1. Cabinet office, Government of Japan, White paper of elderly society in 2013(description) Chapter1 Status of population aging, Cabinet office, Government of Japan (online) (2013), available from <http://www8.cao.go.jp/kourei/whitepaper/w-2013/gaiyou/s1_1.html>, (accessed on 30 November, 2013) (in Japanese).
2. Ehara, Y. and Yamamoto, S., Body dynamics introductory book analysis of standing motion, Ishiyaku Pab. Inc.(2001), pp.52-55 (in Japanese).
3. Hatsukari, T., Kuroko, S., Miyake, N. P., Higuchi, J., Hirata, Y. and Kosuge, H., Standing support system adjusting to special quality of elderly, Transactions of the Japan Society of Mechanical Engineers, Series C, Vol.74, No.740 (2008), pp.186-193 (in Japanese).
4. Ichikawa, K., Technic and method of transfer, Rehabilitation engineering society of Japan, (2001) (in Japanese).
5. Kunii, K., Kamio, H., Yatougo, T. and Nomura, K., Study on vertical railing for toilet to support standing, Journal of Architecture and Planning, Vol.561 (2002), pp.167-172 (in Japanese).