瘦长型

That to know by the somatotype transformed, one grade raised to 3rd grade, ectomorph type trend to Mesomorph type or Endomorph type, Until 4th grade trend to Ectomorph type or Mesomorph type. 4.

㈢由罗列指数的年变化，了解学生年成长的体变化，由一年级至三年级，长趋适中、，至四年级则及趋长、适中的体。