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

To investigate how aerobic exercise affects the heart rate

Extracts from this document...


Research Question To investigate how aerobic exercise affects the heart rate of a 16 year old male. The aerobic exercise I will be using to conduct this experiment is jumping jacks, commonly known as star jumps. It is a physical jumping exercise performed by jumping to a position where both legs are spaced out from each other while hands are placed over the head like the shape of a star, and then returning to the original position of both feet together with arms by the sides. DESIGN Variables Independent variable: Length of time to perform jumping jacks Dependent variable: Pulse rate - the time between heart beats (after every minute) Controlled variables: a) Physical status * Height * Age * Gender * Weight * Dietary intake before exercise * Fitness level * Body size b) Time taken for each jump (1 second) c) Pulse rate before exercise (90 beats per minute) d) Repetition (5 times for each value) e) Time of exercise (4 pm) f) Conditions in environment * Temperature in environment * Clothing and shoes Prediction Heart rate is the rate at which the heart beats per minute. Heart rate is measured by monitoring the pulse of a person. Every time the heart beats, it pumps a quantity of blood into our circulatory system. ...read more.


This rhythm influences body functions such as blood pressure, hormone levels, heart rate and body temperature which are all factors that play a role in determining when the most appropriate time for exercising is. My test subject has chosen 4 pm to be the most appropriate time for him to engage in physical activity. This will therefore allow the results to be at the highest quality as possible. Conditions in environment Temperature in environment4 Temperature in the environment can be kept constant by keeping the place where the activity is carried out the same, which is at room temperature (around 24�). This is because the body adapts differently to different temperatures and this could affect the heart rate of the subject. Clothing and shoes There will be no changes in clothing and shoes. They will be kept the same throughout the experiment. The test subject will wear a cotton t-shirt, sport shorts and trainers. This is because the weight and material of the clothes and shoes may affect the body temperature of the test subject. DATA COLLECTION AND PROCESSING Raw data table Length of time to perform jumping jacks (min) � 0.5s Pulse rate (bpm) � 1 bpm attempt 1 attempt 2 attempt 3 attempt 4 attempt 5 0 90 90 90 90 90 1 144 140 142 146 145 2 146 154 148 150 152 3 149 160 162 155 160 4 154 ...read more.


This may have affected the results, although not that significantly. Quality of data The data obtained from the experiment was sufficient and valid for analysis. Throughout the experiment, I did not encounter any significant anomalies. Hence, the quality of data can be considered to be pretty good. Precision and accuracy of data The data obtained is quite precise. The standard deviation suggests that the data is reasonably accurate as they are a less than 5. However, this does not necessarily mean that the data is exact as the experiment only measures five samples. Improving the investigation The experiment as a whole can be improved if more time is allocated for it. With ample time, the reliability of data can be improved as the experiment can be conducted several more times for each time value to improve its accuracy. Also, with more time, the results can be more precise as each the experiment can be conducted over a longer period of time, thus giving the test subject plenty of chance to rest, so will be more efficient. Also, the gap between the time taken after the experiment and before measuring the pulse rate can be reduced by making the test subject perform the exercise nearer to the table so as to eliminate the walking distance, therefore reducing the gap time. Apart from that, I think that the experiment went pretty smoothly. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. Biology - Observing the Process of Guttation

    The green bean sprouts emerged from beneath the soil on Day 4, one day before those grown in the exposed containers (shown in Figure 12 below). Figure 12. The growth of green bean sprouts in exposed containers D, E, and F is shown in this graph.

  2. Testing the effect of characteristics of leaves on the transpiration rate of * ...

    The water uptake by roots would not be the same as by branch or stem. The other is whether water uptake can necessarily mean the water loss or evaporation, which is what really transpiration means. Even if two measurements are different, it can be inferred that the large amount of water uptake leads to that much amount of water evaporation.

  1. How Does Exercises And Tea Affect Heart Rate And Blood Pressure rate as ...

    blood pressure with its two types (Systolic and Diastolic), to illustrate better the patterns of the experiment... Pulse Rate: my Pulse Rate at rest were: 70 Pulse Rate Percentage Of Change � 0.1% General form to get the percentage change of the pulse rate between a t rest and after

  2. Should Animals have the same rights as Humans? Both animals and humans exhibit behaviours ...

    Hugging or kissing may mean one thing if a human does it, but something entirely different if a chimp does it-just like appearing to grin is actually a sign of aggression in a chimpanzee. en.wikipedia.org/wiki/Jane_Goodall What appears to separate humans from animals seems to be not the presence of something

  1. The effect of pvc piping on the breathing/heart rates of male year 12 students

    - Comparison of the breaths per minute of the hearts of male students age 16-17 trough different lengths of PVC piping. Regular breathing 25cm 50cm 75cm 100cm Average breaths per minute 21 18 16 15 12 Standard deviation 5 3 3 4 2 2.3.1- Processed data graph 1 (figure 3)

  2. biology extended essay - How different diets: vegetarian, vegan and a meat centered diet ...

    Lacto vegetarian diet 2. Lacto-ovo vegetarian diet 3. Ovo vegetarian diet Lacto vegetarian diet This a vegetarian diet that avoids eating meat but does allow the consumption of diary products such as milk, butter, cheese, creame and yogurt etc. This diet does not however allow the consumption of eggs eventhough it is a diary product.

  1. Biology lab What effect does age have on the breathing rate and heart rate ...

    There appeared to be little difference in breathing rate during exercise with the age of the boys. We are treating the results of the 15 and 16 year old as anomalous. Evaluation: During the investigation I observed colleagues also working on the investigation lacking precision in watching the stopwatch/phone carefully

  2. An investigation on the changes in tidal volume and vital capacity of lungs before ...

    possible to see to what extent the values deviate from the mean value. It is calculated by using the following equation: Standard deviation = Standard deviation of the mean tidal volume before exercise: = = 571.44 100 Standard deviation of the mean vital capacity before exercise: = = 929.36 100 Table 2.

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