1. Cabinet Office. Annual Report on the Aging Society 2006, Available: http://www8.cao.go.jp/kourei/english/annualreport/2006/06wp-e.html .
2. Sturnieks DL, George R, Lord SR. Balance disorders in the elderly. Neurophysiol Clin. 2008;38:467–78.
3. Takahashi K, Takahashi HE, Nakadaira H, Yamamoto M. Different changes of quantity due to aging in the psoas major and quadriceps femoris muscles in women. J Musculoskelet Neuronal Interact. 2006;6:201–5.
4. Hohne KH, Pflesser B, Pommert A, Riemer M, Schubert R, Schiemann T, Tiede U, Schumacher U. A realistic model of human structure from the visible human data. Methods Inf Med. 2001;40:83–9.
5. Qin Y, Cheng Z, Zhuang T, Wang H, Wang Y, Yan Z, Tiede RM, Hohne U. Interactive segmentation of muscles and 3D representation of meridians based on visible human. Conf Proc IEEE Eng Med Biol Soc. 2005;5:5116–9.