Hideki Kawahara, Toshio Irino, Wakayama University, Japan; Toshie Matsui, Toyohashi University of Technology, Japan; Kohei Yatabe, Waseda University, Japan; Ken-Ichi Sakakibara, Health Science University of Hokkaido, Japan; Minoru Tsuzaki, Kyoto City University of Arts, Japan; Masanori Morise, Meiji University, Japan