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由罗列指数的变化，了解成长的变化，由一级至三级时，从瘦长趋适中、肥胖，至四级则及趋瘦长、适中的。