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由罗列指数年变
,
学生年成
体
变
,由一年级至三年级时,从瘦
趋向适
、肥胖
,至四年级则及趋向瘦
、适
体
。