Rick Jemmett graduated from the University of Toronto's Department of Physical Therapy in 1994. His clinical and research interests include the anatomical and motor control-related aspects of lumbar and shoulder pathology. He has taught continuing education courses for physiotherapists across Canada and in the United States since 1997. Rick has authored both peer-reviewed research as well as books on the topics of low back pain and 'core' conditioning for competitive athletes. Physiotherapeutic Management of Lumbar Spine Pathology is his third book. David MacDonald graduated from the Dalhousie University School of Physiotherapy in 1994, then pursued a manual therapy education, passing his Canadian Physiotherapy Asssociation orthopaedic manipulation exams in 2002. He has since gone on to graduate studies with Dr. Paul Hodges in Brisbane, Australia. His research has been presented at major scientific conferences and published in peer-reviewed journals. David teaches continuing education courses for physiotherapists through the Atlantic Manual Therapy Institute.