About the Authors

Klas H. Pettersen

klas.pettersen@gmail.com

Affiliation Department of Mathematical and Technological Sciences, Norwegian University of Life Sciences, Ås, Norway

Scott M. Bugenhagen

Affiliation Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America

Javaid Nauman

Affiliation Department of Circulation and Medical Imaging, Cardiac Exercise Research Group, NTNU Norwegian University of Science and Technology, Trondheim, Norway

Daniel A. Beard

Affiliation Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America

Stig W. Omholt

Affiliation Department of Circulation and Medical Imaging, Cardiac Exercise Research Group, NTNU Norwegian University of Science and Technology, Trondheim, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KHP SWO. Performed the experiments: KHP DAB SMB. Wrote the paper: SWO KHP DAB. Extracted and compiled empirical test data from the HUNT2 Survey: JN.