Exercise standards for testing and training: A statement for healthcare professionals from the American Heart Association

G. F. Fletcher, G. J. Balady, E. A. Amsterdam, B. Chaitman, R. Eckel, J. Fleg, V. F. Froelicher, A. S. Leon, I. L. Piña, R. Rodney, D. G. Simons-Morton, M. A. Williams, T. Bazzarre