How A Heart Performs During Exercise

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Bruce Protocol-Report

Laboratory # 4
October 26, 2015
Travis H. Nelson

INTRODUCTION: Knowing how one’s heart performs during exercise is critical to the overall assessment of one’s health and well-being. Prior to 1963 the world was without a way to properly test and evaluate cardiovascular function. Step tests did exist, but often times they were too demanding on patients with heart disease1. Because of this, doctors had to rely on the patients input and complaints of exertion. Thus patients were only properly evaluated at rest. That is, until Robert A. Bruce developed a standardized treadmill test, now known as the Bruce Protocol.
Bruce set out to enlighten himself and the world about the processes involving aerobic
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Equally important, scientists were soon able to distinguish whether or not results were due to aging, or disease.
Today, the Bruce Protocol is essential in testing the aerobic capacity and cardiorespiratory performance in athletes and patients alike. It is also useful in that it can help inform people of their risk level, and their body’s performance level. Information obtained from this test has been known to encourage better exercise habits in patient exhibiting risk factors1.
HYPTHESIS: If the intensity of exercise is increased over time, then systolic blood pressure, heart rate, and rate of perceived exertion (RPE) should correspondingly increase as well. Once the stimulus (exercise) has been removed, heart rate and systolic blood pressure should gradually return to homeostasis.
PURPOSE: This laboratory’s main goal was to properly conduct a maximal treadmill test, which included accurate and proper measurements of certain cardiovascular fitness markers. These included heart rate, blood pressure, and the RPE during exercise.

METHODS: Bruce Protocol was performed as follows. The patients had blood pressure and heart rate were manually evaluated at rest, and the blood pressure cuff was left on during the test. Immediately following the initial readings, the patient stepped on a treadmill
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