Homeostasis Lab Report: How The Time Of The Exercise Affects Heart Rate During Exercise

Introduction

Homeostasis is the tendency toward a relatively stable equilibrium between interdependent elements. Homeostasis refers to stability and balance within the body. Cellular respiration is a set of metabolic processes that take place in the cells of organisms to convert energy from nutrients into (ATP), and then release waste products. Exercise is an activity requiring physical effort, carried out to improve health and fitness. Exercise relates to homeostasis because, during homeostasis, the body increases breathing rate, heart rate, and sweat production to maintain homeostasis. Exercise relates to cellular respiration because cellular respiration is a chemical reaction that occurs in your cells to create energy and when you are exercising your muscle cells are creating ATP to contract. The cardiovascular, integumentary, respiratory, and muscular systems work together to help the body maintain a stable temperature.

Problem

We studied how the time of the exercise affects heart rate during exercise. The time of the exercise is the I.V because it doesn’t depend on another and because whatever changes in the I.V affects the D.V. Heart rate would be the D.V because it is what is being measured and studied in the experiment and the heart rate goes up depending on the duration of the timer so we have to record it. The type of exercise we do is the controlled variable because it doesn’t change throughout the experiment and we continue to do the same exercise just a longer duration. Also, its unchanging state allows the relationship between the other variables being tested to be better understood.

Hypothesis

We hypothesized that if you exercise then your heart rate will increase. We expect this result because during exercise the body’s muscles increase their activity level and consume more oxygen. To meet this demand the heart must rapidly increase the rate at which it beats and pushes blood through the body. This is why the heart beats faster during exercise.

Materials

• Timer
• 4 students

Procedure

Start by measuring your resting heart rate. Place two fingers on the vein in your wrist or the vein in your neck.

Count your heartbeats for 15 seconds. Multiply the number of heartbeats you had in those 15 seconds by 4. This is the amount of beats per minute (bpm). Write that number in the next column.

Exercise for 30 seconds (Jumping Jacks, push-ups, run-in-place).

Immediately after the exercise, count your heartbeats in the same way that you did previously. Write the number of beats per minute in the next column.

Exercise for 60 seconds (Jumping Jacks, push-ups, run-in-place).

Immediately after the exercise, count your heartbeats in the same way that you did previously. Write the number of beats per minute in the next column.

Exercise for 120 seconds (Jumping Jacks, push-ups, run-in-place).

Immediately after the exercise, count your heartbeats in the same way that you did previously. Write the number of beats per minute in the next column.

Data/Results

Time Spent Exercising (seconds)

Average Heart Rate (Beats/Minute)

68

30

88

60

140

120

132

Conclusion

During exercise, heart rate increases as time goes on. The graph shows that during the duration of the experiment as time goes on the heart rate increased. From 0, 30, 60, and 120 seconds the heart rate beats per minute were 68, 88, 140, and 132. So this shows the increase over time. During homeostasis, the body increases breathing rate, heart rate, and sweat production to maintain homeostasis. Different body systems interact during exercise to maintain homeostasis since The cardiovascular, integumentary, respiratory, and muscular systems work together to help the body maintain a stable temperature.