Background Info: Our project tested heart beat rate after doing physical exercise. Heart beat rate was measured after standing in place for a minute, walking in place for a minute, and running in place for a minute.
Why we chose this topic: We were curious to figure out how various daily activities affected our heart rate. In addition, after watching the video on heart attacks we were concerned about how each activity plays a role in our heart rate, and how we can take care of our hearts in the long-run.
QUESTION: Does physical exercise increase a person's heart beat rate? Does the physical intensity of the exercise have a positive correlation with heart beat rate.
HYPOTHESIS: We think that physical exercise increases heart beat rate. The more intense the activity, the higher the heart beat rate will go.
METHODS: We first measured a person's heart rate for 1 minute using Vernier's Hand-Grip Heart Rate Monitor. During this one minute, we would either stand, walk, or run in place. Make sure to rest for a few minutes before doing another run of the experiment. After Logger Pro finished collecting data on our laptops, we examined it.
HOW TO HOLD THE HEART GRIP MONITOR
VARIABLES: The intensity of the exercise was the independent variable and the dependent variable was the heart rate.
DATA AND GRAPHS
Leo's heart rate while running
Matthew's heart rate while walking
Zabin's heart rate while standing (Went from 84-94 beats per minute)
Eric's heart rate while standing
Vikram's heart rate while running
Vikram's heart rate while standing
Vikram's heart rate while walking in place
Zabin's heart rate while running
Zabin's heart rate while walking
Eric's heart rate while running
Eric's heart rate while walking in place
Although the values on the tables are not readable, the points on the graphs show that their is an increase in heart rate when exercising. In addition, the faster we moved, the steeper the slope of the graph was. Therefore, we can conclude that the physical intensity had a positive effect on heart rate.
PHYSIOLOGY ASPECT: Cells transport oxygen and energy using blood. The more intense an exercise becomes, the more oxygen and energy is necessary for your body. So, blood needs to be shipped out much faster. In order to ship blood faster, the heart must pump blood out faster. Therefore, heart rate goes up. Since running in place required the most energy, the heart rate went up the most.
FUTURE ADDITIONS:
When planning this experiment, we also thought about testing the CO2 emissions during exercise. However, we did not have time and ended up doing only heart rate. So, if we repeat this experiment again, we will add that variable.
Thanks to Leo Yu and Matthew Huang for also contributing data sets.
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