1. Section for Sports Science, Department of Public Health, Aarhus University, Aarhus, Denmark (T.G., P.S., J.W., C.R.C., K.V.).
2. Department of Cardiology (R.N., K.P., N.R.J., M.R.S., H.E.B.), Aarhus University Hospital, Denmark.
3. Department of Biomedicine (F.V.d.P.), Aarhus University Hospital, Denmark.
4. Department of Cardiothoracic and Vascular Surgery (F.V.d.P.), Aarhus University Hospital, Denmark.
5. Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City (B.F.M.).