and obesity. A BMI>30 indicates obesity, which is regarded as a risk factor for many diseases, because their pathogeneses are associated with increasing numbers of free radicals derived from oxygen. The present study was a clinical trial carried out in order to study the effects of weight loss on enzymatic antioxidants and its association with dietary intakes of copper, zinc, iron, selenium and, magnesium in obese women.
Materials and Methods: Thirty obese women, 19-50 years old, of whom informed consent was obtained, were included in the study. Information was collected on their general characteristics, and anthropometric measurements were made. A diet with a 500- to 1000-calorie deficit was recommended to the subjects, on the basis of micronutrient intakes estimated through a 24-hour dietary recall questionnaire 3 days before and after the intervention. The aim was to bring about a weight loss of 10%. A 10-ml blood sample was taken from each subject, before and after intervention, for enzymatic measurement of enzymatic antioxidants in the red blood cells.
Results: Weight loss caused a significant increase (p<0.01) in the mean glutathione reductase (GR) and catalase (CAT) no statistically significant change occurred in the mean values of superoxide dismutase (SOD) or glutathione peroxidase (GPX). The only association between the enzymes and trace elements (Cu, Zn, Fe, Mg, Se) was a negative linear correlation between daily zinc intake and GPX before intervention (r=0.395, p<0.05)
Conclusion: A 10% reduction in body weight might be an effective step toward increasing levels of enzymatic antioxidants which would minimize injuries caused by free radicals and reduce oxidative stress in obese women. Attention should be paid to the dietary intakes of micronutrients essential for the activities of these enzymes.
G Sotoudeh, S Khosravi, F Khajehnasiri, F Koohdani,
Volume 8, Issue 1 (6-2010)
Abstract
Background and Aim: Weight status perception is an important factor in nutritional behavior. The aim of this study was to determine Islamshahr women's self-perception of their obesity status and perception of their husbands' opinions regarding women's obesity status, as compared with the actual central obesity status of the women.
Materials and Methods: This was a cross-sectional (descriptive-analytical) study carried out in 2003 on a cluster sample of Islamshahr women aged 20-65 years (n = 704). Data were collected by interviews and weight, height, and waist and hip circumferences were measured. A waist-to-hip ratio (WHR) greater than 0.849 was considered as central obesity. Based on the body mass index [BMI=weight/height2(kg/m2)], underweight, normal, overweight, and obese were defined as a BMI <18.5, 18.5-24.9 , 25-29.9, and ≥30, respectively.
Results: About 35% of the women with central obesity considered themselves underweight or normal. Married women's perception of husbands' opinions regarding their obesity status showed about 45% misclassification. Women with central obesity who thought their husbands would assess them as underweight or normal were more likely [OR=18.6, 95% CI: 9.1 to 38.2] to underestimate their obesity status as well.
Conclusion: Misperception of obesity status is common among Islamshahr women. Considering the role of central obesity in metabolic diseases, menstrual disorders and increasing serum androgens, conducting nutrition education programs is essential for prevention and control of central obesity in the region studied.
Mahsa Ghavipour, Ahmad Saedisomeolia, Mahmoud Jalali, Giti Sotoudeh, Mohammadreza Eshraghyan,
Volume 10, Issue 2 (10-2012)
Abstract
Background and Aim: Tomatoes are the richest source of lycopene, a potent antioxidant. Tomato products improve antioxidant defenses and reduce the risk of inflammatory diseases, at least partly due to the presence of lycopene. Lycopene, as an anti-inflammatory agent, prevents the production of inflammatory cytokines. Obesity is a chronic inflammatory condition in which the increased level of body fat leads to an increase in circulating inflammatory mediators. We hypothesized that the consumption of a lycopene-rich food would reduce inflammation in people with overweight or obesity.
Materials and Methods: One hundred and six overweight or obese female students of Tehran University of Medical Sciences were enrolled and randomly allocated to an intervention group (n=53) or a control group (n=53), consuming 330 ml/day of tomato juice or water respectively, for 20 days. At baseline and day 20, serum concentrations of interleukin-6, interleukin-8, tumor necrosis factor-α and high sensitivity C-reactive protein were analyzed by ELISA and compared between groups.
Results: Serum concentrations of interleukin-8 and tumor necrosis factor-α decreased significantly in the intervention group compared to the control group and compared to the baseline. Subgroup analysis indicated that this effect was confined to subjects who were overweight. Among obese subjects, serum interleukin-6 concentration was decreased in the intervention group compared to the control group, with no observed differences in interleukin-8 and tumor necrosis factor-α.
Conclusion: Tomato juice reduces inflammation in overweight and obese females. Thus, increasing tomato intake may provide a useful approach for reducing the risk of inflammatory diseases such as cardiovascular disease and diabetes, associated with obesity.
Parivash Nooraliey, Ahmadreza Dorosti Motlagh, Seyed Mostafa Hosseini, Javad Karimi, Reyhaneh Nooraliey,
Volume 13, Issue 1 (6-2015)
Abstract
Background an d Aim : Overweight and obesity are one of the most serious health and social problems in the world today. The fact that obesity is highly prevalent among adolescents is particularly alarming, considering that the disease has many undesirable physical and mental consequences. This study examined the relationship between overweight and obesity and the quality of life.
Materials and Methods : A total of 400 high school girl-students, selected by the two-stage cluster sampling, completed the demographic and sf-36 quality of life questionnaires. Their weights and heights were measured using the Seca scale (precision 100 g) and non-elastic tape (precision 0.5 cm) by the researcher, respectively.
Results : The prevalence of overweight and obesity in the sample was 21.8%. The mean scores of general health, physical health, physical limitations, and social functioning were significantly lower among overweight and obese, as compared to normal, subjects. Dissatisfaction with physical fitness, not living with both parents, poor economic conditions and skipping breakfast were factors associated with a lower quality of life.
Conclusion : Considering the high prevalence of overweight and obesity among high school girls and their significant correlations with the physical dimensions of quality of life, attention to obesity as a major health and social problem on the part of health planners and policy-makers is of utmost importance.
Fezzeh Mohammadhassani, Alireza Esfandiarinezhad, Mohammad Reza Asad, Afshar Jafari,
Volume 13, Issue 1 (6-2015)
Abstract
Background and Aim: Considering the uncertainties about associations between orexin-A and obesity, the present study was conducted to determine the effects of 8 weeks of endurance training and high intensity interval training ( HIIT) on plasma levels of orexin-A and some anthropometric parameters in obese adolescent boys.
Materials and methods: In this semi-experimental project 35 healthy, inactive and obese boys (mean age 15.5±0.69 years, mean body mass index (BMI) = 28.72±2.20, equal to or higher than the 95th percentile) were randomly divided into three groups of equal numbers, namely, control, endurance training, and HIIT. The endurance training and the HIIT group participated in eight weeks of endurance training (25-40 minutes running per day, with an intensity 65-85% Heart Rate Reserve) and eight weeks of HIIT (30 seconds running with an intensity 90-95% Heart Rate reserve, 4-7 repetitions a day and two minutes of a rest interval with 50-55% Heart Rate reserve), three days per week, respectively. Plasma levels of orexin A, anthropometric measurements (waist-to-hip ratio, body fat percentage and body mass index) and VO2 max were determined before and 48 hours after the last session of the training. Data were analyzed and are reported as mean ± SD using repeated measure ANOVA (p < 0.05).
Results : Despite a decreasing trend in the plasma orexin-A level in the control and HIIT groups and its rising trend in the endurance training group, no statistically significant differences were observed between the control and experimental groups (P>0.05). However, HIIT and endurance training caused significant reductions in the anthropometric parameters such as body fat percentage (8.7%, 9.7%), body mass index (1.6%, 1.9%) and waist to hip ratio (2.7%, 2.9%), accompanied by a significant increase in the VO2 max (6.7%, 10.9%) (p<0.05).
Conclusion: Endurance training is more effective than HIIT as regards improvement in body composition of obese adolescent boys, although the changes may not be in line with changes occurring in plasma orexin-A levels. It is recommended that more studies be conducted in this area, controlling sleep, nutrition and changes due to puberty, and with longer durations of exercise.
Zahra Taghadomi Masoumi, Mohammad Reza Eshraghian, Mehdi Hedayati, Hamideh Pishva,
Volume 14, Issue 4 (3-2017)
Abstract
Background and Aim: Obesity is now recognized as the most prevalent metabolic disease worldwide.A decrease in resting energy expenditure (REE) may increase risk of obesity. This study was carried out to compare dietary, biochemical, anthropometric and body composition parameters and physical activity in obese women with a normal and those with a low REE.
Materials and Methods: A total of 49 subjects (women, 30-50 years old), were divided into three groups: group one (obese, n = 16) with a body mass index (BMI) of 28-39.9 and a normal REE, group 2 (obese, n = 17) with a BMI of 28-39.9 and a low REE, and group 3 (n = 16) with a normal BMI and a normal REE as the control group. Anthropometric measurements, body composition, REE and fasting blood lipid profile were determined in the 3 groups. In addition, dietary intakes and physical activity were assessed using valid questionnaires.
Results: There was no significant difference in body composition between the two obese groups. However, REE was significantly lower in the obese group with a lowREE than in the other 2 groups.Energy and macronutrient intakes and physical activity were not statistically different among the 3 groups. Neither was there any significant difference between the 2 obese groups (one with a normal and one with a low REE) as regards lipid profile.
Conclusion: The results of this study indicate that in some obese people the resting energy expenditure is much lower as compared to that in other obese people, although their body composition, age, sex, dietary intake, lipid profile and physical activity are not different.
Seyed Mohammad Mojtahedzadeh, Kourosh Holakouie-Naieni, Shahrzad Nematollahi, Amir Hossein Mazarei,
Volume 15, Issue 1 (6-2017)
Abstract
Background and Aim: Considering the protection of, and safeguarding, the health of industrial workforce, this study was conducted to determine the prevalence of overweight and obesity in the personnel of Abadan oil refinery in the south-west of Iran and factors related to it.
Materials and Methods: The study included 721 oil refinery staff members randomly selected based on the yearly occupational health examination records. The information recorded included anthropometric measurements and blood test results; in addition, Breslow lifestyle and Global Physical Activity (GPAQ) questionnaires were completed for each subject.
Results: The mean body mass index (BMI) was 28.2 for men and 27.5 for women. The prevalence of obesity and overweight were 29.8% and 48.7%, respectively. Further analysis of the data showed that the prevalence rates were different between men and women; while 48.6% and 30.24% of the men suffered from overweight and obesity, respectively, the corresponding proportions among women were 50% and 15%. Overweight and obesity were associated with age, fasting blood glucose level, lipid profile and hypertension (in all cases p < 0.001).
Conclusion: The prevalence of overweight and obesity among Abadan oil refinery staff is higher as compared to the mean values in the general population in Iran or to personnel of other industries globally. Development and implementation of public educational programs with particular emphasis on high-risk individuals, such as middle-aged people and those with a low socioeconomic status, and focusing on healthy lifestyle and rotation shift workers can be effective, resulting in improvements in physical and general health of the personnel.
Somayeh Mokhtari Molaei, Roya Sadeghi, Azar Tol, Maryam Sabouri, Shahrzad Saadat Gharin, Abbas Rahimi Foroushani,
Volume 20, Issue 3 (12-2022)
Abstract
Background and Aim: Food preferences and health literacy ─ key determinants of food choices in childhood and adolescence ─ are determinants of chronic diseases in adulthood. This study aimed to determine associations between food preferences, health literacy and body mass index (BMI) among elementary school students in Malekan city, east Azarbayejan Province, Iran in 2021-2022.
Materials and Methods: This cross-sectional descriptive-analytical study included 582 male and female primary-schoolers in the fourth, fifth and sixth grades in both the public and private schools in Malekan County (Malekan, Lilan, and Mubarakshahr) selected by the two-stage randomized cluster method. A questionnaire including background questions and questions about health literacy and a researcher-made checklist of food preferences was used to collect data online using the Pros-Online Platform. The content validity ratio and index were used to determine validity and Cronbach's alpha index to check for the reliability of the questionnaire (CVI=0.98, CVR=0.91, Cronbach's alpha > 0.7). Data were analyzed using Mann-Whitney, t-test, one-way analysis of variance, Kruskal-Wallis and Chi-square tests at a significance level of 0.05 using SPSS 26.
Results: The average health literacy score of all the students was rather low (52.9±00.33), that of the female students (55.7±36.49) being slightly higher than that of the boys (49. 9±29.79). Further analysis of the data showed that there was a statistically significant relationship between the students' food preferences and health literacy variables (p<0.001). Furthermore, statistically significant relationships were observed between the students' BMI and their food preferences (p˂0.001) and health literacy (p˂0.001).
Conclusion: Considering the low level of health literacy of the adolescents and a positive relationship between health literacy, food preferences and BMI in adolescents, it can be concluded that increasing their health literacy will improve their healthy food choices. Therefore, it seems that interventions based on a theoretical framework aiming at increasing the students’ health literacy and improving their food preferences can be beneficial to them as a potential strategy for improving their healthy eating patterns resulting in preventing overweight and obesity.
Mina Morsali, Amin Doosti Irani,
Volume 20, Issue 4 (3-2023)
Abstract
Background and Aim: So far various medicinal treatments have been introduced to treat obesity. In this study we compared the available drugs for the treatment of obesity in women with polycystic ovary syndrome (PCOS).
Materials and Methods: This study was conducted using systematic review and network meta-analysis (NMA) methods. The major international databases including PubMed, Web of Science, Scopus, Cochrane Library and Embase were searched, the search ending in March 2022. Only randomized controlled trials (RCTs) comparing medicinal interventions in women with PCOS were included in the study. Two of the researchers were responsible for screening the retrieved sources. The Cochrane tool was used to assess the risk of bias. The loop-specific and design by treatment interaction approaches were used to assess the consistency assumption. Treatments in each network were ranked using the P-score. The random effects model was used to report the results. The results were reported at %95 confidence interval (CI). I2 statistic was used to check the heterogeneity of the studies.
Results: Out of the 9335 retrieved references, 9 studies met the eligibility criteria. There were two networks for the treatment of obesity in women with polycystic ovary syndrome: Liraglutide (1.2), [P-score=0.86, MD=-8.02(-20.99, 4.94)] as the best treatment in the first network, and Orlistat (120), [P-score=0.88, MD=-3.49 (-5.17, -1.81)] as the best treatment in the second network.
Conclusion: Based on the results of network meta-analysis, it seems that the best medicinal interventions for obesity in women with polycystic syndrome rare Liraglutide (1.2) and Orlistat (120).
