1. Faculty of Sport & Health Sciences, Ryutsu Keizai University, Ibaraki, Japan
2. Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
3. Department of Health and Sports Sciences, Kyoto Pharmaceutical University, Kyoto, Japan
4. Faculty of Health and Nutrition, Tokyo Seiei College, Tokyo, Japan
5. Faculty of Sport Sciences, Waseda University, Saitama, Japan
6. Institute of Health and Sport Sciences, University of Tsukuba, Ibaraki, Japan