About the Authors

Keiko Yokoyama

yokoyama@htc.nagoya-u.ac.jp

Current address: Division of Applied Physics, Faculty of Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan.

Affiliations Graduate School of Education and Human Development, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan, Japan Society for the Promotion of Science, 5-3-1, Koujimachi, Chiyoda-ku, Tokyo, Japan

Yuji Yamamoto

Affiliation Research Center of Health, Physical Fitness and Sports, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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