Eric A Kirk1, Kevin J Gilmore1, Charles L Rice1,2,3. 1. Neuromuscular Laboratory, School of Kinesiology, The University of Western Ontario , London, Ontario , Canada. 2. Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario , London, Ontario , Canada. 3. The Canadian Centre for Activity and Ageing, The University of Western Ontario , London, Ontario , Canada.