1. 1College of Sports and Health, Shandong Sport University, Jinan, Shandong, China
2. 2College of Physical Education and Sports, Beijing Normal University, Beijing, China
3. 3Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. 4Lab of Biomechanics, Shandong Institute of Sport Science, Jinan, Shandong, China