Bio Ia 1 - Heart Rate

In: Science

Submitted By Kaylina
Words 1211
Pages 5
An examination of the effect of stress on the human resting heart rate
By Kathryn Hesser, Westwood High School, Junior
Introduction
This experiment aims to analyze the factors that may affect the resting heart rate. The resting heart is the beats per minute of the heart when a person is calm and at rest.
One factor that may affect the resting heart rate is stress. Stress can be broadly defined by the strain felt by a person mentally, physically, and/or emotionally. In 1967, scientists Thomas Holmes and Richard Rahe studied the effects of stress on over 5,000 people through a survey that asked the subjects whether or not the subject experienced 47 life events. Each event had a certain “point value” corresponding to how much stress the event caused. The tally of the point value for one subject is the subject’s stress level. The higher the stress level, the more “stressed out” the subject was. An adaptation of the Holmes-Rahe survey was forged for high-school and college students and is used by institutions such as Baylor University and Hillsborough Community College. This adaptation is used as the Stress Level Survey in this experiment. The correlation, between stress level and resting heart rate, is what this experiment aims to determine.
Hypothesis
There will be a strong correlation between stress level and the resting heart rate. As stress level increases, the resting heart rate will increase as well. The null hypothesis is there will not be a strong correlation either way between stress level and the resting heart rate.
Materials
20 High school freshmen test subjects
20 Consent forms
20 Stress Level surveys
1 Stop Watch
1 Stress Level Survey Key

Method Give consent forms to test subject. Once all consent forms are collected, give test subjects Stress Level surveys. Have test subjects complete the survey while experimenter is present. No…...

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