目的：通过比较肥胖和非肥胖儿童六种站立情况下的压力中心偏移，研究肥胖儿童短时间静态平衡特征。方法：应用0.5m Footscan人体平衡系统（RSscan International公司，比利时），获取47名肥胖儿童和50名非肥胖儿童分别双足、单足睁眼和闭眼站立10秒时的压力中心摆动参数。结果：在双足闭眼站立时，肥胖儿童前后方向上的最大动摇径显著大于非肥胖儿童。在左足睁眼站立时，肥胖男孩压力中心摆动速度、左右方向上的最大动摇径显著小于非肥胖男孩，肥胖女孩左右方向上的最大动摇径显著大于非肥胖女孩。在左足闭眼站立时，男孩的压力中心摆动速度显著大于女孩。结论：短时间内，双足闭眼站立时，肥胖儿童前后方向上的平衡能力比非肥胖儿童差；肥胖对不同性别儿童的静态平衡影响不同。左足睁眼站立时，肥胖男孩平衡能力优于非肥胖男孩，肥胖女孩平衡能力差于非肥胖女孩；左足闭眼站立时，女孩的平衡能力优于男孩，其它情况下男女无显著差异。由于肥胖及性别因素会影响儿童短时静态平衡能力，建议对于不同性别肥胖儿童减重采取不同的运动模式。
Objective: To explore the characteristics of short-term static balance of obese children by comparing the excursion of center of pressure (COP) of obese and non-obese children during the six kinds of circumstances. Methods: Characteristics of balance was examined using the 0.5m Footscan balance plate system (RSscan International, Belgium). Parameters on COP excursion of 47 obese children and 50 non-obese children were obtained when they were asked to stand for 10 seconds on both feet and single foot with eyes open and eyes closed, respectively. Results: The maximum displacement of COP in the anterior-posterior direction of the obese children was significantly greater than that of the non-obese children when children stood on both feet with eyes closed. When children stood on the left foot with eyes open, the sway velocity of the obese boys was significantly lower than that of the non-obese boys; the maximum displacement of COP in the medial-lateral direction of the obese boys was significantly lower than that of the non-obese boys and the maximum displacement of COP in the medial-lateral direction of the obese girls was significantly greater than that of the non-obese girls. The sway velocity of the boys was significantly greater than that of the girls when children stood on the left foot with eyes closed. Conclusions: In a short period of time, the static balance of obese children in the anterior-posterior direction is worse than that of non-obese children when standing on both feet with eyes closed. Obesity has different impacts on the static balance of different genders, the performance of static balance for obese boys are better than that of non-obese boys, the performance of static balance for obese girls are worse than that of non-obese girls when standing on left foot with eyes open. Girls have a better static balance performance than boys when standing on left foot with eyes closed. There were no significant differences for static balance performance between boys and girls in other circumstances. As static balance of children is affected by obesity and gender, it is suggested that different methods of losing weight should be considered for obese children of different genders.