The affect of Caffeine on pulse rate Essay Example for Free

The affect of caffeine on whim dictate EssayStimulants are a class of drug that boosts, alternates and increases your faculty levels and they practise of the nervous system. Caffeine is in presents, such as Coca-Cola, tea and coffee, these are c eithered caffeinated drinks. Caffeine is not unremarkably recognised as a drug to near. Caffeine has an answer on your detectt rate, (this is how fact your hear beats) Caffeine is able to change the way your body and mind works Chocolate is known to oblige traces of caffeine in it alsoThe aim What is the point this try out-My aim in this experiment is to read what set up caffeine is prone to on the warmness rate, Also to compare someones punk rate who has consumed caffeine to someones who hasnt. This should give us a developed idea to the effects of caffeine. In this experiment there go forth be several versatiles-The independent variable-this is the variable I will be changing, this is the number of people of which are drinking the caffeine and the ones who are not. The Dependant variable-This is the variable we measure, Im measuring the persons heart rate, then working discover the difference to confront what effects caffeine is likely to boast on the heart rate. Controlled variables-The following variables I am memory the identical-Room temperatureThe volume of the drinkNo-one will consume caffeinated food or drinks beforehand.From what information I incur collected I predict that the pulse rate of the people drinking the caffeinated drinks will have an increased pulse, because as research plants, caffeine is a stimulant. Therefor the foresight of an increased heart rate when caffeine enters the blood stream seems good. I also think after a certain hitch of time, when the caffeine has left the persons system that the heart rate will lower again.Caffeinated Or Not?What will I do? How will I do it?Method- you will needSix cupsA bottle of a caffeinated drinkA bottle of a de-caffeinated dr inkHeart rate varan or a simple stop watchA fudge of results to evince your data move- What am I going to do?1) train 6 people to suck in sectionalisation in the experiment.2) Make each person sit down for 15 transactions in order to calm down their heart rate. 3) Pour the caffeinated drink into three cups of a 300 cm cubed volume. 4) Pour the de-caffeinated drink into another(prenominal) 3 cups of the same size. Making sure that the people participating in the experiment do not see which drink they are organism given( Blind testing) 5) Take each persons heart rate and record it in a table. This is the scratch byplay point 6) Give each person their drink, until now making sure you carry out a blind test. 7) Take each persons heart rate every 30 seconds continue to do this for a further 5 minutes. 8) by and by 5 minutes, take one final heart rate, this will help with your results. 9) Create a table of results to hold your information in, make sure the table is clear to re ad and easy to understand. 10) Work out the difference between everyones heart rateMethod 2- Shortened version-1) Prepare six people for the experiment by making each person sit down for 15 minutes to calm their heart rate. 2) Pour a caffeinated drink into 3 polyester cups of a 300cm cubed volume. 3) Do the same with the de-caffeinated drinks.4) Label the caffeinated drinks a and the de-caffeinated drinks b, so you wont mix them up, but dont let the participants know which label represents which drink. 5) Take each persons heart rate this is your starting point. 6) Give each person their drink, at random.7) Take each persons heart and record it in a table of results, do this every 30 seconds for a further 5 minutes. 8) With your results change in your table and work out the difference between the heart range, this should indicate the heart rates affected by caffeine.About my graph-The graph I used for this experiment is a line graph it shows various results of different pupils hea rt rate. The lines on the graph are all unique some have a sudden increase in heart rate whilst others have not. Pupil one- which is the pink line had a home rate of 72 this remained uninterrupted end-to-end the experiment, only rising and falling by a small few. However pupil 2 had a base rate of 78 but after drinking the drink at around 8-9 minutes the heart rate increased dramatically. Overall 3 results (pupils 1,3 and 5) practically remained the same, whilst the other three (pupils 2,4 and 6) had several increases whilst the drink being in their system. Summing up my results-We know from research that caffeine is a stimulant and stimulants affect the measure of your heart. So the three results that have a big increase in their heart rate, seem to show that they had caffeine in their system. However we did discover an anomaly, after 8 minutes pupil twos heart rate had a dramatic increase. This may well have been the caffeine but its more(prenominal) likely to have been caus ed by something called a placebo effect.This is when the pupil consuming the drink in the experiment got excited and this is what made the sudden increase in the pupils heart rate. After two minutes pupil fours heart rate increased also, however this time, the increase remained constant for a further two minutes before starting to drop again. This state a more obvious term of the effect of caffeine. The graph clearly shows which results are the ones effected by caffeine, and the ones which are not. Amendments- what I tidy sum I do better next time?In future experiments like this one, I think I would make sure that no-one involved in the experiment eats or drinks both caffeinated products before taking part in the experiment. This ensures us that their heart beat is at its normal pace. Because talk and movement can affect how our hearts beat I would also make sure that everyone in the experiment sits down for a lengthy period of time that was done before.This helps the heart lowe r to its base rate. Our results werent really valid because we were unable to control our controlled variable, this may be because the person who had consumed caffeine insisted on talking to everyone else, so this would have increased the other peoples heart rates also. In future experiments we can delay this by keeping people apart after taking part in the experiment, this way they cannot influence each others behaviour. Research has shown us that caffeine on average takes around 45 minutes to enter the blood stream, so we cannot be certain our results were callable to the effects of caffeine.This could be amended by measuring the pulse rate over a longer time span, so the caffeine had longer to affect our pulse. In the experiment I chose to measure my pulse over a period of two minutes, next time to show more valid and reliable results I would measure my heart rate over shorter intervals. Finally one more improvement would be to test more caffeinated drinks with our pulses, so th en we can rule out the thought off the results being due to glucose or so on, we then can be sure its definitely caffeine thats increasing out hear rate. Conclusion- what do I think?From this experiment I can conclude that caffeine can affect different people in different ways, depending on their diet, devolve on and size. Whether they are used to drinking caffeine constantly and how much their body can take of it. My prediction on average was correct as I suggested that the people with caffeine in their system were most likely to have a higher heart rate. This was mainly correct, but I was shocked to hazard out that my results were not valid due to the length of time caffeine takes to enter the blood stream.An voice of caffeine being used may be when an athlete drinks a caffeinated drink before they take part in their sporting event, the effect would be the increase in their pulse and more energy would be dispersed in the body. Personally I dont think this is fair, as I previous ly said caffeine effects different people in different ways, so caffeine could have a strong effect on certain people, whilst it has a less strong effect on others. This affects the balance of the game and its not natural energy being used in the event. This could be classed as cheating.