Funding for this research was provided by:
Natural Science Foundation of Shanghai (19ZR1452900)
the Research Projects of General Adminstration of Sport of China (2018HT019)
Text and Data Mining valid from 2020-03-13
Received: 10 November 2019
Accepted: 18 February 2020
First Online: 13 March 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethics Committee of Shanghai University of Sport, China (ID number: 2018058) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interest.