Summary:We examined the effects of mental stress during steady-state exercise on heart rate, blood pressure, pressure-rate product, and oxygen uptake in 10 coronary artery disease patients. Subjects walked at three mph with grade increases of 4% every two minutes until the target heart rate (60 % peak heart rate from a previous symptomlimited exercise test) was reached. A computerized StmpColor-Word Test (mental stress) was added one minute after the subject reached steady-state exercise and lasted 11 5 4 minutes. When mental stress was added to steadystate exercise it significantly (p

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