Pulse Rate Coursework

Effect of exercise on breathing

During exercise, the muscle cells respire more than they do at rest. This means:

  • Oxygen and glucose must be delivered to them more quickly
  • Waste carbon dioxide must be removed more quickly

This is achieved by increasing the breathing rate and heart rate. The increase in heart rate can be detected by measuring the pulse rate. The stroke volume also increases – this is the volume of blood pumped each beat. The total cardiac output can be calculated using the equation:

Cardiac output = stroke volume x heart rate

During hard exercise, the oxygen supply may not be enough for the needs of the muscle cells. When this happens, anaerobic respiration takes place, as well as aerobic respiration.

Fitness versus health

Fit people are able to carry out physical activities more effectively than unfit people. Their pulse rate is likely to return to normal more quickly after exercise.

But being fit is not the same as being healthy. Healthy people are free from disease and infection: they may or may not be fit as well. It is possible to be fit but unhealthy, or healthy but unfit.

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Investigating the Effect of Exercise on Heart Rate

  • Length: 401 words (1.1 double-spaced pages)
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Investigating the Effect of Exercise on Heart Rate

Aim

The aim of this experiment is to investigate how exercise affects
heart rate. I am going to record my resting heart rate, then exercise
for 30 seconds , then 1 minute and increase the period of exercise by
30 seconds until I am exercising for three minutes without stopping .
I will does this twice and take an average

Prediction

I predict that my heart rate will increase as a result of exercise. I
think that there will be a slight increase to begin with, but as the
body has to work harder I think that the heart will then increase at a
faster rate. This is because my body need s more oxygen because it is
burning energy through respiration which gives you energy from sugar
and oxygen and you need more of this for your muscles when you
exercise.

Sugar + oxygen =energy +oxygen+ carbon dioxide

Compared to when I am resting I need more food and oxygen

Variables

I will change the periods of exercise, I will measure my pulse rate
resting and after exercise and take an average. I will keep the
exercise, step ups, the same. To keep it a fair test I will rest
between each period of exercise to let my heart rate to return to my
resting heart rate.

Apparatus

Timer, step

Method

Collect apparatus

Record resting heart rate for 1 minute (arm, neck, temple, chest)

Exercise for 30 seconds and record your heart rate

Rest until your heart rate is as it was at resting

Repeat this for each period of exercise increasing it y 30 seconds
each time until your exercising for 3 minutes

Do this experiment 3 times to get an average

Results

Time minutes

1st pulse bpm

2nd pulse

3rd pulse

Average pulse

0

60

64

64

63

0.

How to Cite this Page

MLA Citation:
"Investigating the Effect of Exercise on Heart Rate." 123HelpMe.com. 11 Mar 2018
    <http://www.123HelpMe.com/view.asp?id=150092>.

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Related Searches

Heart Rate         Exercise         Minute         Carbon Dioxide         Pulse Rate         Chest         Average         Record         Repeat        




5

72

72

72

72

1

72

80

84

78

1.5

84

86

86

85

2.0

88

90

90

89

2.5

96

100

103

100

3.0

110

113

118

114

Conclusion

The results seem and accurate and have proven my prediction to be
correct. The results prove that the longer you exercise the higher
your heart rate as energy is being burnt through respiration which
gives your muscles energy from sugar and oxygen while exercising,
this obviously needs to increase when you exercise for longer periods
of time as your muscles need more energy to work longer

Evaluation

My results were quite accurate although there was one anomalous point
which didn’t quite follow the straight line pattern (circled on the
graph and table) this may because I rested to long and didn’t start
again on time. Because this was only found out from my averages I
couldn’t repeat it although if I had more time I would have liked to.
If I could improve this experiment I would use a more intense exercise
like running on a treadmill as I think this would be more accurate as
you can keep the intensity the exact same for each period of exercise



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