Yi-Ju Tsai received a B.S. degree in physical therapy from the National Cheng Kung University, Taiwan, in 1996, and an M.S. and Ph.D. degree in Physical Therapy and Biokinesiology from the University of Southern California, Los Angeles, U.S., in 2001 and 2006, respectively. She is currently an Associate Professor at the Department of Physical Therapy and a joint faculty at the Institute of Allied Health Sciences, National Cheng Kung University, Tainan, Taiwan. She is also the Director of the Exercise and Movement Science Laboratory. Her main research interests relate to the biomechanical and neuromuscular control strategies of human movement under various environmental interfaces, the aging process, the orthopedic pathologies accompanying symptoms and altered functions, as well as the response to exercise or physical therapy interventions.