1. Center for Physical Activity and Aging, Department of Kinesiology and Sport Studies, Wichita State University, Wichita, KS 67260–0016, USA.
2. Department of Family and Community Medicine, University of Kansas School of Medicine – Wichita, Wichita, KS 67214–3199, USA.
3. Laboratory of Exercise Gerontology, Graduate School of Natural Sciences, Nagoya City University, 1 Mizuho-cho, Mizuho-kuNagoya 467–8502, Japan.