1. Cardiovascular Physiology and Rehabilitation Laboratory, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
2. Experimental Medicine Program, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
3. Physical Activity Promotion and Chronic Disease Prevention Unit, Vancouver, BC V6T 1Z3, Canada.
4. Cognitive and Functional Learning Laboratory, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.