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

How Exercise Affects the Body.

Extracts from this document...


Biology Coursework How Exercise Affects the Body Heart rate is the number of heart beats per minute. You can measure it at pulse points on the carotid (neck) and radical (wrist) arteries. Press slightly on the pulse points count the beats for 15 seconds and then multiply it by 4 (15 x 4= 1 minute). Pulse rate is the pumping action of the ventricles of the heart, it is so strong that it can be felt as pulse in the arteries, far away from the heart so therefore pulse is the pressure wave that can be felt corresponding to the heart beat. Resting pulse in an adult is 60 to 80 beats per minute. Here are my results for this investigation. It contains results from two students: Student A- weight 55 kg Time (minutes) No. of Steps per minute First Results beats per minute Second results beats per minute Average Difference between the average b.p.m/ time 0 0 74 78 76 0 1 10 92 90 91 15 2 15 96 98 97 6 3 20 100 102 101 5 4 25 105 108 106.5 5 5 30 125 124 124.5 18 6 35 145 140 142.5 18 7 40 156 151 153.5 11 8 45 165 162 163.5 11 9 50 - 168 168 5 Student B- Weight 62 kg Time(minutes) ...read more.


They were using this as fuel which the body already had. Between the 4/5th minute student A went over the creatine phosphate supply and went into anaerobic respiration which can be seen on the graph, that the heart beats of student A has increased at a faster rate. At the start it was a steady 5-6 beats per minute increase but as it went in to the 4/5th minute the difference started to increase from 5 to 18 which indicates that Student A has gone into anaerobic respiration his heart beat per minute has increased but, towards the 8/9th minute the rate of increase of the heart beat has decreased, which can be seen on the table, from 11 to 5 b.p.m which suggests that student A is now respiring aerobically and the body is repaying the oxygen debt which occurred during anaerobic exercise. However, student B's heart rate is increasing at a steady rate in whole of the experiment. Even though the student B has a steady rate of increase and it went into anaerobic and aerobic respiration just like Student A but, student B only went up to 7 minutes of exercise which suggests that student B is less fitter than the student B. ...read more.


Evaluation: Although I believe this experiment has produced fairly valid results, I am not sure that the information provided was particularly accurate. For instance, I cannot be sure that the step-up exercise was done at the same rate throughout the experiment. Also, I am not sure how many seconds interval rest was taken in between by student A and B and if it was kept exactly to that timing. On the table first result for Student A does not show the b.p.m. at the 9th minute, as he has shown it in the second result column, it does not give me a fair average as I had to divide it by one instead of two. If I were doing this experiment myself I would have to look closely at the method of exercising used by student A and B. I think that exercising on a piece of equipment like a running machine would produce more accurate results because I would be able to guarantee that the exercise remained constant throughout this experiment. Finally, an actual 'pulse-meter' might have helped the experiment to be more accurate. This is simply strapped round the chest of the exercise and it measures your current heart rate. I believe that this would produce a more accurate heart rate and it would not be necessary to have breaks during the exercise. ...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

    Biology Revision notes - Human Biology

    5 star(s)

    Inherited characteristic To receive a characteristic from one's parent by genetic transmission. Inherited disorder A disease or disorder that is inherited genetically (From our parents) Monohybrid cross A monohybrid cross is a breeding experiment between P generation (parental generation) organisms that differ in one trait.

  2. Marked by a teacher

    Artificial Cardiac Pacemakers

    5 star(s)

    It is a small, electronic device that is implanted beneath the skin. It sends electrical signals through the heart that regulate an irregular heart beat or speed up a slow heart beat.13 An artificial pacemaker consists of two basic parts.

  1. Human biology short notes

    * The rejection is due to the foreign tissues in the body * As a result the immune system tries to attack and destroy the foreign proteins * If rejected the transplanted kidney will malfunction * Immunosupperssvie drugs can betaken to reduce the rejection rate Advantages of Kidney Transplant *

  2. An experiment to investigate the rate of anaerobic respiration of yeast in various respiratory ...

    than the first half (between 0 and 6 minutes). The graph seems to follow a linear pattern. Looking at my graph for Maltose I can see that the rate of respiration is again fastest between 6 and 9 minutes. Similarly to the Glucose graph, the rate of respiration is faster in the second half (between 6 and 12 minutes)

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

    to put the blood drop Step3- I placed the laucet on the finger tip of the volunteer and pressed the finger tip a little to ensure more blood flow. Then I pressed the button which released the needle to prick the finger Step4- As the blood drop appeared on the finger tip.

  2. human body system

    To get ride of carbon dioxide and waste products in the body. Air we breath in Air we breath out Oxygen 21% 16% Carbon dioxide 0.08% 4% Nitrogen 78% 78% When we breathe we should breathe through the nose because the nose contains special linings that warm, moisture and filter the incoming air.

  1. Investigate the nature of heat loss in the human body.

    When cool air makes contact with the body, it becomes warmed and therefore less dense carried away by convection currents created, as the less dense air rises. The faster the air moves the faster the rate of convection. Radiation Radiation is the emission of heat from a body to the air.

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

    148 The result above is an outlier, due to the fact that his recovery time is much lower than the other person for that group. Due to this result, there does not really seem to any particular correlation between the two variables.

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