体质量指数和腰围与肥胖儿童心血管危险因素关系的研究

目的 探讨体质量指数(BMI)、腰围与肥胖儿童心血管危险因素的关系.方法 回顾性分析2001年1月至2005年12月在上海交通大学医学院附属仁济医院肥胖病专科门诊就诊的6～18(11.8±3.0)岁患儿283例,其中男179例(11.4±3.0)岁,女104例(12.3±3.0)岁,测体重、身高、腰围、臀围、血压、血清总三酰甘油(甘油三酯,TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C),并计算BMI和腰臀比.结果 283例患儿血脂水平异常147例(51.9%),其中1项指标异常100例,2项异常34例,3项异常和4项全部异常为11例和2例.131例患儿TG升高,42例TC升高,HDL-C降低和LDL-C升高分别为20例和17例.283例患儿中高血压131例(46.3%),收缩压(SP)增高112例,舒张压(DP)增高88例,69例两者均增高.校正年龄和性别后,BMI与血清TG水平正相关(r=0.13,P<0.05).腰围不仅与血清TG水平呈正相关(r=0.21,P<0.01),还与血清HDL-C负相关(r=-0.14,P<0.05).腰围与血脂紊乱程度也呈正相关,而BMI则无类似关系.BMI和腰围均与SP、DP呈正相关.腰围异常患儿SP、DP和血清TG明显增高,而HDL-C明显降低.高血压组儿童腰围、血清Tc、LDL-C水平明显高于血压正常组儿童.结论 肥胖儿童易并发脂质代谢紊乱和高血压等心血管危险因素.BMI和腰围与肥胖儿童心血管危险因素关系密切.不同年龄、性别,腰围第95百分位值可作为腰围正常与否的临界点.     

天津市7123名学龄期儿童腰围、臀围及相关指标特征分析

目的 了解天津市学龄期儿童腰围、臀围、腰臀比(WHR)水平及年龄、性别特征,分析其与身高、体质量及体质量指数(BMI)的关系,并探讨腰围与三酰甘油(TG)、胆固醇(TC)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)及尿酸(UA)的关系.方法 测量7123名天津市学龄期儿童的身高、体质量、腰围、臀围,计算其WHR、BMI,记录各个年龄组男童和女童的腰围、臀围和WHR,通过两组独立样本资料的t检验分析各年龄组腰围、臀围和WHR的性别差异,并对各指标进行相关性分析.其中1 811名留取静脉血行TG、TC、HDL、LDL、UA检测.结果 儿童的腰围和臀围均随年龄的增长而增长,且男童大于女童(Pa<0.05);男童WHR无明显变化,女童WHR随年龄增长而呈下降趋势,各年龄组男童大于女童(Pa<0.05);BMI均随年龄的增长而增长,各年龄组男童大于女童(Pa<0.05);腰围和臀围分别与年龄、身高和体质量呈正相关,WHR与体质量呈正相关(男童r=0.419,P<0.05;女童r=0 241,Pa<0.05),BMI与年龄、身高和体质量均呈正相关.腰围与TG、TC、LDL、UA呈正相关(r=0.076、0.098、0.137、0.401,Pa<0 05),与HDL呈负相关(r=-0.319,P<0.05).结论 天津市学龄期儿童腰围、臀围和BMI均与身高、体质量有关,WHR与体质量有关,腰围与TG、TC、HDL、LDL、UA有关.腰围及相关指标可作为儿童肥胖及相关疾病的预测指标.     

肥胖儿童及青少年脂代谢紊乱与早期血管病变的关系

目的 了解肥胖儿童青少年的脂代谢紊乱、血压与血管内膜中层厚度(IMT)变化.方法 2008年1月-2009年9月,从浙江省3家医院共募集580例7～17岁肥胖儿童青少年,按照血脂水平分为2组:血脂正常组中,男100例、女52例,平均年龄10.47岁;血脂紊乱组中,男305例、女123例,平均年龄10.83岁.分别进行相关体格检查,计算体质指数(BMI),检测血脂、血糖、血胰岛素和肝酶等生化指标,并对其中1家医院的285例研究对象进行颈动脉IMT检测.结果 (1)血脂正常组与血脂紊乱组患儿中,高血压比例分别是12.5%(19/152)和20.1%(86/428),差异具有统计学意义(x2=4.362,P=0.037),比值比为1.760,95%可信区间为1.030～3.008.(2)血脂紊乱组的左、右颈总动脉IMT和颈总动脉平均IMT值均较血脂正常组偏高,但差异均无统计学意义(均P>0.05).血脂紊乱组的左、右颈内动脉IMT和颈内动脉平均IMT值分别是(0.66±0.15)mm、(0.65±0.15)mm和(0.65±0.15)mm,正常血脂组三者水平分别为(0.62±0.13)mm、(0.60±0.13)mm和(0.61±0.12)mm,组间差异均有统计学意义(均P<0.05).(3)双变量相关分析显示收缩压与年龄、BMI、BMI Z值、腰围、臀围、尿酸、丙氨酸转氨酶、甘油三酯、空腹胰岛素和稳态胰岛素抵抗指数呈正相关(均P<0.05);其中收缩压与臀围中度相关.颈总动脉和颈内动脉平均IMT也分别与年龄、BMI、腰围、臀围和TG呈正相关(均P<0.05).多元线性回归分析显示臀围和稳态模型胰岛素抵抗指数是收缩压的独立相关因素,腰围是颈总动脉和颈内动脉平均IMT的独立相关因素,甘油三酯还是颈内动脉平均IMT的独立相关因素.结论 (1)肥胖儿童青少年存在血脂代谢紊乱、高血压和动脉内膜增厚等血管病变,(2)脂代谢紊乱与血管病变密切相关,其中腰围和高甘油三酯血症是血管病变的高危因素.     

儿童代谢综合征尿酸变化及其与心血管危险因素的关系

目的 探讨肥胖代谢综合征儿童血清尿酸(SUA)水平与心血管疾病危险因素之间的相关性.方法 肥胖儿童157例,代谢综合征(MS)77例,非代谢综合征(非MS)80例.分析两组患儿人体测量参数、血尿酸、血脂、血糖及胰岛素等指标间差异,观察SUA与人体测量参数、血压、糖脂代谢紊乱的相关性,并对影响SUA水平的指标进行多元逐步回归分析.结果 MS组血尿酸、腰围、血压、三酰甘油(TG)均高于非MS组,高密度脂蛋白胆固醇(HDL-C)低于非MS组(P<0.05).Spearman相关分析提示SUA水平与体质指数、腰围、腰围身高比、舒张压、收缩压、空腹胰岛素水平、胰岛素抵抗指数(HOMA-IR)、TG及患儿已表现出的MS组分个数呈正相关(P<0.05);与HOMA-IS及HDL-C呈负相关(P<0.05).结论 MS儿童除血压、血脂、血糖异常,也伴有嘌呤代谢紊乱.腰围、TC、舒张压、HDL-C为SUA水平的重要影响指标.高尿酸血症与中心性肥胖、高血压、高血脂关系密切.SUA水平增高可能成为心血管疾病的一个重要的危险因素,参与心血管相关疾病的发生、发展过程.     

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目的调查四川省藏族儿童青少年肥胖指标体重指数(BMI)、腰围(WC)、腰臀比(WHR)、腰围身高比(WhtR)与血压、血脂,并对其相关性进行分析。方法采用多阶段、分层、整群随机抽样的方法,选取2007年10月调查的四川省阿坝自治州松潘县藏族儿童青少年818名资料完整者进行数据分析。测量计算BMI、WC、WHR、WhtR,并分别检测收缩压(SBP)、舒张压(DBP)、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL-C)以及低密度脂蛋白(LDL-C)的血清浓度,并进行相关性分析。结果女童超重肥胖率(12.78%)高于男童(3.30%),男童和女童超重肥胖组的血压、血脂与同性别BMI正常组相比差异有统计学意义。对血压、血脂与年龄、肥胖指标进行不同性别单因素相关性分析显示,男童和女童的BMI和WC均与SBP、DBP呈正相关。血脂四项与肥胖指标有不同程度的相关性。结论四川省藏族儿童青少年的BMI、WC、WHR、WhtR和血压、血脂存在不同程度的性别、年龄差异,尤其体现在16～17岁年龄组。监测儿童青少年期的BMI、WC和WhtR对于血压和血脂的控制和维持具有重要意义。     

人体测量指标与儿童血压的相关性研究

目的调查分析人体测量指标对儿童血压的影响。方法随机抽样检查郑州地区6 790名6~13岁儿童,测量体质指数(BMI)、腰围(WC)、臀围(HC)、血压,计算腰围/臀围比(WHR)及腰围/身高比(WHtR),采用SPSS16.0软件进行统计分析。结果儿童高血压检出率为5.57%。控制年龄因素后采用偏相关分析发现,男、女童的BMI、WC、HC、WHtR与收缩压和舒张压均呈显著正相关(P均0.05)。无论男女,高血压组的BMI、WC、HC、WHR和WHtR的水平均高于正常血压组,差异均有统计学意义(P均0.05)。共检出肥胖儿童280名(4.12%),超重622名(9.16%)。肥胖、超重及正常体质量组的高血压比例的差异有统计学意义(P0.01),肥胖组高血压比例高于超重及正常体质量组。肥胖、超重组的收缩压、舒张压水平均高于正常体质量组,差异均有统计学意义(P0.05)。结论郑州地区6~13岁儿童高血压患病率处于同年龄段儿童的中低等水平。BMI、WC、HC、WHtR与男、女童血压具有显著相关性,尤以HC较为显著。     

贵阳市7～17岁少年儿童体质指数分布及超重肥胖状况

目的 了解贵阳市少年儿童体质指数分布及超重、肥胖状况,为儿童营养健康教育提供依据.方法 采用整群随机抽样的方法抽取贵阳市7所中、小学7～17岁的8 616名学生为研究对象,测量身高、体重,计算出体质指数百分位数值.以国际生命科学会中国肥胖问题工作组(WGOC)颁布的"中国学龄儿童青少年超重、肥胖筛查体质量指数值分类标准",对贵阳市少年儿童超重、肥胖状况进行筛查.结果 与WGOC采用的以体质指数P85和P95作为超重和肥胖筛查标准相比,贵阳市男孩P85、P95值均有相对增高趋势,而女孩P85、P95值变化相对不明显;贵阳市少年儿童超重和肥胖总检出率为12.5%和6.8%,其中男孩分别为15.0%和8.4%,女孩分别为9.9%和5.2%,男孩超重、肥胖检出率均高于女孩(P均<0.01).结论 贵阳市超重肥胖儿童日益增多,应重视对儿童超重、肥胖的预防工作.     

有氧运动结合饮食控制对单纯性肥胖儿童的干预效果

目的：观察3周有氧运动结合饮食控制对单纯性肥胖儿童的干预效果。方法选择参加2012年和2013年我院举办减重夏令营的单纯性肥胖儿童60例,其中男28例,女32例,年龄8．5~14岁。干预方案主要包括有氧运动、饮食控制。比较干预前后肥胖儿童的身高、体重、体块指数( body mass index, BMI)、腰围、臀围、体脂比、血压、心率、血脂及血糖的变化。结果经过3周干预,体重[(64．97±17．89) kg]、腰围[(98．09±18．20) cm ]、臀围[(102．70±18．71) cm ]、BMI [(27．42±5．24) kg/m2]、体脂比[(39．49±9．38)%]较干预前均明显降低(P<0．05),而身高[(152．64±10．28)cm]则较干预前无明显变化(P>0．05);且干预后肥胖儿童的收缩压、舒张压、心率、血脂及血糖较干预前均显著下降(P 均<0．001)。结论通过短期的有氧运动及饮食控制能有效降低肥胖儿童的体重、腰围、臀围、BMI、体脂比,并改善脂肪及糖代谢,可预防和延缓肥胖儿童心血管疾病的发生和发展。     

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目的比较儿童青少年腰围与体重指数(BMI)在代谢综合征(MS)诊断中的实用价值。方法采用随机抽样的方法于2009年6月至2010年10月从南宁市14所中小学中抽取6～18岁儿童青少年7893人,分析腰围、BMI与MS各检测指标的相关性。以中华医学会糖尿病学分会(CDS)及国际糖尿病联盟(IDF)(2007)建议的MS标准应用受试者工作特征曲线(ROC),比较腰围及BMI的ROC曲线下面积,反映腰围及BMI诊断MS的准确性大小。结果 (1)除高密度脂蛋白胆固醇(HDL-C)均值随肥胖增加而降低外,MS的各检测指标均值比较[除外空腹血糖(FBG)和天冬氨酸转移酶(AST)]均为肥胖组>超重组>正常组,3组间差异有统计学意义(P<0.05)。(2)腰围、BMI均与臀围、腰臀比、收缩压(SBP)、舒张压(DBP)、FBG、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)呈正相关,与HDL-C呈负相关,其中腰围与FBG、TG、HDL-C、FINS、HOMA-IR的相关程度较BMI密切。(3)腰围检出MS各组分异常的灵敏性明显高于BMI,阳性预测值(除外HDL-C异常)均相对好于BMI。(4)腰围及BMI的ROC曲线下面积在CDS标准下分别为0.949和0.951;在IDF标准下分别为0.941和0.921。结论儿童青少年MS的诊断中,腰围较BMI更具诊断价值,腰围测量有助于儿童青少年MS的筛查。     

体格测量指标对肥胖儿童胰岛素抵抗的预测意义

目的分析体质量指数(BMI)、腰围、臀围、腰臀比(WHR)、脐旁皮褶厚度、颈部黑棘皮程度6项体格测量指标对胰岛素抵抗(IR)的预测意义,并计算出可用于临床检测的各个指标的切点。方法测量162例肥胖儿童身高、体质量、腰围、臀围,计算BMI(BMI=体质量/身高2)、WHR(WHR=腰围/臀围),并评价其颈部黑棘皮程度;测量其空腹血糖(FBG)及空腹胰岛素(FIN),通过稳态模型法(HOMA)计算IR指数(HOMA-IR)(HOMA-IR=FBG×FIN/22.5),评价胰岛素敏感性;通过ROC曲线下面积评价各项指标对IR的预测能力,并计算出相应指标的特异度及灵敏度,两者同时最大的点作为各项指标的切点。结果ROC曲线下面积(95%可信区间)、切点分别为:BMI0.778(0.684～0.872)、27.45,腰围0.800(0.718～0.883)、87.25cm,臀围0.72(0.612～0.828)、99.75cm,WHR0.698(0.601～0.796)、0.895,脐旁皮褶厚度0.781(0.684～0.878)、4.05cm,颈部黑棘皮程度0.752(0.646～0.858)、3度。结论BMI、腰围、...     

北京市学龄儿童腰围、腰围身高比分类标准对心血管代谢危险因素的筛查效度

摘要 目的 在心血管代谢危险因素单一患病率和聚集水平评估的基础上，验证和提出适合北京市学龄儿童人群腹型肥胖筛查的腰围和腰围身高比分类标准。方法 依据北京市儿童青少年代谢综合征研究的现况调查结果，笔者前期研究提出腰围的性别年龄别P80及腰围身高比0.46可作为初步筛查腹型肥胖的界值，但提出上述标准时，心血管危险因素相关指标中血脂、血糖水平是基于指末梢血的检测结果，因此有待于依据准确性更高的静脉血生化指标的检测结果进行验证。本研究从该项目调查人群中非随机选择3 525名6~18岁学龄儿童为研究对象，对其进行血压测量和静脉血生化指标检测，对儿童肥胖与脂肪肝研究中1 454名7~18岁学龄儿童，除上述检测项目外，行B超检查脂肪肝及肝功能生化检测，筛出非乙醇性脂肪肝儿童，在前期儿童腹型肥胖初筛界值的基础上，提出腰围和腰围身高比的备选分类标准，通过比较各备选标准检出心血管危险因素及其聚集的效率，对腰围、腰围身高比判定学龄儿童腹型肥胖的适宜界值做进一步的研究。结果 肥胖、高血压、血脂紊乱及其聚集的检出率均随腰围及腰围身高比的升高逐渐增加。通过比较不同腰围和腰围身高比备选界值检出上述危险因素及其聚集的灵敏度、特异度、阳性预测值及阴性预测值，发现腰围超过性别年龄别P85，腰围身高比>0.48时，上述危险因素均值及其异常检出率均明显升高，灵敏度和特异度均较高，与前期提出的标准比较，在兼顾阴性预测值的同时，阳性预测值有所提高。结论 学龄儿童腰围超过其性别年龄别P85或腰围身高比>0.48时，罹患心血管危险因素及其聚集的风险均明显增加，可作为学龄儿童人群腹型肥胖筛查的腰围和腰围身高比分类标准。     

Anthropometric correlates of lipoprotein profile and blood pressure in high BMI African American children

Objective: To explore the association of anthropometric indices with lipoprotein profile and blood pressure as risk factors of cardiovascular disease, in African American (AA) children. Methods: A cross‐sectional analysis was carried out on children aged 9–13 years with BMI >85th percentile. Height, weight, waist and hip circumferences, % body fat and blood pressure [systolic (sBP) and diastolic (dBP)] were measured. Fasting plasma levels of triglycerides (TG), total cholesterol (TC), high‐density lipoprotein cholesterol (HDL‐C), low‐density lipoprotein cholesterol (LDL‐C), intermediate density lipoprotein cholesterol (IDL‐C) and very low‐density lipoprotein cholesterol (VLDL‐C) were analysed. Results: After accounting for age, gender and pubertal status of the child, multiple linear regression models showed that waist circumference and BMIz were strong predictors for lipoprotein variables. In independent analysis, waist circumference and BMI z‐scores were found to be interdependently associated with TG, LDL‐C:HDL‐C ratio, VLDL‐C and sBPz. However, for HDL‐C, TG:HDL‐C ratio and dBPz, waist circumference was independently and more strongly associated with these risk factors than BMI. Conclusion: Waist circumference was a stronger predictor for lipoprotein variables and blood pressure in high BMI AA children than other anthropometric indices, and may be adequate as a screening test to identify children who are at increased risk for cardiovascular disease.     

Waist circumference and waist-to-height ratio in Norwegian children 4-18 years of age: reference values and cut-off levels

Aim: To establish reference values for waist circumference and waist‐to‐height ratio of Norwegian children. Material: Data were collected in 2003–2006 as part of a cross‐sectional study, including 5725 children 4–18 years of age. Reference curves were fitted with the LMS method; appropriate cut‐offs were selected using receiver operating characteristic analysis. Results: Reference values for waist circumference and waist‐to‐height ratio are presented. Mean waist circumference increased with age for both genders. Boys had a higher waist circumference at almost all ages. Mean waist‐to‐height ratio decreased until early adolescence and thereafter increased slightly towards adult age. There was a strong positive correlation between waist circumference and BMI (r = 0.907, p < 0.01) and a moderate positive correlation between waist‐to‐height ratio and BMI (r = 0.397 p < 0.01). A waist circumference cut‐off value of 1.0 SDS (85th percentile) gave a sensitivity of 79% and a specificity of 94% to detect overweight. A cut‐off value of 1.6 SDS (95th percentile) gave a sensitivity of 94% and a specificity of 96% to detect obesity. Conclusion: This study presents the first reference values of waist circumference and waist‐to‐height ratio for Norwegian children 4–18 years, which also represent the first reference in Scandinavian schoolchildren. The 85th and 95th percentiles of waist circumference are proposed as appropriate cut‐offs for central overweight and obesity.     

Waist circumference percentiles for 7- to 17-year-old Turkish children and adolescents

Abdominal obesity is associated with risk of cardiovascular disease and type 2 diabetes mellitus. Waist circumference as a measure of obesity may be clinically useful as a predictor of metabolic syndrome in children. To develop age- and sex-specific reference values for waist circumference we evaluated the data obtained from Turkish children and adolescents. Waist circumference measurements from 4,770 healthy schoolchildren were obtained. Smoothed percentile curves were produced by the LMS method. The median curves of Turkish children were compared with four other countries: Australia, the UK, USA (Bogalusa) and Japan. Smoothed percentile curves and values for the 3rd, 5th, 10th, 25th, 50th, 75th, 85th, 90th, 95th and 97th percentiles were calculated for boys and girls. We found that waist circumference increased with age both in boys and girls. The 50th percentile waist circumference curve of Turkish children was over the British and Japanese but lower than the Bogalusa children and adolescents. This study presents data and smoothed percentile curves for waist circumference of healthy Turkish children aged 7–17 years. The differences in waist circumference of different countries can be explained by lifestyles and cultural characteristics. These data can be added to the existing international reference values for waist circumference of children and adolescents.     

Can waist circumference identify children with the metabolic syndrome?

OBJECTIVE: To determine in children the association between waist circumference (WC) and insulin resistance determined by homeostasis modeling (HOMA-IR) and proinsulinemia and components of the metabolic syndrome, including lipid profile and blood pressure (BP). METHODS: Eighty-four students (40 boys) aged 6 to 13 years and matched for sex and age underwent anthropometric measurements; 40 were obese; 28, overweight; and 16, nonobese. Body mass index (BMI), WC, BP, and Tanner stage were determined. An oral glucose tolerance test, lipid profile, and insulin and proinsulin assays were performed. Children were classified as nonobese (BMI < 85th percentile), overweight (BMI, 85th-94th percentile), and obese (BMI > or = 95th percentile). RESULTS: There was univariate association (P < .01) between WC and height (r = 0.73), BMI (r = 0.96), Tanner stage (r = 0.67), age (r = 0.56), systolic BP (r = 0.64), diastolic BP (r = 0.61), high-density lipoprotein cholesterol level (r = 0.45), triglyceride level (r = 0.28), proinsulin level (r = 0.59), and HOMA-IR (r = 0.59). Multiple linear regression analysis using HOMA-IR as the dependent variable showed that WC (beta coefficient = 0.050 [95% confidence interval, 0.028 to 0.073]; P = .001) and systolic BP (beta coefficient = 0.033 [95% confidence interval, 0.004 to 0.062]; P = .004) were significant independent predictors for insulin resistance adjusted for diastolic BP, height, BMI, acanthosis nigricans, and high-density lipoprotein cholesterol level. CONCLUSION: Waist circumference is a predictor of insulin resistance syndrome in children and adolescents and could be included in clinical practice as a simple tool to help identify children at risk.     

Lipoprotein abnormalities are highly prevalent in pediatric heart transplant recipients

The role of hyperlipidemia in graft coronary artery disease (GCAD) is controversial although hyper-triglyceridemia is an independent risk factor. Recent studies show that 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) inhibitors decrease the incidence of GCAD in adults. The incidence of GCAD in pediatric patients is lower than in adults; it is not clear whether age-related differences in lipid metabolism account for some of this protection. This study was performed to: characterize the lipoprotein profile in children after heart transplantation; demonstrate that total cholesterol (TC) is a poor marker for underlying lipoprotein abnormalities; and to compare lipid abnormalities in patients who had been converted from cyclosporin A (CsA) to tacrolimus. Seventy-one determinations of fasting lipoprotein profiles were performed in a cohort of 28 children. Each child had at least two determinations on separate occasions. TC, low-density lipoprotein (LDL), and serum triglyceride (TG) levels were categorized as abnormal if greater than the 75th percentile for age and gender. A high-density lipoprotein (HDL) level less than the 25th percentile was considered abnormal. Immunosuppression included CsA or tacrolimus, azathioprine, and prednisone. We found that 90% of the patients studied had abnormalities of either TG or HDL. In contrast, LDL tended to be normal when adjusted for age and gender. TC was a poor indicator of any underlying abnormality in TG, LDL, or HDL. In patients converted to tacrolimus, no significant differences were found in the levels of TG, LDL or HDL compared with each patient's respective values while receiving CsA. Hence, lipoprotein abnormalities among pediatric heart transplant recipients are highly prevalent. TC is a poor screening tool in the evaluation for lipid abnormalities. Lipoprotein profiles remain statistically unchanged after conversion from CsA to tacrolimus.     

Serum lipid profile in obese children in China

BACKGROUND: The aim of the present study was to examine the serum lipid profile in obese Chinese children, their serum lipid and apolipoprotein A-I (apoA-I) and B (apoB) levels were examined. METHODS: The subjects were 153 patients (109 male and 44 female) aged 4-16 years with obesity, who attended the outpatient clinic of Beijing Children's Hospital. Percentage bodyweight (%BW) ([(bodyweight - standard weight)/standard weight]x 100) were obtained. Skinfold thickness and hip and waist circumference were measured. Percentage body fat (%BF) was estimated by bioelectrical impedance analyzer. Serum total cholesterol (TC), high density lipoprotein cholesterol (HDLC), triglyceride (TG), apoA-I and apoB levels were also measured. RESULTS: TC showed an acceptable level in 86.8% of obese children. The prevalence of high TC levels (3.3%) or high LDLC levels (6.0%) was rather low. The HDLC level was reduced in 31.3% of obese children. Anthropometric variables had no linear relationship to TC, HDLC, TG, LDLC, apoA-I or apoB, but in the older age group (over 10 years old) %BW and %BF showed a weak correlation with HDLC (r = -0.202, r = -0.211, respectively). CONCLUSION: In obese Chinese children, HDLC as well as TC levels should be examined in order to assess coronary risk.     

Association between school children's overweight and maternal obesity and perception of their children's weight status

AIM: To determine the association between overweight children and a) other components of the mothers' metabolic syndrome, such as body mass index (BMI), waist circumference (WC), HDL-cholesterol, triglycerides, glucose, HOMA-IR, blood pressure (BP), and age; and b) the mothers' perception of their children's overweight. METHODS: Six hundred and twenty children (297 M) aged 9 +/- 2 years and their mothers aged 37.7 +/- 7 years were examined between April and August 2006. BMI, BP, fasting glucose and lipids and children's Tanner stage were determined. Questionnaires were filled in about the mothers' perceptions of their children's eating habits and of their children's shape. RESULTS: Ninety-five (17.4%) of the children were obese (> 95th percentile), 108 (15.3%) overweight (> 85th percentile) and 418 (67.3%) normal. One hundred and twelve (18%) of the mothers were obese and 183 (29.5%) overweight. Mean values for measures in mothers differed between normal vs overweight/obese children: z-BMI (-0.19 vs 0.42), triglycerides (84 vs 105 mg/dl), cholesterol (147 vs 157 mg/dl), glucose (78 vs 82 mg/dl) and insulin resistance (HOMA-IR 1.34 vs 1.72). There were significant differences in the proportion with distorted perception of shape (2.2% vs 47.5%) and eating habits (11.2% vs 37%) between mothers of normal versus overweight/ obese children. Logistic regression analysis using BMI > or = 85th percentile as the dependent variable showed that the mothers' perceptions of their children's shape (OR: 18.84; 95% CI: 5.0-69.6), eating habits (OR: 3.82; 95% CI: 1.5-9.5) and mothers' BMI (OR: 2.1; 95% CI: 1.3-3.4) were associated with children's overweight. CONCLUSIONS: There was an association between mothers' distorted perception of their children's shape and eating habits and mothers' obesity and their children's overweight. This observation provides clues for obesity prevention programs.     

Obesity and lipid profiles in children and adolescents

Childhood obesity is associated with unfavorable lipid profile, suggesting that obese children should be screened for hypercholesterolemia. However, the prevalence of hypercholesterolemia in childhood obesity, and the effect of the degree of obesity on lipid profile, are unknown. Eighty-nine obese children and adolescents (BMI >85%, mean age 10.4 +/- 2.5 years) and 53 non-obese control children matched for age, gender and pubertal stage participated in the study. Early morning blood samples for serum lipids were collected in all children after a 12-h fast. Mean serum cholesterol and triglycerides (TG) levels were significantly higher (p <0.05) among the obese children (cholesterol: 175.2 +/- 31.4 vs 143.3 +/- 24.3 mg/dl; TG: 122.8 +/- 69.7 vs 94.3 +/- 37.8 mg/dl in obese and control children, respectively). Among the obese children, 52% had elevated serum cholesterol levels (>170 mg/dl) compared to 16% in the controls. The degree of obesity (BMI 85-95% vs BMI >95%) had no effect on serum lipids. Unfavorable lipid levels were relatively common among obese children, suggesting that obesity should be considered a risk factor for hypercholesterolemia, and that screening obese children for hypercholesterolemia should be considered.     

单纯性肥胖患儿非酒精性脂肪肝病与胰岛素抵抗

目的探讨单纯性肥胖(肥胖)儿童发生非酒精性脂肪肝病(NAFLD)的情况及与胰岛素抵抗(IR)、血脂、体质量指数(BMI)、腰臀比(WHR)的关系。方法选择肥胖儿童90例,年龄2.5～14.3岁。其中NAFLD 24例(NAFLD组),无NAFLD 66例(无NAFLD组)。另选35例年龄、性别与其相匹配的健康儿童为健康对照组。清晨空腹测量其体质量、身高、腰围和臀围,计算BMI和WHR,同时静脉采血检测其血清胰岛素(FINS)、糖(FBG)、胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)和ALT、AST等,计算稳态模型胰岛素抵抗指数(HOMA-IR=FINS×FBG/22.5),并做肝胆等部位超声检查。结果 NAFLD占肥胖儿童的26.67%;NAFLD组儿童BMI、WHR最高,其次为无NAFLD组,差异均有统计学意义(Pa<0.001);3组儿童FINS和HOMA-IR值差异均有统计学意义(Pa<0.001),NAFLD组最高,其次为无NAFLD组,均明显高于健康对照组,但FBG无明显差异;NAFLD组血清TG、LDL-C和TC水平明显高于无NAFLD组和健康对照组(Pa<0.01);HOMA-IR值与BMI、WHR、血TG、LDL-C呈正相关(r=0.402、0.256、0.239、0.180,P=0.000、0.004、0.008、0.046);BMI、WHR诊断NAFLD的受试者工作特征(ROC)曲线下面积分别为0.805和0.765(Pa=0.000)。结论肥胖儿童NAFLD的发生与IR,血TG、LDL-C、TC升高及BMI、WHR增高关系密切,BMI、WHR对儿童肥胖NAFLD具有一定的诊断价值。控制体质量,减少腰围,可减轻IR,阻止NAFLD的发生、发展。