Assessment of the relationship between body mass index (BMI) and dental age

The aim of the study was to determine the rela-tionship between Body Mass Index (BMI) and accelerated dental development. The dental developmental ages of 100 children aged between 8 and 12 years were determined using the Demirjian method and panoramic radiographs. BMI status was determined for each subject on the basis of the system developed by the International Obesity Task Force. There was a significant direct relationship between dental development and BMI (P < 0.01). Obese children have a higher rate of dental development compared to normal children. CLINICAL RELEVANCE: This is an important variable to be considered when planning for dental and orthodontic treatments in obese children. Brief objectives statement: Overweight or obesity can accelerate dental development. Accelerated dental development in overweight children is important to be considered in pediatric dentistry and orthodontics.

Bone mineral density in Iranian patients: Effects of age, sex, and body mass index

Introduction: Osteoporosis is a multifactorial skeletal disease that is characterized by reduced bone mineral density (BMD). BMD values depend on several factors such as age, sex and age at menopause. The purpose of this study was to determine the prevalence and changes in bone mineral density in Iranian patients. Methods: Three hundred patients were selected through random sampling technique in 2009. BMD was assessed by Norland (Excell) technique at the lumbar and femoral neck. Weight and height were measured through standard methods. A thorough history was taken from each patient. The data was analyzed using SPSS software version 13.0. P-values less than 0.05 were considered statistically significant. Results: From among the 300 studied patients, 86.6% were female. their mean age was 52.7 years. Their average body mass index (BMI) was 28.14 kg/m2. Mean T-Score at lumbar spine and femoral neck was -1.07 ±1.19 and -1.75 ± 1.33 respectively. Mean BMD value at lumbar spine and femoral neck was 0.92 ± 0.19 and 0.77 ± 0.16 respectively. The prevalence of osteoporosis at lumbar spine and femoral neck was 33.7% and 16.7, respectively. There was a significant correlation between age, BMI and BMD values (P-Value Conclusion: This study shows that ageing and low BMI are risk factors associated with bone loss. it is recommended to measure BMD and implement prevention programs for high-risk people.

Eating Habits, Family Flexibility and the Body Mass Index (BMI) in Gifted Students

The aim of this research was to examine the effect of eating habits and family flexibility on the body mass index in gifted students of the eighth and ninth grade of high school. The research design of this study was descriptive-correlation. The statistical population of this research included all high school gifted students of the eighth and ninth grade. The sample consisted of 220 gifted students who were selected by random sampling method. The average age of these participants was 14.56 years old, SD 10.41. Average participants BMI was 31.25, SD 3.12. One hundred and fifteen (52.28%) of these students were females and one hundred and five (47.72%) were males. Family flexibility was measured by Shakeri flexibility scale, eating habits were measured through Coker and Roger Eating Habits Questionnaire and body mass index was tested by Omron digital device. Using SPSS software, the data were analyzed to calculate correlation and simultaneous regression. The results of correlation showed that in these students, concern with weight and dieting and total eating habits have significant relationship with BMI (P < 0.001). The result of simultaneous regression also showed that concern with weight and dieting and total eating habits could explain BMI in these students (P < 0.001) and family flexibility could not explain BMI in these students (P < 0.005). The results emphasize the more important role of eating habits than family flexibility on BMI in gifted students because of sensitive and higher level of intelligence and high peer competitions.

A comparison of elderly (20～65 yrs) life style with body mass index (BMI)25

Objective:compare the habits and features of obese (BMI>25) and normal (BMI<25) individuals and express a method to ameliorate the life styles using a cross-sectional experiment.Methods:A total of 220 randomly selected cases were divided into case group (n=110) and control group (n=100) according to the calculated BMI level.Samples with BMI>25 kg/m2 were assigned to the case (obsess) group and those with BMI ranging from 20 to 25 were assigned to control (normal) group.The Miller-Smith life style questionnaires consisting 20 questions each with 5 different answers were given to both groups.Data of the questionnaires were collected and analyzed using t-test and Chi-square with SPSS.Results:No significant differences were found among the two groups in terms of the mean age,gender,level of education,marital status,insurance,breakfast,lunch or dinner,fried meat,legumes,caffeinated beverages,the length of sleep during 24 h,cigarette smoking and losing job or spouse.However,in regards to use of vegetables,sausage,fried potatoes,enriched breads,low fat milk,low salt,candies and chocolates significant relations were found (P<0.05).Conclusion:The present study suggests one way to control obesity and prevent diseases is to ameliorate the life styles.There is a relation between health and stress and irregularity of meals,such as breakfast skipping,is associated with overweight and obesity in adolescence.

Effect of Body Mass Index on All-cause Mortality and Incidence of Cardiovascular Diseases─Report for Meta-Analysis of Prospective Studies on Optimal Cut-off Points of Body Mass Index in Chinese Adults

Objective To verify the optimal cut-off points for overweight and obesity in Chinese adults based on the relationship of baseline body mass index (BMI) to all-cause mortality, and incidence of cardiovascular diseases from pooled data of Chinese cohorts. Methods The prospective study data of existing cohort studies in China were collected, and the age-adjusted all-cause mortality stratified by BMI were estimated. The similar analysis was repeated after excluding deaths within the first three years of follow-up and after excluding smokers. The incidence of age-adjusted coronary heart disease (CHD) and stroke stratified by BMI were also analyzed. Multiple Cox regression coefficients of BMI for the incidence of CHD and stroke after controlling other risk factors were pooled utilizing the methods of weighting by inverse of variance to reveal whether BMI had independent effect and its strength on the incidence of CHD and stroke. Results The data of 4 cohorts including 76 227 persons, with 745 346 person-years of follow-up were collected and analyzed. The age-adjusted all-cause mortality stratified by BMI showed a U-shaped curve, even after excluding deaths within the first three years of follow-up and excluding smokers. Age-adjusted all-cause mortality increased when BMI was lower than 18.5 and higher than 28. The incidence of CHD and stroke, especially ishemic stroke increased with increasing BMI, this was consistent with parallel increasing of risk factors. Cox regression analysis showed that BMI was an independent risk factor for both CHD and stroke. Each amount of 2 kg/m2 increase in baseline BMI might cause 15.4%, 6.1% and 18.8 % increase in relative risk of CHD, total stroke and ischemic stroke. Reduction of BMI to under 24 might prevent the incidence of CHD by 11% and that of stroke by 15 % for men, and 22 % of both diseases for women. Conclusion BMI ≤18.5, 24-27.9 and ≥28 (kg/m2) is the appropriate cut-off points for underweight, overweight and obesity in Chinese adults.

Prediction of Abdominal Visceral Obesity From Body Mass Index,Waist Circumference and Waist-hip Ratio in Chinese Adults:Receiver Operating Characteristic Curves Analysis

To evaluate the sensitivity and specificity of body mass index (BMI), waist circumference (WC) and waist-to-hip ratio (WHR) measurements in diagnosing abdominal visceral obesity. Methods BMI, WC, and WHR were assessed in 690 Chinese adults (305 men and 385women) and compared with magnetic resonance imaging (MRI) measurements of abdominal visceral adipose tissue (VA). Receiver operating characteristic (ROC) curves were generated and used to determine the threshold point for each anthropometric parameter. Results 1) MRI showed that 61.7% of overweight/obese individuals (BMI≥25 kg/m2) and 14.2% of normal weight (BMI＜25kg/m2) individuals had abdominal visceral obesity (VA≥ 100 cm2). 2) VA was positively correlated with each anthropometric variable, of which WC showed the highest correlation (r=0.73-0.77,P＜0.001 ). 3) The best cut-off points for assessing abdominal visceral obesity were as followed: BMI of 26 kg/m2, WC of 90 cm, and WHR of 0.93, with WC being the most sensitive and specific factor. 4)Among subjects with BMI≥28 kg/m2 or WC≥95 cm, 95% of men and 90% of women appeared to have abdominal visceral obesity. Conclusion Measurements of BMI, WC, and WHR can be used in the prediction of abdominal visceral obesity, of which WC was the one with better accuracy.

Body mass index is not associated with sperm-zona pellucida binding ability in subfertile males

生活方式因素，可以影响男富饶例如重量和营养的地位，包括精子授精能力。这回顾的研究的目的是评估在身体团索引(BMI ) 和根据带绑定(ZB ) 估计的精子带 pellucida 绑定能力之间的协会测试，它被描述了是为预言的一个相关诊断工具在 vitro 授精(IVF ) 能力。从与主要自发或温和的男因素不孕诊断的夫妇的 306 个男病人被包括。在根据 ZB，测试索引的 BMI 和精液参数之间的关联被估计，和越过 BMI 范畴的阳性、否定的测试的频率。在这张选择人口， BMI 不与根据精子的能力估计绑在带 pellucida 的常规精液参数或精子质量有关。在男肥胖的情况下的 IVF 过程的以前描述的差的结果能由于另外的精子缺点，例如精子 capacitation 或 acrosome 反应的改变。在男 BMI 和生物结果之间的连接例如授精率，应该进一步在 IVF 过程期间被评估。

Comparison of Various Foods Intakes and Their Relationships with Body Mass Index in Japanese Old Men and Women

Objective: Obesity is an important health problem, leading to many metabolic diseases such as type2 diabetes mellitus, cardiovascular diseases, cancer etc. There are many diet proposals to combat obesity. Since obesity is relatively rare in Japan, we wanted to know what kinds of foods influence body mass index (BMI) in old Japanese people. Methods: Healthy participants were given self-administered diet history questionnaires and described answers on each item by recollection of diets they took (7 days dietary recall). We used a brief-type self-administered diet history questionnaire (BDHQ) by using which the Japanese Ministry of Health, Labour and Welfare reports national Nutrition Surveys. From these questionnaires, we calculated the intakes of energy, carbohydrate, fat, protein or other foods. Results: Men take more alcohol, salt fruit, beans, and eggs than women. Intakes of major foods such as carbohydrate, lipid, and protein did not influence BMI in men and women. Conclusion: Within the range of foods intakes in Japan, no restriction of any food such as carbohydrate is not necessary for staying lean.

Body Mass Index and Hypertension Hemodynamic Subtypes in Yi Farmers and Migrants

Objective To examine the relationship between overweight or obesity and the risk of the various hypertension hemodynamic subtypes in Yi farmers and migrants.Methods A cross-sectional study of 2 358 Yi farmers and 1 392 Yi migrants was carried out in the Liangshan Yi autonomous prefecture,Sichuan,China in 2007.Results The standardized prevalence of overweight in female Yi farmers (6.22%) was higher than in males (3.15%),whereas in Yi migrants 31.56% of males and 18.78% of females were overweight.The standardized prevalence of obesity was 0 and 0.61% in male and female Yi farmers,compared to 3.91% and 5.57% in male and female Yi migrants,respectively.For both genders the standardized prevalence of ISH,IDH,and SDH was higher in Yi migrants than Yi farmers.Overweight and obese Yi men and women had a higher risk for IDH and SDH (P<0.001) than non-overweight/obese individuals.However,an association of overweight or obesity with ISH was observed only in men.Conclusion Yi migrants have substantially higher proportion of overweight and obese individuals,as well as individuals affected by ISH,IDH,and SDH,than do Yi farmers.Overweight and obesity are significant risk factors for the development of hypertension in Yi people.

Longitudinal changes in body weight of breastfeeding mothers in the first year after delivery and its relationship with human milk composition:a combined longitudinal and cross-sectional cohort study

Objective:Postpartum weight retention(PPWR)is a common problem among women after childbirth.The main objectives of this study are to understand the changes in body weight of breastfeeding mothers during long-term follow-up and preliminarily explore the relationship between maternal body weight and human milk composition,including macronutrients,leptin,and adiponectin.Methods:The study included a longitudinal cohort(122 mothers),and a cross-sectional cohort(37 mothers).The human milk,maternal weight,and dietary surveys were collected in the longitudinal cohort at different follow-up time points(1-14 days postpartum,2-4 months postpartum,5-7 months postpartum,and 12-17 months postpartum).The maternal body weight was analyzed using the responses in the survey questionnaires.A milk analyzer based on the mid-infrared spectroscopy(MIRS)was used to determine milk composition,and nutrition analysis software evaluated dietary intakes.In the cross-sectional cohort,participating mothers were asked to provide blood and human milk samples and pertinent information related to maternal body composition.Maternal body composition was measured by bioelectrical impedance analysis(BIA),while ELISA analyzed leptin and adiponectin in milk and serum.Results:At 5-7 months postpartum,the PPWR of breastfeeding mothers was(2.46±3.59)kg.At 12-17 months postpartum,the PPWR was(0.98±4.06)kg.PPWR was found to be negatively correlated with milk fat content within 14 days postpartum and positively correlated at 2-4 months postpartum.In addition,the maternal weight and body muscle mass were positively correlated with leptin and adiponectin in milk.Plasma leptin was positively correlated with the mother’s body weight,body mass index(BMI),FAT percentage,and body fat mass,while plasma adiponectin did not correlate with any parameter.The results also indicate that the PPWR did not correlate with leptin and adiponectin in plasma or milk.Conclusions:Breastfeeding mothers may retain considerable weight gain one year after delivery.Human milk composition may be related to changes in maternal body weight.Leptin and adiponectin in breast milk and leptin in plasma are associated with the maternal body composition.This study supports the notion that maternal nutritional status may affect offspring health through lactation,and future research should focus on exploring weight management of postpartum mothers.

融合人脸图像深度和外观特征的BMI估计方法

身体质量指数(BMI)是人类健康重要指标。从2D正脸图像中估计3D人脸信息并提出一个端到端BMI估计框架,以进一步提高BMI估计性能。首先,计算人脸468个3D关键点,并根据关键点相对头部质心的深度绘制深度人脸图;其次,提取人脸图像的方向梯度直方图(HOG)并可视化以表示外观特征;最后,利用卷积神经网络(CNN)VGGNet、ResNet分别对深度人脸图和HOG进行特征提取,并使用Hadamard积融合2个骨干网络的特征以估计BMI。与目前已有方法的对比实验中,本文提出方法在2个公开数据集上的整体平均绝对误差(MAE)分别比最优结果低0.38和1。上述实验结果证明了本文提出的融合3D人脸图像深度和外观特征的BMI估计方法的有效性。

Prognostic value of body mass index before treatment for laryngeal squamous cell carcinoma

Objective: Patients with head and neck cancer often suffer from malnutrition. This study aims to investigate the influence of body mass index(BMI) on the prognosis of laryngeal squamous cell carcinoma(LSCC).Methods: A total of 473 patients with LSCC initially treated at Sun Yat-sen University Cancer Center between January 2005 and July 2009 were retrospectively reviewed. Survival analysis was performed by the Kaplan-Meier method and Cox regression model.Results: Low BMI before treatment was significantly associated with poor overall survival in patients with LSCC(P<0.001). BMI was an independent prognostic factor for patients with LSCC.Conclusion: Leanness before treatment was associated with poor prognosis in patients with LSCC. Good nutritional status is favorable to improve survival in patients with LSCC.

绝经后女性不同部位骨密度及FRAX预测值与BMI的相关性分析

目的:探讨绝经后女性不同部位骨密度(BMD)及骨折风险评估工具(FRAX)计算出的骨折风险与体质量指数(BMI)的相关性。方法:选取2020年9月至2021年8月于蚌埠医科大学第一附属医院就诊并进行BMD检查的绝经后女性313例,收集研究对象的人口统计学资料及BMD相关信息,并应用FRAX工具计算未来10年发生主要骨质疏松性骨折(脊椎、前臂、髋骨或肩部骨折)的概率(PMOF)和髋部骨折的概率(PHF),分析FRAX预测值与BMD和BMI的相关性,以及联合股骨颈T值的FRAX预测值和不联合股骨颈T值的FRAX预测值是否有差异。结果:腰椎、股骨颈、全髋的BMD随着BMI的增加而增加(P<0.01);FRAX预测值在联合股骨颈T值的情况下,随着BMI的增加,骨折风险逐渐下降(P<0.01);未联合股骨颈T值的FRAX预测值在BMI<28 kg/m^(2)时,随着BMI的增加,骨折风险逐渐下降(P<0.05),当BMI≥28 kg/m^(2)时,骨折风险开始出现上升趋势(P<0.05);在骨量减少人群中,难以筛选出骨折高危人群,FRAX严重低估了发生主要骨质疏松性骨折的风险。结论:体质量过低的人群BMD通常较低,使用FRAX评估其发生骨折的风险相对较高。

Perceptions of Body Mass Index as a Valid Indicator of Weight Status among Adults in the United States

Background: Being overweight or obese increases risk for heart disease, stroke, type 2 diabetes, joint disease, and certain cancers. The Body Mass Index (BMI) is commonly used to determine weight status. As rates of overweight and obesity have risen sharply in the United States over the past 30 years, perceptions of a “normal” or healthy weight are subject to change. The purpose of this study was to analyze perceptions of BMI as an indicator of weight status. Methods: An online survey was administered to 376 US adults. The survey collected demographic information including height, weight, and perceived weight status (underweight, healthy weight, overweight and obese). The survey software calculated and presented participants with their personal BMI values. Participants then answered questions about their perception of the BMI as a valid indicator of weight status. Results: More participants reported a healthy weight status (51.6%) than were classified as such according to their computed BMI (43.6%). The majority of the sample (85.1%) considered BMI to be a valid indicator of weight status, although perceptions of validity varied by weight status. Participants that perceived BMI to be invalid most commonly cited incongruence with one’s perception of their own body weight, no accounting for unique body shapes, and no accounting for additional muscle mass. Conclusion: BMI is generally perceived to be a valid indicator of weight status. These perceptions of validity can vary depending on the individuals’ actual weight status. In instances where perceptions are not favorable toward BMI, it is largely attributable to opinions of incongruence with BMI and body shape, type, or composition. Continued use of BMI as a preliminary tool for determining weight status appears to be accepted. Efforts to increase BMI-related awareness and education may be necessary for individuals that currently see it as invalid.

驾驶员BMI对肌肉疲劳度的影响研究

目的探究在相同驾驶条件下,个体BMI差异对驾驶员肌肉疲劳累积的影响。方法采用对照试验对驾驶员不同BMI与腰背肌肉疲劳之间的关系进行研究。12名被试以标准驾驶姿势进行时长60 min的模拟驾驶,采集被试驾驶期间腰背部竖脊肌及背阔肌表面肌电信号MPF。试验从主观测评、客观数据两个维度入手,分析各被试BMI与表面肌电信号之间的关系,从而判断长时间驾驶状态下,驾驶员不同BMI对腰背部肌肉疲劳度是否具有显著性影响。结果两组肌肉MPF值与驾驶时间均呈现显著性负相关。3组不同被试组间背阔肌、竖脊肌MPF值存在显著性差异。两组肌肉MPF趋势变化图均表明BMI值越大,MPF值越早出现下降趋势,且竖脊肌MPF值波动明显>背阔肌。结论驾驶员BMI值越大,肌肉越早出现疲劳,且腰部竖脊肌比背部背阔肌更容易出现疲劳现象。研究结果可为驾驶疲劳个体差异问题研究、驾驶座椅设计及驾驶疲劳检测因素研究提供一定参考。

TyG-BMI对非酒精性脂肪性肝病的预测价值分析

目的观察甘油三酯葡萄糖指数(triglyceride-glucose index,TyG)、体质量指数(body mass index,BMI)和复合指标TyG-BMI与非酒精性脂肪性肝病(nonalcoholic fatty liver disease,NAFLD)发病的相关性,比较3个指标对NAFLD的预测价值。方法选取2021年1月~2022年2月于长沙市第四医院诊断为NAFLD患者131例(NAFLD组)及同期来院接受健康体检且身体健康,B超等未检测出脂肪肝的250名成年人作为研究对象(健康对照组)。比较NAFLD组与健康对照组的肝功能、血脂、空腹血糖、TyG指数、TyG-BMI等指标。TyG指数、BMI、TyG-BMI按照四分位数分为4组(Q1~Q4),观察各组NAFLD患病率。使用受试者工作特征曲线评价3个指标对NAFLD的诊断价值。结果NAFLD组TC、TG、LDL-C、ALT、FPG、BMI、TyG指数、TyG-BMI高于健康对照组,HDL-C低于健康对照组,差异有统计学意义(P<0.05)。随着TyG指数、BMI、TyG-BMI的升高,NAFLD患病率亦升高。3个指标Q4、Q3四分位组的NAFLD患病率均高于Q1四分位组,Q4四分位组患病率均高于Q2四分位组;TyG指数和TyG-BMI的Q4四分位组患病率高于Q3四分位组;BMI和TyG-BMI的Q2四分位组患病率高于Q1四分位组;TyG-BMI Q3四分位组的NAFLD患病率高于Q2四分位组,差异均有统计学意义(P<0.05)。TyG指数、BMI、TyG-BMI的ROC曲线下面积分别为0.732、0.698、0.796,TyG-BMI对NAFLD的预测价值高于TyG指数和BMI。结论TyG指数、BMI、TyG-BMI升高均与NAFLD发生风险升高相关,与TyG指数、BMI相比,TyG-BMI对NAFLD的预测价值更高。

不同年龄儿童BMI指数及贫血与龋齿的相互作用研究

目的探讨不同年龄儿童BMI指数及贫血与龋齿的相互作用。方法前瞻性选取2019年8月至2022年8月进行口腔检查的150例学龄前儿童作为调查对象,收集其临床资料,测量所有研究对象的体重、身高,并对其血红蛋白水平进行检测,采用speraman相关性分析法分析龋齿数与儿童各生育指标的相关性。根据儿童是否患有龋齿分为龋齿组(n=63)和无龋齿组(n=87),通过单因素和多因素分析方法分析儿童BMI及贫血与龋齿的相互作用。结果共150例学龄前儿童总龋齿率为42.00%,其中4~5岁儿童的龋齿率为56.45%、3~4岁为35.00%、2~3岁为25.00%,组间对比,4~5岁儿童的龋齿率较其他年龄组明显偏高(P<0.05)。各年龄段患儿的BMI、血红蛋白水平比较,差异均无统计学意义(P>0.05)。不同BMI组儿童的dmft指数、dmft+DMFT指数比较差异有统计学意义(P<0.05),其中肥胖组儿童的dmft指数、dmft+DMFT指数最低。Spearman相关性分析结果显示,BMI与dmft指数、dmft+DMFT指数呈负相关(R=-0.063、-0.520,P<0.05)。根据儿童的血红蛋白水平差异对其进行分组,其中正常76例,贫血64例。血红蛋白水平正常组儿童的dmft指数、dmft+DMFT指数均明显低于贫血组儿童(P<0.05)。Spearman相关性分析结果显示,血红蛋白与dmft指数、dmft+DMFT指数呈正相关(R=0.454、0.865,P<0.001)。Logstic回归分析结果显示,儿童偏瘦、贫血及家庭年收入≤3万元是影响其罹患龋齿的独立危险因素(P<0.05)。结论BMI偏低和发生贫血会明显增加学龄前儿童发生龋齿的风险,而龋齿的发生则会进一步阻碍幼儿的正常发育,提示应注意定期进行口腔检查。

老年人群体质量指数与慢性代谢性疾病的关系

目的·评估老年人群体质量指数(body mass index,BMI)与慢性代谢性疾病发生风险的关系。方法·以2014—2021年在上海交通大学医学院附属仁济医院体检中心进行体检的老年人(≥60岁)为研究对象。收集其各项生化指标。由经过培训的护士测量其身高、体质量和血压。采用问卷法收集研究对象既往慢性代谢性疾病史。收缩压≥140 mmHg(1 mmHg=0.133 kPa)、舒张压≥90 mmHg或既往有高血压病史,定义为高血压。空腹血糖≥7.0 mmol/L或既往有糖尿病病史,定义为糖尿病。总胆固醇≥6.2 mmol/L、三酰甘油≥2.3 mmol/L或既往有脂代谢异常病史,定义为脂质代谢紊乱。BMI与高血压、糖尿病和脂质代谢紊乱之间的关系采用受试者操作特征(receiver operator characteristic,ROC)曲线和二元Logistic回归进行分析评估。结果·共收集59083例研究对象的资料,其中男性30807例,女性28276例,平均年龄(67.9±6.3)岁。高血压、糖尿病和脂质代谢紊乱的发生率分别为76.5%(45219/59083)、24.1%(14225/59083)和50.0%(29544/59083)。与60~74岁的老年人群相比,75岁及以上的老年人患高血压和糖尿病的比例更高,患脂质代谢紊乱和无代谢异常的比例更低。通过ROC曲线分析,BMI对于高血压、糖尿病和脂质代谢紊乱的切点值分别为24.3、23.9和23.9 kg/m^(2)。老年男性高血压和糖尿病的BMI切点值和老年女性十分接近(高血压BMI切点值:老年男性24.3 kg/m^(2)vs老年女性24.2 kg/m^(2);糖尿病BMI切点值:老年男性24.0 kg/m^(2)vs老年女性23.7 kg/m^(2)),但老年男性脂质代谢紊乱的BMI切点值明显高于老年女性(老年男性24.0 kg/m^(2)vs老年女性22.5 kg/m^(2))。60~74岁老年人的BMI对慢性代谢性疾病的切点值(24.2~24.7 kg/m^(2))高于75岁及以上的老年人(22.9~23.8 kg/m^(2))。结论·60~74岁老年人群应将BMI控制在24.0 kg/m^(2)以下,而75岁及以上老年人群应将BMI控制在23.0 kg/m^(2)以下,则有利于降低其慢性代谢性疾病的风险。

性别与BMI对儿童动态足底压力分布的影响

目的通过比较肥胖儿童和正常儿童男女平地自然行走时的足底压力分布参数以及考察体重指数(body mass index,BMI)与各参数的相关性,探讨性别和BMI对儿童动态足底压力分布的影响。方法采用0.5m foot-scanUSB平板测试系统(RSscan International公司,比利时)对79名儿童自然行走时的步态进行测试,数据采用SPSS16.0进行统计处理。结果 (1)对于肥胖儿童和正常儿童,男女之间大部分的足底压力参数均没有显著性差异;(2)正常男女儿童足中部与地面冲量的百分比以及在M5、MF和HL等区域的压强峰值出现时间存在显著性差异;(3)BMI与足支撑分期、足中部与地面冲量百分比、T2-5压强峰值、HM和HL压强峰值出现时间无显著相关性;(4)BMI与其余足底压力分布参数均有良好相关性。结论 (1)性别对肥胖儿童动态足底压力分布没有显著影响,但正常儿童部分动态足底压力分布参数受性别的影响;(2)BMI大的儿童行走的稳定性差,行走效率低;(3)BMI大的儿童行走易疲劳,易引起踝关节等部位损伤。

上海市城乡60～69岁老年人BMI调查分析

采用随机整群取样的方法 ,对上海市 2 0个区、县 ,年龄在 6 0～ 6 9岁 (男女 )的 30 2 9名居民的体质现状进行调查。结果表明 ,上海市男子BMI(体重指数 )平均为 2 3 5 ,女子平均为 2 4 5 ;其中城市男、女BMI分别显著高于乡村同性别男、女 (P <0 0 5 ) ;BMI作为反映身体充实度和肥胖度的指标与血压、体脂率、皮脂厚度等有密切关系 ,提示BMI对于评定体质、预防和诊断心脑血管疾病有重要意义。