Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sakamoto Hiroko and Miyoshi Masamitsu,Relationships between Factors in Daily Life and Changes in the Calcanel Stiffness during Pregnancy,The Japanese Journal of Nutrition and Dietetics,00215147,The Japanese Society of Nutrition and Dietetics,2007,65,1,11-20,https://cir.nii.ac.jp/crid/1390282681524144640,https://doi.org/10.5264/eiyogakuzashi.65.11