Dr. David Niederseer is a consultant cardiologist and sports cardiologist at the Hochgebirgsklinik Davos, Switzerland, the largest cardiac rehabilitation facility in Switzerland. He holds degrees in medicine (MD), sports science (BSc), and a PhD in molecular medicine and is trained in internal medicine and cardiology. Dr. Niederseer has a special interest in sports cardiology, cardiac rehabilitation, exercise training, and testing, as well as preventive cardiology. He has published extensively in these areas, is a nucleus member of several national and European societies or working groups, including the Sports Cardiology and Exercise Section of the EAPC, and is frequently invited to conferences as a speaker. As an ad hoc reviewer, he serves for leading journals. Additionally, he served as a physician for the Swiss Ice Hockey Federation.