论文部分内容阅读
目的通过比较小学阶段超重/肥胖儿童和正常儿童平地行走时的运动学参数,探讨超重/肥胖对儿童步态的影响。方法选取40名超重/肥胖儿童(年龄(9.6±1.72)岁;身高(142.16±12.19)cm;身体质量指数(BMI)(24.32±2.96)kg/m2)和50名正常体重儿童(年龄(10.26±0.72)岁;身高(139.0±7.50)cm;BMI(17.08±1.25)kg/m2)为研究对象,受试者赤足以自己感觉舒适的常速自然行走在长10 m的跑道,共3次;使用常速摄像机进行平面定点拍摄,采集他们平地自然行走时的图像,通过视迅录像解析系统获得步长、下肢关节角度等运动学指标;数据采用SPSS 16.0进行统计学处理,受试者各项指标左右侧的比较采用配对t检验,两组儿童的各项指标比较采用独立样本t检验,P<0.05表示结果有显著性差异。结果 (1)对于相对步长,超重/肥胖儿童(0.44±0.001)与正常儿童显著不同(0.45±0.001)(P<0.05)。(2)足跟着地阶段,左髋及左、右膝在矢状面上的角度,超重/肥胖儿童(左髋(165.36±5.29)°,左膝(178.82±5.51)°,右膝(177.84±5.25)°)与正常儿童(左髋(161.99±4.28)°,左膝(174.67±4.91)°,右膝(174.67±4.91)°)显著不同(P<0.05);足跟蹬伸阶段,矢状面上的左踝关节角,超重/肥胖儿童((121.73±8.03)°)与正常儿童((118.44±6.70)°)显著不同(P<0.05)。结论自然行走过程中,超重/肥胖儿童比正常儿童相对步长显著减小;足跟着地阶段,超重/肥胖儿童在矢状面上左髋和左右膝关节角显著大于正常儿童;足蹬伸阶段,超重/肥胖儿童在矢状面上的左踝关节角显著大于正常儿童。这些变化可能会对超重/肥胖儿童的下肢功能造成一定的影响。
Objective To explore the effect of overweight / obesity on children’s gait by comparing kinematic parameters of walking in overweight / obesity children and normal children in primary school. Methods Forty overweight / obese children (age 9.6 ± 1.72 years, height 142.16 ± 12.19 cm, body mass index 24.32 ± 2.96 kg / m2) and 50 normal children (age 10.26 ± 0.72) years old; height (139.0 ± 7.50) cm; BMI (17.08 ± 1.25) kg / m2). Subjects barefoot walked on a 10 m long runway at a comfortable speed for a total of 3 times ; Using the speed camera fixed-point shooting, collecting images of their natural walking plains, video-visual analysis system as the pace, lower extremity joint kinematics and other indicators; data using SPSS 16.0 for statistical analysis, subjects Comparison of the left and right of the indicators using paired t test, the two groups of children were compared using independent samples t test, P <0.05 said the results were significantly different. Results (1) For relative steps, overweight / obese children (0.44 ± 0.001) were significantly different from normal children (0.45 ± 0.001) (P <0.05). (2) Heel-to-ground stage, left hip and right and left knee in the sagittal plane. Overweight / obese children (165.36 ± 5.29 ° left knee, 178.82 ± 5.51 ° left knee, 177.84 left knee ± 5.25) ° were significantly different from normal children (161.99 ± 4.28 ° left knee, 174.67 ± 4.91 ° left knee and 174.67 ± 4.91 ° right knee) (P <0.05) The sagittal angle of the left ankle joint in the overweight / obese children (121.73 ± 8.03 °) was significantly different from that in the normal children (118.44 ± 6.70 °) (P <0.05). Conclusions During walking, the relative steps of overweight / obese children were significantly reduced compared with those of normal children. In the heel to ground stage, the left hip and left and right knee joint angles were significantly larger in the sagittal plane than those in normal children. , The left ankle joint angle of the overweight / obese children in the sagittal plane was significantly larger than that in normal children. These changes may have some effect on lower limb function in overweight / obese children.