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 Gender Differences in Resting Pulse Rate of Seventh Graders Researched by Shari S. 1999-2000

PURPOSE

The purpose of this experiment was to determine if gender in seventh graders affects resting pulse rate.

I became interested in this idea because my mother’s job requires her to take the pulses of adults and this has caused me to think about pulse rates of people my age, teenagers.  I have also been interested in the heart for sometime, because I know so many people have heart problems.

The information gained from this experiment could assist doctors in knowing healthy pulse rate levels in young male and female adults (about 13 years of age).  If a teenager’s pulse rate was a lot higher or lower than expected, it might indicate problems the doctor could remedy.

HYPOTHESIS

My hypothesis is that seventh grade females’ pulse rates will be higher than the males’ pulse rates.

I base my hypothesis on a statement made in The Circulatory System, " Women’s hearts usually beat faster than men’s."

EXPERIMENT DESIGN

The constants in this study were:
* The number of test subjects from each gender.
* The amount of activity allowed before each pulse is taken (3 minutes of sitting at rest)
* The person taking the pulses
*  Location (brachial) where the pulse is taken
* Procedure to take the pulse
* Age group of subjects (in years)

The manipulated variable was the gender of each test group.

The responding variable was  the number of beats per minute in each gender.

To measure the responding variable I will take the brachial pulses of each subject three times, find the mean of the two separate genders and find the differences between each gender.

MATERIALS

 QUANTITY ITEM DESCRIPTION 25 7th grade male students 25 7th grade female students 2 Chairs 1 Stopwatch/Watch

PROCEDURES

1. Obtain permission slips from each test subject.
2. Gather materials for experiment.
3. Have one test subject brought to testing area.
4. 3 minutes of seated rest should be allowed for test subject.
5. At 3-minute mark take 15 second brachial pulse for subject
6. Record pulse
7. At 4 minute mark take 15 second pulse
8. Record pulse
9. At 5 minute mark take pulse for 15 seconds
10. Record pulse
11. Calculate mean of three trials
12. Multiply result by 4
13. Repeat steps 3-12 for remaining  test subjects
14. Calculate mean between each gender and find all separate averages

RESULTS

The original purpose of this experiment was to determine if gender affects seventh grade resting pulse rate.

The results of the experiment were that the b.p.m. of the females was in fact higher than the male b.p.m. by six beats.  The overall female average was 85 b.p.m. and the overall for males was 79 b.p.m.

See graph below

CONCLUSION

My hypothesis was that the female pulse rates would be higher than the males’ pulse rates.

The results indicate that this hypothesis should be accepted because the female overall average was 85 b.p.m. and the males’ overall average was 79 b.p.m.  This indicates that on average 7th grade females b.p.m. are 6 beats higher than the male b.p.m.

Because of the results of this experiment, I wonder  how male and female athletes  pulse rates compare. I wonder if the difference in b.p.m. would be higher, the same, or lower than in this experiment.

If I were to conduct this project again  I would have a larger sample size so I could improve the accuracy rate of this experiment.