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Designation of a Palm-Free Frying Oil Formulation Based on Sunflower, Canola, Corn and Sesame Oils Using D-Optimal Mixture Design 以葵花籽油、菜籽油、玉米油和芝麻油为原料的无棕榈煎炸油配方设计
Pub Date : 2019-11-01 DOI: 10.29252/nfsr.6.4.29
Z. Amiri, M. H. Naeli, Z. Babaei, Student
Background and Objectives: Oils used in frying should include special characteristics such as high oxidative stability, prolonged shelf life, low price, abundance and availability and desirable flavors. Nowadays, consumers are further interested in low saturated frying oils. Recently, manufacturers focus on eliminating palm oil derivatives (as a major vegetable source of saturation) from frying oil formulations. Therefore, achievement of balances between nutritional, technological and economic aspects is a big challenge for the oil industries. Materials and Methods: The aim of this study was to design and develop a palm-free frying oil formulation based on oils of sunflower (10–30%), canola (10–70%), corn (10–30%) and sesame (10–30%) using D-optimal mixture design. Linolenic acid (Ln) content, trans fatty acids (TFA), saturated fatty acids (SFA), oxidative stability index (OSI) and smoke point (SP) were considered as the response variables. To evaluate performances of these blends during deep frying processes (180 °C for 200 min), total polar compound (TPC) content, peroxide value (PV) and free fatty acid (FFA) content of the blends were assessed. Results: In summary, the total polar compound content, PV and FFA content of the blends included 15.87–19.41%, 16.41–20.58 meq O2/kg oil and 0.55–0.77%, respectively; fitted in published recommending ranges. All responses were fitted in the best way (R 2 > 0.91) to the linear model used for optimization. The optimal formulation included canola (40.675%), sesame (26.015%), sunflower (23.310%) and corn (10.000%) oils and all experimental values of this formulation were in the confidence interval. This indicated the high accuracy of designation and optimization of the
背景和目的:用于油炸的油应具有特殊的特性,如高氧化稳定性,长保质期,低价格,丰富和可用性以及理想的风味。如今,消费者对低饱和油炸油进一步感兴趣。最近,制造商专注于从煎炸油配方中消除棕榈油衍生物(作为主要的饱和蔬菜来源)。因此,实现营养、技术和经济方面的平衡是石油工业面临的一大挑战。材料与方法:以向日葵(10-30%)、菜籽油(10-70%)、玉米油(10-30%)和芝麻油(10-30%)为原料,采用d -最优混合设计,设计开发无棕榈煎炸油配方。以亚麻酸(Ln)含量、反式脂肪酸(TFA)、饱和脂肪酸(SFA)、氧化稳定性指数(OSI)和烟点(SP)为响应变量。为了评价这些共混物在油炸过程(180°C, 200 min)中的性能,评估了共混物的总极性化合物(TPC)含量、过氧化值(PV)和游离脂肪酸(FFA)含量。结果:综上所述,共混物总极性化合物含量为15.87 ~ 19.41%,PV含量为16.41 ~ 20.58 meq O2/kg油,FFA含量为0.55 ~ 0.77%;符合公布的推荐范围。所有响应均以最佳方式拟合(r2 > 0.91)。最佳配方为菜籽油(40.675%)、芝麻油(26.015%)、葵花籽油(23.310%)和玉米油(10.000%),试验值均在置信区间内。这表明该方法的设计和优化具有较高的精度
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引用次数: 3
Effects of Eight Weeks of Resistance Training on Muscle Myostatin Gene Expression and Insulin Resistance in Male Wistar Rats with Type 2 Diabetes 8周阻力训练对2型糖尿病雄性Wistar大鼠肌肉肌肉生长抑制素基因表达和胰岛素抵抗的影响
Pub Date : 2019-11-01 DOI: 10.29252/nfsr.6.4.9
Majid Hassan Qomi, S. Arshadi, Abdolali Banayifar, Y. Kazemzadeh
Background and Objectives: Muscular atrophy is one of the indicators of uncontrolled diabetes. The aim of the current study was to investigate effects of eight weeks of resistance training (RT) on myostatin gene expression in soleus muscles and insulin resistance in streptozotocin (STZ)-induced diabetic rats. Materials and Methods: In general, 14 Wistar male rats weighing 200–250 g and aging 8–10 weeks were selected for the study. Then, a newly prepared diabetic STZ solution was intraperitoneally injected to the rats. Animals were randomly divided into two groups of controls and resistance training diabetes. The resistance training protocol was carried out at ten repetitions as climbing up the ladder with 100% of the body weight for eight weeks, five days a week. Nearly 48 h after the last training session, soleus muscles of the rats were removed and the myostatin gene expression was assessed. Statistical data analysis was carried out using independent t-test at a significance level of P <0.05. Results: Results of the independent t-test showed that the mean expression rate of myostatin protein genes in rat soleus muscles of the resistance training group was significantly lower than that of the control group (P = 0.013). Furthermore, levels of glucose, insulin and insulin resistance were significantly lower in resistance training group, compared to those in control group (P-values of 0.001, 0.005 and 0.001, respectively). A significantly positive correlation was seen between the mean expression of myostatin protein gene and the blood glucose (P = 0.012, r = 0.539), as well as the expression of myostatin protein gene and the insulin resistance (P = 0.015, r = 0.525). Conclusions: Results of this study indicated that resistance training decreased myostatin expression and could improve insulin resistance in rats with type 2 diabetes. Hence, targeting myostatin might be a new therapeutic approach for the treatment of metabolic diseases such as obesity, diabetes and metabolic syndrome.
背景与目的:肌萎缩是糖尿病未控制的指标之一。本研究旨在探讨8周阻力训练(RT)对链脲佐菌素(STZ)诱导的糖尿病大鼠比目鱼肌肌肉生长抑制素基因表达和胰岛素抵抗的影响。材料与方法:一般选取体重200 ~ 250 g、8 ~ 10周龄Wistar雄性大鼠14只。然后将新制备的糖尿病STZ溶液腹腔注射给大鼠。实验动物随机分为对照组和抗阻训练组。阻力训练方案进行了十次重复,以100%的体重爬上梯子,持续八周,每周五天。最后一次训练后约48小时,取大鼠比目鱼肌,评估肌肉生长抑制素基因表达。统计学资料分析采用独立t检验,P <0.05为显著性水平。结果:独立t检验结果显示,阻力训练组大鼠比目鱼肌中肌生长抑制素蛋白基因的平均表达率显著低于对照组(P = 0.013)。与对照组相比,抗阻训练组血糖、胰岛素和胰岛素抵抗水平均显著降低(p值分别为0.001、0.005和0.001)。肌生长抑制素基因的平均表达量与血糖呈显著正相关(P = 0.012, r = 0.539),与胰岛素抵抗呈显著正相关(P = 0.015, r = 0.525)。结论:抗阻训练可降低2型糖尿病大鼠肌肉生长抑制素的表达,改善胰岛素抵抗。因此,靶向肌生长抑制素可能是治疗代谢性疾病如肥胖、糖尿病和代谢综合征的新方法。
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引用次数: 0
Maternal Nutrition Status are Strongly Associated to Schoolchildren Z-Scores for Height and BMI in Rural Settings 母亲营养状况与农村儿童身高和体重指数z分数密切相关
Pub Date : 2019-07-10 DOI: 10.29252/NFSR.6.3.1
D. Angkasa, Nadiyah Nadiyah
Background and Objectives: Parental factors, including social and anthropometric factors, play a vital role in children longterm nutritional status. The objective of this study was to investigate correlations between parental factors and nutritional status of the schoolchildren in a rural setting of Indonesia. Materials and Methods: This cross-sectional study was carried out during May 2018. Totally, 146 schoolchildren from ten primary public schools in Sepatan Timur, Tangerang, Indonesia, were involved in the study. Structured questionnaires were used to collect socio-demographic data (educational level, employment status and number of children) and estimated anthropometric measures (body weight and height). Digital weighing scales and standard microtoises were used to measure children weight and height, respectively. Anthropometric indices, height for age (HAZ) and body mass index for age (BAZ) Z-scores were calculated using WHO AntroPlus. Moreover, multiple regression analysis was used in the study. Results: Nearly 19.2, 11.6 and 16.4% of the schoolchildren were stunting, wasted and overweight, respectively. Maternal nutrition status were significantly associated with schoolchildren HAZ (β 95% CI = 0.367 [0.009–0.724]) and BAZ (β 95% CI = 0.926 [0.428–1.423]) scores. The BAZ scores of the children were inversely associated with maternal education levels (β 95% CI = -1.206 [-2.000; -0.441]). Paternal nutrition status were significantly associated with children HAZ (β 95% CI = 0.419 [0.075; 0.762]) scores. Conclusions: Parental anthropometric measure and educational status significantly contribute to development of schoolchildren nutritional status in the rural setting.
背景与目的:父母因素,包括社会因素和人体测量因素,在儿童的长期营养状况中起着至关重要的作用。本研究的目的是调查父母因素与印度尼西亚农村学童营养状况之间的相关性。材料与方法:本横断面研究于2018年5月进行。共有来自印度尼西亚丹格朗Sepatan Timur 10所公立小学的146名学童参与了这项研究。使用结构化问卷收集社会人口统计数据(教育水平、就业状况和子女数量)和估计的人体测量数据(体重和身高)。分别用数字称和标准微体计测量儿童体重和身高。使用WHO AntroPlus计算人体测量指数、年龄身高(HAZ)和年龄体重指数(BAZ) z -score。并采用多元回归分析。结果:小学生发育迟缓、消瘦和超重的比例分别为19.2%、11.6%和16.4%。母亲营养状况与学龄儿童HAZ (β 95% CI = 0.367[0.009-0.724])和BAZ (β 95% CI = 0.926[0.428-1.423])得分显著相关。儿童的BAZ得分与母亲受教育程度呈负相关(β 95% CI = -1.206 [-2.000;-0.441])。父亲营养状况与儿童HAZ显著相关(β 95% CI = 0.419 [0.075;0.762])的分数。结论:父母的人体测量水平和受教育程度对农村小学生营养状况的发展有显著影响。
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引用次数: 0
Extraction of Phenolic Compounds from Black Mulberry Using Aqueous, Ethanol and Aqueous-Ethanol Solvents: Effects of Heat Treatments on Chemical Properties of the Extracts 用水、乙醇和水-乙醇溶剂提取黑桑树酚类化合物:热处理对提取物化学性质的影响
Pub Date : 2019-07-01 DOI: 10.29252/nfsr.6.3.39
S. Yazdankhah, M. Hojjati, M. Azizi
Background and Objectives: Black mulberry is a juicy and dark purple to black fruit with a good balance of sweetness and tartness. This fruit is highly interested due to high quantities of anthocyanins. The bioactive compounds are often present in fruit tissues and should be released. The aim of this study was to extract bioactive compounds of black mulberries and assessment of heating process effects on the extracted compounds. Materials and Methods: Aqueous, ethanol and aqueous-ethanol solvents were used for the extraction processes. The physicochemical properties of extracts, including total phenol, total anthocyanin content, anthocyanin profile, antioxidant activity, acidity and total solids, were investigated. Then, the aqueous-ethanol extract was subjected to direct heating, microwave heating and non-thermal (gamma radiation) processes to assess their possible effects on the extract. Results: The aqueous-ethanol extract included higher total phenol (68.94 mg GAE/g) and anthocyanin contents (226.16 mg/ml), higher antioxidant activity (DPPH of 90.29% and FRAP of 1.42) as well as higher quantities of anthocyanins (cyanidin-3-glucoside, cyanidin-3-rutinoside and cyanidin-3-xyloside of 277.36, 53.21, and 11.44 mg/ml, respectively). It was observed that less time and power of heating, microwave and gamma radiation conditions included less deteriorative effects on anthocyanin compounds and thus a higher antioxidant activity was seen. Conclusions: Aqueous-ethanol solvents include further extraction efficiencies on phenolic compounds and anthocyanins and are considered as appropriate chemicals for the extraction of bioactive compounds from black mulberries. Furthermore, moderate heating conditions can preserve higher quantities of anthocyanins.
背景和目的:黑桑葚是一种多汁的深紫色至黑色水果,甜味和酸味平衡良好。这种水果因其花青素含量高而备受关注。这些生物活性化合物通常存在于水果组织中,应该释放出来。本研究的目的是提取黑桑葚的生物活性物质,并评价加热过程对提取物质的影响。材料和方法:采用水、乙醇和水-乙醇溶剂进行提取。考察了提取物的理化性质,包括总酚、总花青素含量、花青素外形、抗氧化活性、酸度和总固形物。然后,对水乙醇提取物进行直接加热、微波加热和非热(伽马辐射)处理,以评估它们对提取物的可能影响。结果:水乙醇提取物总酚含量(68.94 mg GAE/g)和花青素含量(226.16 mg/ml)较高,抗氧化活性(DPPH为90.29%,FRAP为1.42)较高,花青素含量(花青素-3-葡萄糖苷、花青素-3-芦丁苷和花青素-3-木糖苷分别为277.36、53.21和11.44 mg/ml)较高。观察到加热、微波和γ辐射时间和功率越小,对花青素类化合物的变质作用越小,因此抗氧化活性越高。结论:水-乙醇溶剂对黑桑叶中酚类化合物和花青素的提取效率较高,可作为提取黑桑叶中生物活性物质的合适溶剂。此外,适度的加热条件可以保存更多的花青素。
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引用次数: 4
Modeling of Vacuum Drying of Licorice (Glycyrrhizia glabra) Roots 甘草(Glycyrrhizia glabra)根的真空干燥建模
Pub Date : 2019-07-01 DOI: 10.29252/NFSR.6.3.33
A. Kouchakzadeh
Background and Objectives: Desiccation is a necessary procedure to eliminate moisture from foodstuffs in industries, especially pharmaceutical, food and tobacco industries. In the present study, a mathematical modeling was assessed for vacuum drying of the licorice roots. Materials and Methods: Fresh licorice roots were dried at 50 mbar. Temperatures included 22to 150°C and diameters of roots included 10 and 15 mm. A layer of licorice roots was transferred to a dish of balance on vacuum dryer and then changes in weight were recorded and moisture contents were calculated at various times. Results: Five mathematical models were adapted to empirical data. Curve expert has been used as statistical calculation. It was proved that the empirical two term’s model with high values of R 2 =98.21% was suitable for 10-mm diameter and Henderson Pabis model with R 2 =95.43% for 15-mm diameter roots. Conclusions: The two term and Henderson Pabis models were assessed by comparing coefficients of determination and standard error between the monitored and forecasted moisture ratios.
背景和目的:干燥是工业中消除食品水分的必要步骤,特别是制药、食品和烟草工业。在本研究中,评估了甘草根真空干燥的数学模型。材料和方法:新鲜甘草根在50毫巴下干燥。温度为22 ~ 150℃,根直径为10 ~ 15mm。将一层甘草根转移到真空干燥机上的天平盘上,记录其重量变化并计算不同时间的水分含量。结果:五种数学模型与实证数据相适应。采用曲线专家进行统计计算。结果表明,对于直径为10 mm的根,经验两项模型的r2值为98.21%;对于直径为15 mm的根,Henderson Pabis模型的r2值为95.43%。结论:两期模型和Henderson Pabis模型通过比较监测和预测水分比之间的决定系数和标准误差来评估。
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引用次数: 0
Use of Cuminum Cyminum Essential Oil and Biarum carduchcorum Water Extract on Shelf-life Extension of lambs at Cold Storage 小茴香精油和小茴香水提取物对羔羊冷藏期延长的影响
Pub Date : 2019-07-01 DOI: 10.29252/NFSR.6.3.23
Vaez Nemati, M. Khomeiri, A. Moayedi, A. S. Mahoonak, A. Sadeghi, A. Yamchi, Iran Gorgan
Background and Objectives: Listeria monocytogenes is an emerging foodborne pathogen which may be transmitted through meat and dairy products to humans. In this study, effects of Cuminum cyminum essential oil (CCEO) and Biarum carduchcorum water extract (BCWE) and a combination of the two compounds on growth of L. monocytogenes and physicochemical, textural and sensory properties of lambs were investigated during cold storage. Materials and Methods: Effects of CCEO and BCWE on L. monocytogenes were investigated after a short time of cold storage using broth microdilution assay. Furthermore, physicochemical assessments of the lamb samples were carried out, including meat quality index (pH, color, texture) and sensory analysis. Gas chromatography-mass spectroscopy (CGMS) was used for the chemical analysis. Results: The GC-MS analysis showed that γ-terpinene (%12.57), β-pinene (%11.03), geranyl acetate (%10.81), pcymene (%9.95) and sabinene (%9.81) were the major components of the CCEO. Use of CCEO or BCWE alone decreased L. monocytogenes count to below 2 log CFU/g. Moreover, use of combined CCEO and BCWE decreased the number of L. monocytogenes to below the limit (2 log CFU/g) after 48 h. Conclusions: Results of the physicochemical parameters of the highlighted compounds revealed their useful values since these compounds showed improvement effects with no significant changes in meat quality. However, the firmness and force necessary to cut the samples treated with CCEO decreased mildly after 72 h of storage.
背景和目的:单核增生李斯特菌是一种新兴的食源性病原体,可通过肉类和乳制品传播给人类。本试验研究了Cuminum cyminum精油(CCEO)和Biarum carduchcorum水提取物(BCWE)及其组合对羔羊冷藏期间单核细胞增生乳杆菌生长及理化、质地和感官特性的影响。材料与方法:采用肉汤微量稀释法研究CCEO和BCWE对短时间冷藏后单核细胞增生乳杆菌的影响。此外,还对羊肉样品进行了理化评价,包括肉质指标(pH值、颜色、质地)和感官分析。采用气相色谱-质谱联用(CGMS)进行化学分析。结果:气相色谱-质谱分析显示,γ-萜烯(%12.57)、β-蒎烯(%11.03)、香叶乙酸酯(%10.81)、松香烯(%9.95)和沙宾烯(%9.81)是其主要成分。单独使用CCEO或BCWE可使单核细胞增生乳杆菌计数降至2 log CFU/g以下。此外,CCEO和BCWE联合使用48 h后,单核增生乳杆菌的数量降至限制值(2 log CFU/g)以下。结论:突出显示的化合物的理化参数结果显示了它们的有用价值,因为这些化合物具有改善肉品质的作用,但对肉品质没有显著影响。然而,CCEO处理的样品在储存72小时后,硬度和切割力略有下降。
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引用次数: 4
Western and Healthy Dietary Patterns and Risk of Rheumatoid Arthritis: A Case-Control Study 西方和健康饮食模式与类风湿关节炎风险:一项病例对照研究
Pub Date : 2019-07-01 DOI: 10.29252/NFSR.6.3.9
F. Rezazadeh, M. Akhlaghi, E. Aflaki
Background and Objectives: Rheumatoid arthritis (RA) is an inflammatory autoimmune disease characterized by swelling, stiffness and pain in body joints. Based on the epidemiological studies, RA is less severe in Southern Mediterranean regions, where fish, olive oil, fruits and vegetables are consumed in great quantities. Materials and Methods: This study was carried out in a case-control design. Totally, 100 RA patients (case group) and 100 age, gender and body mass index (BMI) healthy individuals (control group) were participated in the study. Dietary intakes were estimated using validated 160-item semi-quantitative food frequency questionnaire (FFQ). Food items of FFQ were grouped into 20 groups and dietary patterns were detected using principal component factor analysis. Associations between the adherence to dietary patterns and risk of RA were reported using logistic regression. Results: In general, two dietary patterns were detected, including Western dietary pattern, which was high in sweet snacks, high-fat meats, refined grains, high-fat dairies and salty snacks, and healthy dietary pattern, which was high in fishes, low-fat dairies, fruits, vegetables and olives. The RA patients had a significantly higher Western diet score than that the controls had (P < 0.001). However, no significant differences were seen in scores of healthy diet between the groups. The Western dietary pattern showed a significant positive association with RA either in the crude model (OR = 2.01, P < 0.001) or after adjustments of age, gender, education level, marital status, income, physical activity, smoking, BMI, dietary intake of vitamin E, saturated fatty acids and polyunsaturated fatty acids (OR = 4.28, P < 0.001). In contrast, the healthy dietary pattern showed an inverse significant association only after adding the highlighted parameters to the model (OR = 0.55, P = 0.003). Conclusions: This study showed a positive association between the Western dietary pattern and RA.
背景和目的:类风湿关节炎(RA)是一种以机体关节肿胀、僵硬和疼痛为特征的炎症性自身免疫性疾病。根据流行病学研究,类风湿性关节炎在南地中海地区不那么严重,那里大量食用鱼类、橄榄油、水果和蔬菜。材料与方法:本研究采用病例-对照设计。共纳入100例RA患者(病例组)和100例年龄、性别、体质指数(BMI)均为健康的个体(对照组)。采用经验证的160项半定量食物频率问卷(FFQ)估算膳食摄入量。将食材分为20组,采用主成分因子分析法对食材进行分析。使用逻辑回归报告了坚持饮食模式与RA风险之间的关联。结果:总体上发现了两种饮食模式,一种是以甜食、高脂肉类、精制谷物、高脂乳制品和含盐零食为主的西方饮食模式,另一种是以鱼类、低脂乳制品、水果、蔬菜和橄榄为主的健康饮食模式。RA患者的西方饮食评分明显高于对照组(P < 0.001)。然而,两组之间的健康饮食得分没有显著差异。无论是在粗模型中(OR = 2.01, P < 0.001),还是在调整了年龄、性别、受教育程度、婚姻状况、收入、体力活动、吸烟、BMI、膳食中维生素E、饱和脂肪酸和多不饱和脂肪酸的摄入量后(OR = 4.28, P < 0.001),西方饮食模式与RA均呈显著正相关。相比之下,健康饮食模式仅在将突出显示的参数添加到模型后才显示出显著的负相关(OR = 0.55, P = 0.003)。结论:本研究显示西方饮食模式与类风湿关节炎呈正相关。
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引用次数: 2
Self-efficacy in Weight Management and Anthropometric Indices in Tehrani Male Adolescents 德黑兰男性青少年体重管理的自我效能感和人体测量指数
Pub Date : 2019-07-01 DOI: 10.29252/NFSR.6.3.17
Maryam Gholamaliadeh, S. Doaei, Elmira Karimi, N. Kalantari, Alirea Musavi Jarrahi
Background and Objectives: Although a growing interest on the role of self-efficacy in weight management is reported worldwide, less research has been carried out on this association in adolescents. The aim of the present study was to investigate association of weight linked self-efficacy with anthropometric measurements in Tehrani male adolescents. Materials and Methods: The study was carried out on 535 male students aged 12–16 years old from two secondary high schools of District 5, Tehran, Iran. Weight, body mass index (BMI), body fat percentage and body muscle percentage were measured using bio impedance analyzer (BIA) scale. A validated weight efficacy lifestyle questionnaire (WEL) was used to assess weight linked self-efficacy. Results: The higher weight linked self-efficacy was significantly associated with further body muscle percentage (P<0.05). However, no significant association was seen between the self-efficacy and weight, height, BMI and body fat percentage of the male adolescents. Conclusions: Results of the current study suggest that self-efficacy for weight management may be unlinked to specific measures of obesity, while male adolescents with a higher self-efficacy in weight management may have a higher muscle mass. Further research is necessary to verify effects of self-efficacy on anthropometric indices in male adolescents.
背景和目的:尽管世界范围内对自我效能感在体重管理中的作用越来越感兴趣,但在青少年中进行的研究较少。本研究的目的是调查德黑兰男性青少年体重相关自我效能感与人体测量值的关系。材料与方法:选取伊朗德黑兰市第5区两所中学的535名年龄在12-16岁的男学生为研究对象。采用生物阻抗分析仪(BIA)测量体重、体质量指数(BMI)、体脂率和体肌率。采用有效的体重效能生活方式问卷(WEL)评估体重相关自我效能。结果:体重相关自我效能感越高,体肌率越高(P<0.05)。然而,自我效能感与男性青少年的体重、身高、身体质量指数和体脂率之间没有显著的相关性。结论:目前的研究结果表明,体重管理的自我效能感可能与肥胖的具体措施无关,而体重管理自我效能感较高的男性青少年可能拥有更高的肌肉量。自我效能感对男性青少年人体测量指标的影响有待进一步研究。
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引用次数: 4
Depression and Its Association with Food Insecurity in Household Women Living in Northwest of Iran 伊朗西北部家庭妇女抑郁症及其与粮食不安全的关系
Pub Date : 2019-03-10 DOI: 10.29252/NFSR.6.2.5
H. Farzaneh, Bahram Pourghassem Gargari, M. Asghari jafarabadi, Zahra Lalezadeh, P. Arzhang, Atefeh Farzaneh
Background and Objectives: Depression is the most common mood disorder, which may be experienced by most of the people during their life. Food insecurity may result in mental disorders such as anxiety and depression. The aim of this study was to assess depression status and its relation to household food insecurity in women living in Northwest of Iran. Materials and Methods: In this cross-sectional community-based study, 480 women with high-school children were selected from East Azerbaijan Province, Iran, using random sampling method. Beck depression inventory, 18-item food security questionnaires and socio-economic questionnaires were completed by the participants and then weight and height of the participants were measured. Independent sample t-test, chi-square test and binary multiple logistic regressions were used for data analysis. The P<0.05 was considered statistically significant. Results: In this study, frequencies of depression and household food insecurity included 43.1 and 48.3%, respectively. Results indicated significant positive correlations between the food insecurity and depression in women. Of the studied socio-economic variables, age, family size, economic status, occupational status of women and their husbands and educational levels were significantly associated with depression. Body mass index (BMI) of women was negatively associated with depression. Conclusions: Results showed that frequencies of depression and household food insecurity were high in participants. It seems that the improvement of socioeconomic status and subsequently improvement of the women's food security can positively affect their mental health.
背景与目的:抑郁症是最常见的情绪障碍,大多数人在一生中都可能经历过。粮食不安全可能导致焦虑和抑郁等精神障碍。本研究的目的是评估生活在伊朗西北部妇女的抑郁状况及其与家庭粮食不安全的关系。材料与方法:本研究采用随机抽样方法,从伊朗东阿塞拜疆省选取480名有高中子女的妇女为研究对象。参与者完成贝克抑郁量表、18项食品安全问卷和社会经济问卷,然后测量参与者的体重和身高。采用独立样本t检验、卡方检验和二元多元logistic回归进行数据分析。P<0.05为差异有统计学意义。结果:在本研究中,抑郁和家庭食品不安全的频率分别为43.1%和48.3%。结果表明,粮食不安全与女性抑郁症之间存在显著正相关。在研究的社会经济变量中,年龄、家庭规模、经济地位、妇女及其丈夫的职业地位和教育水平与抑郁症显著相关。女性的身体质量指数(BMI)与抑郁症呈负相关。结论:结果表明,抑郁症和家庭食品不安全的频率在参与者中很高。社会经济地位的改善以及随后妇女粮食安全的改善似乎可以对她们的心理健康产生积极影响。
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引用次数: 1
Development of New Predictive Equations to Estimate Basal Metabolic Rrates in Iranian Adults: A Study Protocol 发展新的预测方程来估计伊朗成年人的基础代谢率:一项研究方案
Pub Date : 2019-03-10 DOI: 10.29252/NFSR.6.2.1
B. Nikooyeh, T. Neyestani
Background and Objectives: Studies indicate over-estimation of basal metabolic rate (BMR) using common equations for the Asian people. The present study aims to develop new predictive equations for the Iranian people and to compare these equations with commonly used formulas. Materials and Methods: Total, 150healthy subjects aged 18-60 yrare invited to the Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute. Demographic data are gathered using a questionnaire. Then, anthropometric measures are taken and blood sampling is done for thyroid function tests. If the subject merits all the inclusion criteria, indirect calorimetry will be performed. The value of BMR will be predicted using common equations (Harris-Benedict, FAO/WHO/UNU, Miffilin). Differences between predicted (using equations) and measured (using indirect calorimetry) values are estimated. Correlations between the two sets of data is performed using Pearson or Spearman coefficients. Between-method agreement is checked using Bland-AltmanPlot. Accuracy of the predicted values using equations isconsidered as the proportion of participants whose calculated BMR is 90-110% of their measured BMR. Multiple regression analysis is employed to develop new predictive equations for the BMR based on the independent variables. Conclusions: Since facilities for the measurement of BMR may not be accessible in many clinical or research settings, BMR is usually estimated using predictive equations. However, several studies have reported inaccuracy of these equations for certain populations. Therefore, development of new population-specific predictive equations seems reasonable. These equations could hopefully reduce the energy estimation errors both in clinical nutritional interventions and community-based nutrition researches.
背景和目的:研究表明,在亚洲人群中,使用通用方程过高估计了基础代谢率(BMR)。本研究旨在为伊朗人民开发新的预测方程,并将这些方程与常用公式进行比较。材料与方法:邀请国家营养与食品技术研究所营养研究实验室共150名18-60岁的健康受试者。人口统计数据是通过问卷调查收集的。然后,采取人体测量和血液采样进行甲状腺功能测试。如果受试者符合所有纳入标准,将进行间接量热测定。将使用通用方程(Harris-Benedict,粮农组织/世卫组织/联合国大学,Miffilin)预测BMR的值。预测值(使用方程)和测量值(使用间接量热法)之间的差异被估计。两组数据之间的相关性使用Pearson或Spearman系数进行。使用Bland-AltmanPlot检查方法间一致性。使用方程的预测值的准确性被认为是计算BMR为其测量BMR的90-110%的参与者的比例。采用多元回归分析方法,建立了基于自变量的BMR预测方程。结论:由于在许多临床或研究环境中可能无法获得测量BMR的设备,因此通常使用预测方程来估计BMR。然而,一些研究报告了这些方程对某些人群的不准确性。因此,开发新的特定人群预测方程似乎是合理的。这些方程有望减少临床营养干预和社区营养研究中的能量估计误差。
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引用次数: 1
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Nutrition and Food Sciences Research
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