Stuart McGill, PhD, is a distinguished professor emeritus at the University of Waterloo in Ontario, Canada, and chief scientific officer at Backfitpro Inc. He is a world-renowned lecturer and expert in spine function, injury prevention, and rehabilitation. He has received several awards for his work, including the Volvo Bioengineering Award for Low Back Pain Research from Sweden and the Order of Canada for contributions to back pain assessment and treatment. McGill previously served as the president of the Canadian Society for Biomechanics and as an elected member of the executive for the International Society of Biomechanics. He sat on the editorial boards of the journals Spine, Clinical Biomechanics, and Journal of Applied Biomechanics. McGill has produced over 245 scientific publications on lumbar function, mechanisms of low back injury, investigation of rehabilitation programs matched to specific categories of back pain patients, and the formulation of strategies to avoid work-related injuries. He has provided expertise to government agencies, corporations, professional athletes and teams, and legal firms. He is one of the few scientists who, in addition to performing research, is regularly requested by those in the medical profession and by sports teams to consult on challenging patients from around the world.