Heart Rate Case Study

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Question – To what extend caffeine can affect the heart rate before and after physical activity in boys and girls aged 17-18?

Introduction – Heart rate is the number of heartbeats per unit of time; usually heat rate is expressed as beats per minute (BMP).
Moreover, heart rate, also known as pulse. A normal heart rate of people is different and it depends on the age, body size, heart condition, weather the person is sitting or moving. However for adults 18 and older, a normal heart rate is between 60 and 100 beats per minutes. (1)
Caffeine is a bitter substance and the chemical formula is C8H10N4O2. (2)
Caffeine is soluble in water and many other organic solvents. We can find it in coffee, chocolate, soft drink, tea and other products. Caffeine …show more content…

Then, after drinking coffee, the average of heart rate of girls after 10 minutes is 133 and average in boys is 133.6. Therefore, after consuming coffee the average heart rate in girls changed by 15% and boys by 14.6%.

Compare the heart rate of water and coffee between girls and boys
According to the diagram (2), the average of heart rate of girls who consumed the water is 113 and boys average is 106.3 after physical activity. Then, after drinking coffee, the average of heart rate of girls after 10 minutes is 133 and average in boys is 133.6. Therefore, after consuming coffee the average heart rate in girls changed by 15% and boys by 20%.

Conclusion:
To conclude my experiment, as I expect Tachycardia didn’t happen before physical activity and the heart rate of girls and boys were between 60-100 bmp, which is normal heart rates.
However, Tachycardia was happened after physical activity as I expect but heart rate was different between no drinks and caffeine. In girls heart rate increased by 15% and boys by 14.6% after drinking caffeine. This is a result of absorption of caffeine by our body that can affect in our brain and nervous system. Thus, that leads to have more heart rate in our

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