Kelly C R, Redford J B, Zilber S, Madden P A
Arch Phys Med Rehabil. 1981 Jul;62(7):324-7.
Balance in double stance was measured on a force platform with an X-Y Plotter (stabilograph) in 57 healthy boys aged 5 to 10 years and in 13 children with Duchenne muscular dystrophy (DMD), aged 6 to 15 years. Horizontal excursions of the center of gravity were measured in the anteroposterior (AP) and right-left (RL) planes. Measurements superimposed upon foot position tracings were compared with a potential excursion defined by the outer margin of foot position. Balancing ability was expressed as a ratio of measured excursion to potential maximal excursion. The objective was to determine whether a quantitative functional measure relating to muscle weakness and standing could be obtained. The mean ratio of AP excursions for healthy children was 0.5 (range 0.29 to 0.7); for dystrophic children 0.29 (range 0.07 to 0.57). The mean ratio of RL excursions for healthy children was 0.57 (range 0.23 to 0.77); for dystrophic children 0.36 (range 0.1 to 0.63). These ratios tended to increase with age in healthy children but decreased in those with dystrophy. DMD children have less ability to move the horizontal center of gravity within the base of support on double stance than their healthy peers of comparable age. Stabilography may be useful not only for assessing balance and documenting its deterioration but also for evaluating the effectiveness of treatment in DMD.
在一个带有X-Y绘图仪（稳定仪）的测力平台上，对57名年龄在5至10岁的健康男孩以及13名年龄在6至15岁的杜氏肌营养不良症（DMD）患儿的双支撑平衡进行了测量。在前后（AP）平面和左右（RL）平面测量重心的水平偏移。将叠加在足部位置轨迹上的测量结果与由足部位置外缘定义的潜在偏移进行比较。平衡能力用测量偏移与潜在最大偏移的比值表示。目的是确定是否能够获得与肌肉无力和站立相关的定量功能指标。健康儿童AP偏移的平均比值为0.5（范围为0.29至0.7）；营养不良儿童为0.29（范围为0.07至0.57）。健康儿童RL偏移的平均比值为0.57（范围为0.23至0.77）；营养不良儿童为0.36（范围为0.1至0.63）。这些比值在健康儿童中倾向于随年龄增加，而在营养不良儿童中则下降。与同龄健康儿童相比，DMD患儿在双支撑时在支撑面内移动水平重心的能力较弱。稳定仪不仅可用于评估平衡并记录其恶化情况，还可用于评估DMD治疗的效果。
