The Low Down On Caffiene Essay Research — страница 4

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Treatment#5 100mg caffeine pill 4) For each block, give the same diet every day for 90 days. 5) For each block set all reasonable variables the same (including exercise) 6) For each block, give 1 pill of randomly selected treatment to each subject every day for 90 days. Distribute the pill in a double blind fashion (subject and distributor doesn?t know which pill is being given ? to reduce bias). 7) On every 7th day (7th day, 14th day, 21st day, 28th day, etc.), give out dependency questionnaire (asks craving toward treatment on a 1-10 scale) to each subject. Take until the 90th day. 8) Record results according to each block. 9) Starting on the 8th day following by increments of 7 days (8th day, 15th day, 22nd day, 29th day, etc.), measure each subjects pulse rate. Measure pulses

when subjects wake from sleeping at 7:00AM (resting pulse).Take until the 90th day. 10) Starting on the 9th day following by increments of 7 days (9th day, 16th day, 23rd day, 30th day, etc.), take urine samples from each subject to measure dehydration. Take until the 90th day. 11) Record results according to each block. 12) Gather results for each block and each of the three tests (15 sets of data). Procedure for significance tests 13) For the dependency test carry out 4 ?2 sample z-tests?. Each block will be set against the control group. Here are the null and alternative hypotheses for all 4 of the tests: U1=Mean of control?s dependency level U2=Mean of block?s (all non-control block?s) dependency level Ho: U1=U2 The control group?s mean dependency level equals the block?s

mean dependency level. Ha: U1*U2 The control group?s mean is less than the block?s mean dependency level. (Caffeine causes dependency) 14) For the pulse rate test carry out 4 ?2 sample z-tests?. Each block will be set against the control group. Here are the null and alternative hypotheses for all 4 of the tests: U1=Mean of control?s pulse rate U2=Mean of block?s (all non-control block?s) pulse rate Ho: U1=U2 The control group?s mean pulse rate equals the block?s mean pulse rate. Ha: U1*U2 The control group?s mean pulse rate is less than the block?s mean pulse rate. (Caffeine speeds up nervous system) 15) For the dehydration test carry out 4 ?2 sample z-tests?. Each block will be set against the control group. Here are the null and alternative hypotheses for all 4 of the tests:

U1=Mean of control?s volume of urine U2=Mean of block?s (all non-control block?s) volume of urine Ho: U1=U2 The control group?s mean volume of urine equals the block?s mean volume of urine. Ha: U1*U2 The control group?s mean volume of urine is less than the block?s mean volume of urine. (Caffeine dehydrates the body) 16) For all tests set alpha to .05 (alpha = .05). 17) Draw conclusions from each significance tests (Probability is either below or above the alpha). 18) For each of the three main tests (dependency, pulse rate, and dehydration), compare and contrast all the significance tests for each block and make a master conclusion relating the significance tests to each other. ? The experiment is completed ___Statement of Hypothesis Based on research of caffeine and other

scientist?s previous experiments, caffeine will cause a slight dependency (my probability will be larger than my alpha) in human subjects. In Caffeine Consumed (Walton), it says that caffeine has been found addictive in many studies. Furthermore, based on reading from Robert Winston?s ?Withdrawal Caffeine? experiment, he believes that caffeine is the most widely consumed behaviorally active substance in the world, chronic caffeine intake only appears to have minor negative affects on health, and that is why government regulatory agencies do not impose restrictions on it. He has experimentally proved this. Numerous others have found caffeine guilty of producing withdrawal symptoms and other forms of dependency also. Caffeine?s reason for being part of an early morning ritual for

millions of people around the world is its ability to wake up one?s body. It has been scientifically proven many times that caffeine accomplishes this task by speeding up the nervous system (Anderson ?Decaff Anyone??). Therefore, caffeine will increase pulse rate (probability greater than alpha). Although not many articles on the effects of caffeine on the digestive system were read, one article analyzed this subject very well. Powers Sk, ?Caffeine and Endurance performance? it asserts that caffeine is a major diuretic. The caffeine goes through one?s system offering little nutritional value, and exiting the system by dehydrating it. Hence, caffeine in large amounts will create dehydration on the digestive system (probability greater than alpha). Because of extensive research and