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

An experiment to determine the effect of caffeine on heart rate

Extracts from this document...

Introduction

Rimsha Arif IB1-5 An Experiment to Determine the Effect of Caffeine on Heart Rate RESEARCH QUESTION:- Does the effect of an increasing volume of caffeine in an energy drink cause a corresponding increase in heart rate? HYPOTHESIS:- The heart rate should increase proportionately to the amount of caffeine present in the different amounts of the energy drink that is used. Caffeine is known to cause tachycardia, which is a disorder of the heart rate (pulse) because it beats too fast. VARIABLES:- Variable Measured Method of measuring/controlling variable Independent variable The volume of caffeine in the energy drink 25ml, 50ml, 75ml, 100ml and 125ml of Bison (energy drink) will be used for each experiment. The volume is measured using a measuring cylinder. Dependent variable The number of heart beats per minute of the person This will be counted by a friend/family member by starting the stopwatch and counting the number of beats in a minute. Controlled variables The person taking the heart beat of the person doing the experiment The same person will be used so that the experiment stays accurate. ...read more.

Middle

Continue doing so until all volume samples have been drunk. Repeat steps 1-6 five times over a course of five days. A total of 5-6 hours on each day will be dedicated towards this experiment. The data can be used to calculate an average, which makes the experiment more accurate. ________________ DATA COLLECTION AND PROCESSING:- Raw Data ? A table to show the heart rate after drinking a certain volume of an energy drink with a certain amount of caffeine. Amount of energy drink (ml) Amount of caffeine (mg) Trial 1 - Heart rate (+/- 1.0 beats/minute) Trial 2 - Heart rate (+/- 1.0 beats/minute) Trial 3 - Heart rate (+/- 1.0 beats/minute) Trial 4 - Heart rate (+/- 1.0 beats/minute) Trial 5 - Heart rate (+/- 1.0 beats/minute) 0 0 69 68 74 67 71 25 6 73 74 78 69 75 50 12 76 72 81 74 79 75 18 82 85 86 78 83 100 24 87 86 89 84 88 125 30 90 89 91 87 92 Processed Data ? Amount of caffeine (mg) ...read more.

Conclusion

The heart rate wasn?t exactly based on the amount of caffeine present in my body. For example, I found myself doing other activities that increased my heart rate, such as lifting heavy objects and going up and down the stairs. In some cases, I did this a few minutes before it was time to measure my heart rate, therefore getting an inaccurate set of results. This could have been avoided if I sat down in one place for an hour, making sure that my heart rate was only affected by the caffeine. In order to get more reliable results, larger amounts of caffeine should have been used, therefore more energy drinks should have been drunk. This would give a larger variety of data, which would make it more interesting to interpret and conclude. For example, a total of 100mg of caffeine should have been used, which meant that a total of about 4600ml of energy drink would need to be drunk. This may not have been possible as drinking that much energy drink isn?t exactly good for a person?s health, but it would be interesting to see what the results would be. ...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 ...

    = 11.40 seconds One Standard Deviation "Increment Two 45 seconds"= 19.03 seconds One Standard Deviation "Increment Three 90 seconds" = 18.48 seconds Sample Calculatoin for T-Test 1. Identify the Null hypothesis The Average Heart Rate between increment one and increment two are not significantly different 2.

  2. The effect of toliet cleaning products on E-coli ...

    As mentioned with the viscosity of the different products not all cleaners appeared equal. Samples of bleach and King White both consisted of a strong smelling vapour; additionally both use child proof seals. Harpic and Duck toilet cleaners where pink and blue in colour respectively and smelt quite inviting (like flowers).

  1. Lab of genetics.You will determine your phenotype and try to determine your genotype for ...

    Record your phenotype and genotype in the table. * Some individuals are born with 6 or more fingers on each of the hand. This is a trait caused by the dominant gene P. Individuals with 5 fingers on each hand have the recessive genotype pp.

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

    � Time of measuring: If the apparatus remains longer, it means the plant has more chance of transpiring. � Humidity: Within the high humidity, plants would not seem to lose water to their surroundings as there is already much water in the air.

  1. Research Question (RQ) How does the position of the arm (cuff) in relation ...

    They were able to relax into this position and stand comfortably for the duration of these experimental trials. The subjects appeared to find this trial a lot easier and less tiring. Data Processing and Presentation: Table 3: The Total Average Systolic (SYS)

  2. Allelopathy. Open Investigation Will increasing the number of allelopathic sunflower plants effect the ...

    present on all bean plants - Petals are developing on all sunflower plants - Bean plants are green -The sunflower plants are growing steadily and are healthy and green Table cont. 40 - Plants are green and growing vertically - Bean plants have 5 leaves - Leaves are big -

  1. How the Heart Works

    Like all other muscle the cardiac muscle is capable of contracting and relaxing but the specialized cells can also carry an action potential (conduct electricity), rather like the neurons that make up the nervous system. Some of the cells that make up the cardiac muscles can even generate an action potential automatically which is what makes your heart beat.

  2. Biology Heart Rate Lab. What are the effects of decreasing the amount of ...

    Trial 4 of heart rate measured for a duration of 3 minutes after different amounts of water consumption. Amount of Water Consumed (mL � 10mL) Number of Heart Beats (beats � 2 beats) 100 246 500 234 1000 225 1500 225 2000 204 Table 5.

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