• 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...

Introduction

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.

Middle

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.

Conclusion

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. Research Question: Does the duration of exercise have an increased effect on a persons ...

    Tell the 10 students to find their pulse. i. For purposes of consistency the pulse area will be the neck ii. Place two fingers on the center of your chin iii. Run your two fingers down until you feel your Adams apple iv. Slightly move your two fingers to the right applying pressure v.

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

    Many people become vegetarians and vegans for a combination of the reasons stated above.(5) 5 00511-062 08/09 1.2.5 What are the advantages of becoming a vegetarian or Vegan? [5] There are a number of advantages to becoming or being a vegetarian or vegan.

  1. What is the effect of different body positions i.e. lying down, sitting and standing ...

    143 102 9 169 82 10 92 64 Table 3: The systolic and diastolic (mmHg) pressure for participants in a sitting down position Participant Systolic (mmHG) (�3mmHg) Diastolic (mmHG) (�3mmHg) 1 88 58 2 101 64 3 116 65 4 116 64 5 101 61 6 102 77 7 88

  2. Biology - Observing the Process of Guttation

    10.0 Day 12 (3 June 2007): Plant Beads of water exuded Height of plant (in centimeters) A 4 15.9 B 4 15.5 C 2 15.7 D 0 11.8 E 0 11.6 F 0 11.5 Day 13 (11 June 2007): Plant Beads of water exuded Height of plant (in centimeters)

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

    Result Table 1: raw data for the distance (� 0.1 cm) that water uptake by four different plants (*Rubiaceae, Verbenaceae, Oleaceae, and Rutaceae) has travelled during one minute Note: the measurement of potometer is the same as a ruler. Thus uncertainties are based on � half of the place value

  2. Reaction Time

    A third example is that the authors of an article in Perceptual Motor Skills, based on a review of reaction time research, concluded that "reaction time must be considered a skill dependent upon experience and learning." 2 All these researches clearly indicate that one can improve one's reaction time and that carrying out sports is one method to do so.

  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. Investigating the Effect of Increasing Exercise in Aerobic Respiration

    62 54 76 71 CO2 produced (± 10 μmol) 620 540 760 710 Table 2: The results for the effect of 1 minute of exercise on CO2 production Calculations: Conditions Before exercise After 1 minute of exercise After 2 minutes of exercise Calculation (640+680+560+620+540)/5 (760+710)/2 (840+970+660)/3 CO2 (μmol)

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