性别与BMI对儿童动态足底压力分布的影响  

Effects of gender and BMI on dynamic plantar pressure distribution in children

作　　者：闫松华[1] 董灿[2] 杨进[1] 孙世杰[1] 刘志成[1] 

机构地区：[1]首都医科大学生物医学工程学院,北京100069 [2]中国人民解放军总医院301医院,北京100853

出　　处：《医用生物力学》2010年第5期363-368,共6页Journal of Medical Biomechanics

基　　金：北京市教育委员会面上项目(KM200810025019)

摘　　要：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。Objective To investigate the effects of gender and body mass index（BMI） on dynamic plantar pressure among children by comparing the plantar pressure parameters of obese boys and girls,as well as normal boys and girls when walking at preferred speed on flat ground and reviewing the relativity of children＇s BMI and these parameters.Method 79 children were enrolled in this research to make gait test when walking naturally,using a 0.5m footscan plate system（RSscan International,Belgium）.The results were statistically processed and analyzed by SPSS16.0.Results（1） There is no significant difference in mostly dynamic plantar pressure parameters between genders for both obese and normal children;（2） There is significant difference in the impulse percentage in mid foot and ground,and appearing time of pressure peak values of several areas including M5,MF and HL for normal children;（3） There is no significant correlation between BMI and foot support duration,impulse percentage between mid foot and ground,pressure peak value of T2-5,appearing time of pressure peak value of HM and HL;（4） BMI and the other plantar pressure distribution indicators are well correlated.Conclusions（1） There is no significant difference on dynamic plantar pressure distribution between genders for obese children,but there are effects of genders on partial dynamic plantar pressure distribution parameters for normal children;（2） Children with larger BMI are of worse walking stability and lower efficiency;（3） Children with larger BMI tend to feel fatigue in walking and get injured in ankle joints and other parts of the body more easily.

关 键 词：肥胖儿童 压力分布 体重指数 步态分析 运动学 

分 类 号：R3[医药卫生—基础医学]