About the Authors

Yuji Yamamoto

yamamoto@htc.nagoya-u.ac.jp

Affiliation Research Center of Health, Physical Fitness, and Sports, Nagoya University, Nagoya, Japan

Keiko Yokoyama

Affiliations Division of Applied Physics, Department of Engineering, Hokkaido University, Sapporo, Japan, Research Fellowship Division, Japan Society for the Promotion of Science, Tokyo, Japan

Motoki Okumura

Affiliation Faculty of Education, Shizuoka University, Shizuoka, Japan

Akifumi Kijima

Affiliation Graduate School of Education, University of Yamanashi, Kofu, Japan

Koji Kadota

Affiliation Graduate School of Medicine, Osaka University, Toyonaka, Japan

Kazutoshi Gohara

Affiliation Division of Applied Physics, Department of Engineering, Hokkaido University, Sapporo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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