1 School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom; Division of Cardiology, University of British Columbia (UBC), Vancouver General & St. Paul's Hospital Echocardiography Departments, Vancouver, British Columbia, Canada; Cardiology Department, University Hospitals Birmingham National Health Service (NHS) Foundation Trust, Birmingham, UK. Electronic address: s.j.t.balthazaar@bham.ac.uk.
2 Cardiology Department, University Hospitals Birmingham National Health Service (NHS) Foundation Trust, Birmingham, UK.
3 School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom; Centre for Trauma Science Research, University of Birmingham, Edgbaston, Birmingham, UK.