1. Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan
2. Division of Shoe and Bag Business, Victor Rackets Ind. Corp, Taipei, Taiwan
3. Department of Athletic Performance, National Taiwan Normal University, Taipei, Taiwan
4. Graduate Institute of Sports Equipment Technology, University of Taipei, Taipei, Taiwan
5. Department of Physical Therapy, University of Nevada, Las Vegas, Nevada, USA
6. Office of Physical Education, Tunghai University, Taichung, Taiwan