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,由一年级至三年级时,从瘦长适中、肥胖,至四年级则及瘦长、适中的体。