Miyata S
Nihon Seikeigeka Gakkai Zasshi. 1980 Aug;54(8):739-48.
In order to estimate the gait with force plate, two dimensional analysis with Lisajou's figure composed of two of the three components of floor reaction force was attempted. In normal gait, sagittal component (alpha-diagram) appears as an inverted heart pattern, frontal component (beta-diagram) as a S-shaped pattern and horizontal component (gamma-diagram) as a Gourd-shaped pattern. The most important external force which acts on the body during progression is the sagittal component of floor reaction force, so that the author used the alpha-diagram which was composed of vertical and fore and aft forces for the purpose of gait analysis in normal adults. This study was conducted on 100 normal adults, 50 males and 50 females ranging in age from eighteen to thirty-five years. alpha-diagram was classified into 6 types in males and 5 types in females based on the shape of alpha-diagram and discriminant functions and there were some difference depending on the individual, sex and side was noted. Male differed from female mostly during the heel strike phase. Propulsion forces of dominant side was smaller than that of the other side.
为了通过测力板评估步态，尝试对由地面反作用力三个分量中的两个组成的李萨如图形进行二维分析。在正常步态中，矢状面分量（α图）呈现为倒心形图案，额面分量（β图）呈现为S形图案，水平面分量（γ图）呈现为葫芦形图案。在行进过程中作用于身体的最重要外力是地面反作用力的矢状面分量，因此作者使用由垂直力和前后力组成的α图来对正常成年人进行步态分析。本研究对100名正常成年人进行，其中男性50名，女性50名，年龄在18至35岁之间。根据α图的形状和判别函数，α图在男性中分为6种类型，在女性中分为5种类型，并且根据个体、性别和左右侧存在一些差异。男性与女性的差异主要出现在足跟触地阶段。优势侧的推进力小于另一侧。
