Aaron M Saikin

Lower extremity strength and power are associated with 400-meter walk time in older adults: The InCHIANTI study.

Michael E. Miller, S. Bandinelli, L. Ferrucci, 2006, The journals of gerontology. Series A, Biological sciences and medical sciences.

Exercise prescription using resting heart rate plus 20 or perceived exertion in cardiac rehabilitation.

M. Whaley, P. Brubaker, J. H. Ross, 2004, Journal of cardiopulmonary rehabilitation.