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

How Exercise affects heart rate

Extracts from this document...

Introduction

How Exercise affects heart rate Aim My aim is to find out how exercise affects heart rate, I am going to find this out by doing Sit ups and taking my pulse and seeing how much it increases / decreases as I do sit ups for a longer amount of time. To get a good pulse I am going to take my pulse over 15 secs and times it by 4 this will give me a closer pulse than waiting for a minute because it would then increase / decrease as I measured it. Safety I am going to make this experiment safe by: 1. Warming up and down 2. Not over doing my self 3. Taking a rest after each time of sit ups 4. Not doing sit ups near a wall or table. ...read more.

Middle

The result of the muscles not getting enough oxygen leads to a by-product of Lactic acid, you can feel this when your are doing exercise by a burning sensation in your muscles. This can be dangerous so when you get a build up of lactic acid you should slow your rate of exercise and rest till the sensation subsides. My Results Exercise time In min Resting heart rate Pulse 1 2 3 Averages 1 67 68 68 100 82 2 68 100 116 110 112 3 68 136 128 116 127 4 68 148 143 147 146 5 67 157 155 153 155 My results are shown in the graph, the one average Anonymous result is circled. This shows my results are precise and accurate, this means my results are accurate enough to make a firm conclusion. ...read more.

Conclusion

Back Ground Knowledge When your heart muscles contract they force the blood into your arteries. Each beat of the heart pumps the blood along under high pressure. The artery walls are elastic and stretch to take the blood. Then they contract and bounce back to force the blood along. This bouncing back can be felt and is called the "PULSE". The rate at which blood is pumped around the body depends on the heart rate, During exercise, the cardiac out-put must be greater than while at rest. This is because the muscles need a constant supply of Oxygen to create the ACP, which is needed for the contraction of the muscles. Also the blood needs to carry the Carbon dioxide away from the muscles. During exercise the muscles need food and oxygen while getting rid of carbon dioxide so the pulse beats faster to make this all possible. ?? ?? ?? ?? Luke Hammond ...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

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. Marked by a teacher

    Is the MMR vaccination safe?

    5 star(s)

    see how many people have got confused over the safety of the MMR vaccination and naturally any issue regarding children's health is always a very emotive topic. Those who argue that MMR is not safe's main argument is that when a child's safety is at possible threat, absolutely no risk should be taken.

  2. Effects of Exercise on Blood Sugar Level and Pulse Rate.

    Insert a strip into the glucometer onto which the blood drop has to be put. Step3- Place the laucet on the finger tip and press finger tip a little to ensure more blood flow. Then I will press the button which will release the needle to prick the finger Step4-

  1. Investigate how exercise affects my heart rate.

    After, I will measure my heart rate again for 1 minute. 5. Then I will allow my heart rate to return to resting level and I will time the recovery period and record it. 6. I will then increase the time duration of the exercise to 2 minutes. 7.

  2. Effects of Exercise on Cardiac Output.

    female's during mild exercise, it is easier for the male's heart rate to return back to 'normal'. During anticipation the heart rates both increase more than the mild exercise, although the female's anticipation heart rate is slightly higher (an extra 1 beat per minute), this is because adrenaline is being released from the adrenal glands (situated above the kidneys)

  1. How exercise affects heart rate.

    In the preliminary experiment, I only took 2 sets of results just to see what the outcomes would be like. I did the exercise at 1 step-up per 3 seconds, and 1 step-up per 2 seconds. My results were as follows: Resting Pulse Rates: 74bpm, 76bpm, 75bpm Exercise 1:- After

  2. How does exercise affect your heart rate?

    we want to get a wider range of different types of fitness levels to get more reliable results. To make my experiment safe I will make sure that the people doing the exercise have appropriate shoes and that they tuck all lose items of clothing in to be safe while doing the exercise.

  1. How exercise affects heart rate

    Because the muscles are not getting enough oxygen they start respiring anarobically, that is, without oxygen. This type of respiration produces much less energy then aerobic respiration and produces lactic acid. Lactic acid is what causes cramps and when we stretch after exercise it is to get our muscle back

  2. How exercise affects the pulse rate

    If the level of carbon dioxide builds up then this is monitored by the chemoreceptors located in the brain. This makes adjustments in the breathing rate because you need more oxygen to replace the carbon dioxide. The heart rate increases to carry the waste away and replace it with oxygen quicker.

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