About the Authors

Satoru Kanamori

skanamo@juntendo.ac.jp

Affiliation Faculty of Health and Care and Nursing, Juntendo University, Tokyo, Japan

Yuko Kai

Affiliation Physical Fitness Research Institute Meiji Yasuda Foundation of Health and Welfare, Hachioji, Japan

Katsunori Kondo

Affiliation Center for Well-being and Society, Nihon Fukushi University, Nagoya, Japan

Hiroshi Hirai

Affiliation Faculty of Engineering, Department of Civil and Environmental Engineering, Iwate University, Morioka, Japan

Yukinobu Ichida

Affiliation Center for Well-being and Society, Nihon Fukushi University, Nagoya, Japan

Kayo Suzuki

Affiliation Center for Well-being and Society, Nihon Fukushi University, Nagoya, Japan

Ichiro Kawachi

Affiliation Department of Society, Human Development, and Health, Harvard School of Public Health, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SK YK KK IK. Analyzed the data: SK YK KK YI. Wrote the paper: SK YK KK IK. Reviewing of manuscript: SK YK KK HH YI KS IK. Acquisition of data: KK HH KS.