1. School of Kinesiology; Faculty of Health Sciences, The University of Western Ontario; London Ontario Canada
2. German Sport University Cologne, Institute of Movement and Sport Gerontology; Cologne Germany
3. Department of Clinical Neurological Sciences; The University of Western Ontario; London Ontario Canada
4. Department of Physical Medicine and Rehabilitation; The University of Western Ontario; London Ontario Canada
5. Department of Anatomy and Cell Biology; Schulich School of Medicine and Dentistry, The University of Western Ontario; London Ontario N6G 1H1 Canada