Funding for this research was provided by:
Japan Society for the Promotion of Science (18H03155, 18K17863, 17H04752, 16H03233)
Ministry of Education, Culture, Sports, Science and Technology
Tenri University Research Grant
Text and Data Mining valid from 2019-12-01
Received: 16 June 2019
Accepted: 20 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The present study was approved by the Ethics Committees of the Juntendo University, Nippon Sport Science University, Tenri University, and National Institute of Fitness and Sports in Kanoya and was performed in accordance with the Declaration of Helsinki. All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.