摘要
目的通过比较肥胖儿童和正常儿童平地自然行走时的足底压力参数,探讨肥胖对7～11岁儿童动态足底压力带来的影响。方法采用0.5m footscan USB平板测试系统(比利时RSscan International公司)对40名7～11岁儿童(肥胖儿童和正常儿童各20名)自然行走时的步态进行测试,数据采用SPSS11.5和EXCEL进行统计处理。结果与正常儿童相比,肥胖儿童自然行走过程中:(1)足支撑阶段显著增长,足蹬伸阶段缩短;(2)跖骨4(M4)和跖骨5(M5)与地面接触的压强峰值和压强峰值出现时间显著增大,且第2趾(T2)～第5趾(T5)以及足中部压强峰值都增大;(3)足弓指数(AI)及足中部和足后部与地面接触的冲量百分比均显著增大;(4)左足在足跟着地阶段、右足在支撑阶段和蹬伸阶段内翻程度增大;另外,肥胖儿童左右足外翻程度明显不同;(5)足轴角明显增大。结论与正常儿童相比:(1)肥胖儿童行走的稳定性较差;(2)肥胖儿童有前脚掌、踝关节和膝关节损伤的趋势;(3)肥胖儿童行走效率较低,易患扁平足;(4)肥胖儿童更容易以八字脚姿态行走。
Objective To compare the parameters of plantar pressures between the obese children and normal children during walking on the flat ground at normal speed,and to discuss the effect of obesity on dynamic plantar pressures for 7-11 years obese children. Method There were 40 volunteer subjects,twenty obese children and twenty normal children between 7 and 11 years of age in this study. Subjects were asked to walk at their own paces on a 10 m walkway with a 0.5 m footscan plate （footscan from RSscan International,Olen,Belgium） Sampling at 300 Hz. Data were processed statistically by SPSS11.5 and EXCEL. Results Compared to the normal children：1.the obese children have the longer foot support duration and shorter push-off duration; 2.the peak plantar pressures are larger and appearing time is longer of Metatarsal 4 （M4） and Metatarsal 5 （M5）,the peak plantar pressures of Toe 2 （T2） to Toe 5 （T5） on obese children group are higher. 3. AI （arch index） and impulse percentage of mid-foot and heel of obese children group are much larger. 4. Supination extent of the left foot in heel strike phase,supination extent of the right foot in foot-support phase and in push-off phase on obese children group are also larger. In addition,significant difference in pronation extent appeared between left and right foot in obese children group. 5. The footaxis angle of obese children group is obviously larger. ConclusionsCompared to the normal children：1. the walking stability of obese children group in this study is weaker. 2. Obese children are vulnerable to injure their foot foresole,ankle joint and knee joint. 3. Obese children endure flat foot more easily. 4. Obese children walk more frequently with outward splayfoot.
出处
《医用生物力学》
EI
CAS
CSCD
2010年第2期118-123,共6页
Journal of Medical Biomechanics
基金
北京市教育委员会面上项目(KM200810025019)
关键词
肥胖
7-11岁儿童
动态足底压力分布
自然行走
步态
Obese
7-11years children
Dynamic plantar pressures distribution
Normal walking
Gait
