• 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...

Introduction

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.

Middle

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.

Conclusion

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

    Artificial Cardiac Pacemakers

    5 star(s)

    This means the pacemaker is only active when it needs to be, when the heart rate is too slow. This type of pacemaker is called a demand pacemaker.16 Most pacemakers are internal (surgically implanted inside the body), however some are external (worn outside the body)

  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. Human biology short notes

    * The donor must be of the same blood group as of the patient * Both the patient and donor must under go surgery * The donor must have similar kidney tissue as the patient Rejection * Rejection is when the body reacts to transplanted tissues (Kidney)

  2. How Does Exercise Effect The Body?

    I will use an eight-minute resting period in between each exercise. Table Of Results, Firstly I had to time my stationary heart rate; I did this three times and worked out an average: 1st Heart Rate 2nd Heart Rate 3rd Heart Rate Average 70 Bpm 68 Bpm 70 Bpm 69.5

  1. Investigating Oxygen Debt during aerobic & Anaerobic exercise.

    Her 2nd and 3rd runs were much more similar and they are closer to the average which I calculated. Lucy's pulse rate was a lot lower than Amy's yet during the exercise her pulse rate increased a lot more, This may be because Lucy was outing in more effort than

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

    When water loss is through the skin and mucous membranes of the mouth and respiratory system it is termed insensible water loss. The rate of evaporation is inversely related to relative humidity, the ratio of the amount of moisture in the air to the maximum amount it can hold at any given temperature.

  1. Effects of Exercise on Cardiac Output.

    The effect of exercise on the heart is quite obvious when heart rates are compared between the fittest and unfit individuals. The trained individuals will have a lower heart rate at rest (perhaps as low as 50 beats per minute in some cases)

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

    The larger veins contain valves that maintain the direction of blood-flow. The flow of blood in veins is helped by contractions of the skeletal muscles, especially those in the arms and legs. When muscles contract they squeeze against the veins and help to force the blood back towards the heart.

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