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Karina Plata exit project 802
Transcript of Karina Plata exit project 802
Effects of Caffeine on Blood Pressure
Variables and Hypothesis
Data Tables & Graphs
Blood pressure is pressure which is exerted by the blood against the walls of the blood vessels. It changes with the strength of the heartbeat. Then It's recorded as 2 numbers. It's written one above the other. Normal blood pressure is less than 120 mmHg (millimeters of mercury )systolic and less than 80 mmltg diastolic. For example it would be 120 over 80 millimeters of mercury. Prehypertension ranges from 120-139 systolic and 80-89 diastolic.Systolic is the top number, also the highest, it measures the pressure in the arteries when the heart beats. Diastolic is the bottom number, it measures the pressure in the arteries between heartbeats.
What effect does Caffeine have on blood pressure?
Manipulated: Blood pressure
- aneroid monitor
1. Take your blood pressure before eating or drinking anything
2. Eat a pop tart and wait 40- 45 minutes
3. Check and record your blood pressure
4. Drink a cup of coffee and wait 40 minutes
5. Check and record your blood pressure
6. Drink one can of soda and wait 40 minutes
7. Check and record your blood pressure
8. Drink a cup of tea and wait 40 minutes
9. Check and record your blood pressure
My hypothesis was supported because the higher the blood pressure the larger the amount of caffeine there is in that beverage. Coffee has a larger amount of caffeine in it and the effect it had on the person was a blood pressure of 118/70 mmHg (millimeters of mercury) on the first trial. Even though it had the largest amount of caffeine in it, the blood is normal. However on the second trial the blood pressure was 120/ 70 mmHg. According to "MayoClinic.com,"the effects caffeine has on blood pressure are, it stimulates the central nervous system with small amounts such as: feeling more awake, heart beating, having a smaller appetite etc. However with larger amounts, you become more anxious, can't concentrate, get headaches, and become confused.
If the sweeter the amount of caffeine in one beverage then the larger the effect it has on your blood pressure.
According to (AHA) the American Heart association the blood pressure for the coffee is considered a normal blood pressure.
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