@phdthesis{oai:tsukuba.repo.nii.ac.jp:00009013,
 author = {Liu, LiJing and 劉, 莉荊},
 month = {},
 note = {Osteoporosis is a serious health problem that is characterized by low bone mineral density(BMD). Since the exercise produces high levels of mechanical force on bone ..., 2004, Includes bibliographical references},
 school = {筑波大学, University of Tsukuba},
 title = {Effects of long-term different physical exercises on volumetric bone mineral density, bone geometric properties and strength index : A pQCT study},
 year = {2005}
}