Yijian's research focuses on injury prevention and mobility enhancement in older adults. He received his PhD in May 2015 from Simon Fraser University, and his doctoral research sought to understand the circumstances of falls and factors associated with risk for fall-related injuries in older adults in long-term care. His current post-doctoral research involves quantifying mobility in older adults in long-term care through video capture and wearable sensors, evaluation of adapted physical activity programs on mobility enhancement for older adults in assisted living, and evaluation of patient compliance in acute care in wearing a novel stick-on hip protector for hip fracture prevention. Ultimately, he aims to improve older adults’ health and mobility so that they can live independently with high quality of life.