About the Authors

Yuji Yamamoto

yamamoto@htc.nagoya-u.ac.jp

Affiliations Research Center of Health, Physical Fitness and Sports, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan, Department of Psychology and Human Developmental Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan

Keiko Yokoyama

Affiliations Division of Applied Physics, Faculty of Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan, Japan Society for the Promotion of Science, 5-3-1, Koujimachi, Chiyoda-ku, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YY KY. Performed the experiments: YY KY. Analyzed the data: YY KY. Contributed reagents/materials/analysis tools: YY KY. Wrote the paper: YY.