Relation of Potassium Flux During Incremental Exercise to Exercise Intensity

Neil L. Coplan, MD, Gilbert W. Gleim, PhD, and James A. Nicholas, MD

From the Nicholas Institute of Sports Medicine and Athletic Trauma, 130 East 77th Street, New York, New York 10021, and the Division of Cardiology, Department of Medicine, Lenox Hill Hospital, New York, New York.

Serum potassium and catecholamine levels, the latter an important regulator of potassium homeostasis both begin to increase during exercise at an intensity associated with a rise in serum lactate (lactate threshold). This study was performed to evaluate the effect of exercise intensity on postexercise potassium flux.

The American Journal of Cardiology, Volume 62, pp. 334-335