GOLD

#### The effects Exercise has on the Heart

The heart is a very important.It’s the organ that transfers blood throughout your entire body. Also doing exercise makes your heart healthier. So I will be measuring different people’s heart rate as they complete different exercises.

### Hypothesis

Hypothesis 1: Running will increase the heart rate the most out of all the other activities.

Hypothesis 2: An adult’s heart rate while running is higher than a kid’s heart rate while performing the same exercise.

Hypothesis 3: As the body position changes, so does the heart rate.

### Variables

Manipulated Variable: For this variable, I will be using different people to do all of my exercises.

Responding Variable: For the responding variable, it would be different but, similar results from all the different people.

Constant Variable: the constant variable is that even though there will be different people and the exercises will be the same.

### Procedure

Step 1: Go over to Fish Creek to start the experiment

Step 2: Start doing the exercises in order ex. (sitting, standing, walking, jogging, running.)

Step 3: After one rep I will be checking their fitness tracker watch to see their heart rate.

Step 4: They will be doing this 3 times.

Step 5: After all exercises, I will look at all their heart rates from all the reps and see what the average is.

Step 6: I will look at all the kid's and adults' heart rates to see what the average is for the kids and for the adults.

### Observations

6.3 Data Collection

The following data were collected from the 20 subjects for the analysis. The data has been divided according to the following criteria to show the various activities and their corresponding heart rates:

Table 1: Heart Rate with activities for considered Age Group

Table 2: Heart Rate with activities for the male gender

Table 3: Heart Rate with activities for the female gender

Table 4: Heart Rate of Children

Table 5: Heart Rate of Adult vs Children

## 7.0 Statistical Analysis

In this part of my project, I will talk about central tendency values, mean, median, and mode of children vs adults based on the BPM data presented in table 4.

Heart rate in Sitting position
Mean:

73+73+75+80+82÷5

= 383÷5

= 77

Median: List of data from lowest to highest

73 73 75 80 82

The median is 75 because it’s the middle number of the 5 data values.

Mode: The most commonly occurring number

= 73

Range: Subtraction of lowest from highest number

= 82 - 73

= 9

Standard Deviation

 Data    -      Mean Value Squared 73 - 77    = -4 73   - 77   = -4 75 - 77    = -2 80 - 77    = 3 82 – 77    = 5 -42 = 16 -42 = 16   -22 = 4   32 = 9   52 = 25 Variance =16+16+4+9+25÷5 = 70÷5 = 14 Standard Deviation Square root of 14 = 3.74

# 9.0 Conclusion

In view of the data that I collected for this experiment; my first hypothesis was correct. For every person that has participated in the project, running had the highest heart rate when compared to other activities.

For the second hypothesis, the average heart rate of the children is 160 BPM while that of adults was 155 BPM. The difference between them is not a significant one, and this is part of what I researched that as children grow, their heart rate is almost as that of an adult (please refer to introduction). This shows that the second hypothesis is incorrect.

The third hypothesis “As the body position changes, so does the heart rate.” This hypothesis is true as can be seen in the tables above. The heart rate changes from sitting, standing, walking, jogging, and running in ascending order. This shows that as the intensity of the exercise increases, so does the heart rate.

In conclusion, to answer my scientific questions, which says “what effect does exercise have on heart rate”; I have concluded that as the exercises become more intense the heart rate increase. Also, age, body position, and the type of activity being carried out will also have an impact on the heart rate.

### Application

9.1 Application

Exercise is good for the body and in order to make sure that we get the very best from exercising or one’s workout session, it is important to know the safe zone and monitor how hard your heart is working. In a sitting position which is the resting position, if your heart rate is higher than normal, it can be an indication that something is wrong.

To maximize one’s workout, it is good that one reaches their target heart rate which leads to a greater fitness level. This experiment will ensure that people know how different exercises affect their heart rate and how they can get to their target heart rate at a safe zone.

### Sources Of Error

9.3 Improvement to Project

One area of improvement would be to have a wider range of age groups to include a lot of people in order to get a wide range of data set.

# References

1. Ritz, S. (Ed.). (2017, January). Arrhythmia (abnormal heartbeat) (for parents) - Nemours kidshealth. Retrieved February 15, 2021, from https://kidshealth.org/en/parents/arrhythmias.html#:~:text=Typical%20normal%20resting%20heart%20rate,55%E2%80%9385%20beats%20per%20minute
2. The importance of heart rate when exercising. (n.d.). Retrieved February 15, 2021, from https://www.fitness19.com/the-importance-of-heart-rate-when-exercising/
3. Buddies, S. (2014, January 02). Sweaty science: How does heart rate change with exercise? Retrieved February 17, 2021, from https://www.scientificamerican.com/article/bring-science-home-heart-rate-excercise/
4. Charles Patrick Davis, M. (2020, April 15). How the Heart Works: Diagram, ANATOMY, blood flow. Retrieved February 15, 2021, from https://www.medicinenet.com/heart_how_the_heart_works/article.htm
5. Exercise helps your heart. (n.d.). Retrieved February 18, 2021, from https://wa.kaiserpermanente.org/healthAndWellness?item=%2Fcommon%2FhealthAndWellness%2Fconditions%2FheartDisease%2FexerciseBenefit.html
6. Stress relief from laughter? It's no joke. (2019, April 05). Retrieved January 15, 2021, from https://www.mayoclinic.org/healthy-lifestyle/stress-management/in-depth/stress-relief/art-20044456
7. MyersPhD, J., Myers, J., Jonathan Myers From the Cardiology Division, & Myers, C. (2003, January 07). Exercise and cardiovascular health. Retrieved February 15, 2021, from https://www.ahajournals.org/doi/full/10.1161/01.CIR.0000048890.59383.8D
8.

## Acknowledgment

I would like to thank my parents for letting me join CYSF. I would also like to thank TCS for this opportunity. I also thank all of my friends and family for participating in my study to make all of this possible.