• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2

# Effect of Exercise on Heart rate.

Extracts from this document...

Introduction

AS Coursework Biology Plan Skill A and B: Effect of Exercise on Heart rate. Aim: To devise an experiment that can investigate the effect of exercise on heart rate. Independent variable: The exercise I will use is running. The variable I am going to manipulate is the speed. I will change the speed at different constant intervals from 6 kph to 16 kph. I will use the speeds of 6,8,10,12,14,16 kph (kilometres an hour). I will use this range so that my maximum heart rate I reached and my heart rate will change on the minimum speed. I will use a treadmill to run so that I can use a constant accurate speed which I can control. This is unlike a rowing machine or step cycling machine because you determine the speed on how fast you row or cycle. However with a treadmill the speed is determined by the treadmill. ...read more.

Middle

Control: The control in the experiment will be my resting heart rate. Dependent variable: The variable I will measure is the heart rate. I will use a heart rate monitor which will measure my average heart rate per minute. I will use a chest strap and a reader which are on the treadmills to do this. I will measure the heart rate at the different speeds for 2 minutes and record the final heart rate at the end of the 2 minutes. I will work with a partner so someone else can record the data while I do the exercise. I will use 2 minutes because I found it is the minimum time but the optimum accuracy. I found this by running at 12 kph for one minute, two and three minutes. I found that there was not a great enough change in heart rate for one minute but at two minutes there was. ...read more.

Conclusion

* I will make sure I do not become dehydrated during exercise and I drink plenty of water to prevent this. Prediction: I predict that as exercise intensity increases heart rate will increase. I predict that the maximum heart rate I will be able to reach is roughly 215 bpm because the average safe heart rate is 220 bpm minus your age. I predict a graph similar to this with the results levelling off towards the higher intensities as maximum heart rate is reached. Factors that effect heart rate: 1) With increase in exercise there is an increase in the rate of respiration in the muscles so heart rate increases to supply the muscles with oxygen (which is carried in the blood) required for respiration and to remove the CO2. 2) Increased flow to the muscles and the skin is achieved by reduced blood flow other organs such as the intestines and kidneys. 3) Cardiac output is adjusted according to the demands of the body. Tom Keeling ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related GCSE Humans as Organisms essays

1. ## Is the MMR vaccination safe?

5 star(s)

After much study of the immune systems response of antibodies to the amount of antigens in vaccinations, he claimed that theoretically a child's immune system could respond to 10,000 vaccinations at a time and that if 11 vaccines were given to infants at one time only about 0.1% of the immune system would be used.

2. ## Effects of Exercise on Cardiac Output.

muscle cells, much quicker, so the heavy breathing rate in males will begin to decrease because the heart, lungs and muscles in trained males have become more efficient at using oxygen through regular exercise. Which results firstly in a much steeper decrease in heart rate, followed by a steady decrease back to the resting heart rate.

1. ## Analyse and evaluate the effect of exercise on the ECG trace

Therefore the systolic blood pressure response to standard strength training is similar to that of endurance exercises, and well within acceptable limits for physical activity. (Brooks et al 2001) Blood pressure studies Some studies on the heart rate found that strength training appears to produce cardiovascular responses similar to aerobic exercise.

2. ## Investigate the effect of exercise on our heart rate.

This process is called AREOBIC RESPIRATION because it uses oxygen. During respiration, we use up foods and oxygen. This produces carbon dioxide and water and gives us the energy. This is like fuels burn. Foods and fuels react with oxygen.

1. ## Investigating the effect of exercise on heart rate.

Weather conditions may change from day to day, and so therefore this could affect the heart rate for example on a hot day our heart beats faster then it does on a cold day. The same person will carry out the exercises each time.

2. ## The Effect of Substrate on

Mixture Volumes: All volumes and concentrations of yeast and the substrates will be kept constant so that all of the results can be compared as they will all have taken place in the same amounts. Having different volumes and concentrations will change the rate of respiration due to there being more or less molecules that are able to react.

1. ## The effect of exercise on gas

These then divide again 22 times until the alveoli are reached. The alveoli are microscopic blind-ended sacs and are the site of gas exchange between the atmospheric air and blood. There are around 3-6 x 108 alveoli in the lungs and each alveolus is made up of a single layer of epithelium.

2. ## The aim of my investigation is to measure the effects of BMI (body mass ...

Call 999 Stitch Pulled muscle, ensure they do not drink too much water before running. Ask them what they have eaten or drank earlier the investigation. 2 4 Open air passage; apply enough air to the long as possible, supply water.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to