Caffeine Manipulation

According to the results, the columns of caffeine in figure 1, of this experiment the hypothesis for caffeine is partially accepted. There is an increasing trend in the change of pulsation rates with increasing

Caffeine’s mental appeal is just as trendy as its physical purpose. Caffeine has been proven to stimulate the central nervous system. Caffeine stimulates the Central Nervous System at high levels, like the medulla and cortex, and even has the ability to reach the spinal cord in larger doses. The effect of caffeine in the cortex is a clearer thought process and also can rid the body of fatigue. This gives people a greater ability of concentration for 1-3 hours. For athletes competing in sports where quick thinking and rapid reactions are necessary, caffeine can provide a huge edge. However, these results are much more inconsistent than the experiments done on caffeine in endurance sports. (http://www.garynull.com/Documents/CaffeineEffects.htm)

Thesis: Caffeine can have many different effects on the body depending on the amount of consumption.

The data from the mean indicates that caffeine consumption resulted in a heart rate increase for all the patients at an average of 12 units from the normal rate. In addition, the standard deviation post consumption is consistent with mean as it was represented by a factor of 9.74 before the caffeine and 11.58 after. The high deviation after caffeine could be attributed to the fact that caffeine does effect each person differently. The median and mean relate heavily, showing that there was not a large presence of outliers in the data and that there is consistency between each participant’s response to caffeine. The normal distribution of the data was evidenced by the interquartile deviations where the lower quartile was 63.50 before patients were served with coffee and upper quartile of 77.50 and with simultaneous changes after caffeine drinks with low quartile being 74.50 and upper quartile at 92.50. The quartiles distributions show steady changes in heart rate with respect to

The author of the following excerpt concluded that the study was statistically significant. The hypothetical research article compared memory test performance between two groups of participants: those who consumed a caffeinated beverage before the test and those who consumed a non-caffeinated beverage:

Caffeine is one of the most consumed psychoactive substances around the world. Caffeine is not bad for health, some researchers even show positive effects. Caffeine appears to reduce fatigue. And in this way also has an indirect effect on decision. Regarding cognitive function, caffeine has an effect on reaction time. Some studies also show a positive effect on long-term memory.

It may be the dangerously  hot cup that burns your hand even through the cup sleeve, the friendly barista that slides your cup across the counter while yelling your name so loud people outside can hear, or the delicious and overpriced breakfast items in the display case. However, more times than not, it’s the latte with three shots of espresso that you deem necessary every morning. Caffeine is the most widely used psychoactive drug, with over 70% of adults ingesting it on a daily basis (Fredholm, 316). Bertil Fredholm, a professor in the Department of Physiology and Pharmacology of the Karolinska Institutet, elaborates on how caffeine affects and alters psychological functions based on an educational standpoint in “How Drugs can Stimulate Psychic Functions – Using Caffeine as an Example.” On the other hand, “Early caffeine exposure: Transient and long-term consequences on brain excitability” written by Jana Tchekalarova et al., expands the ideas of Fredholm through the use of psychological studies as well as their advanced background in the field of psychology and knowledge of the brain. While both give similar information on caffeine and the brain, the educational and psychological disciplines have varied ways of conveying their message. Fredholm’s approach to this topic proves itself to be more effective as he gives a

All around the world, people drink coffee, tea and caffeinated drinks to wake up in the morning, to be more vigilant and alert throughout the day. Not only does this keep individuals alert but also allows them to focus and efficiently manage their time throughout their day. This quality of caffeine has caused it to be one of the most highly consumed psychoactive drugs. Individuals who require frequent intakes of Caffeine often feel tired, weak, drowsy if they tend to miss their cup of coffee early in the morning. Although, Caffeine is known for causing wakefulness and alertness it also has its downsides. If a person has a large dose of caffeine in a limited time, the drug could cause them trembling, anxiety and nausea. In long term effects,

Thesis: Caffeine is something that almost everyone has consumed and some people are even addicted to. Caffeine has negative and positive effects on one’s health

According to Smith (2001), he found that cognitive performance over the course of a working day was improved more in people who consumed above average amounts of caffeine than those who consumed less than average (Smith 2001).

A. Attention material: Do you ever feel like you will never make it through the day without caffeine? Is your first thought in the morning to get yourself a cup of coffee before you can even get your day started?

Research by Smith 2001, shows that he found that cognitive performance over the course of a working day was improved more in people who consumed above average amounts of caffeine than those who consumed less than average.

Ever stay up late studying for a test or exam and wake up exhausted? Or just experienced a long day and need an extra boost? Many people believe caffeine is the answer to anyone’s drained state of being. Healthline.com explains that, “Caffeine reaches your brain quickly and acts as a central nervous system stimulant.” Caffeine is commonly referred to the most widely used drug on the planet, so the next question is which caffeine-filled product is the most efficient? It is widely debated whether energy drinks or coffee can provide the best balance of caffeine, flavor, and other ingredients, but after researching, I have come to conclude coffee is superlative in all aspects.

Caffeine has many negative effects on humans, such as increased heart rate (Lane, J.D., 2002), depression (Goldstein, 2008), and addiction to this “drug.” You may be asking yourself, “What is caffeine?” Well, caffeine is actually a stimulant (Barone, Roberts, 2008) that is found in beverages such as tea, coffee, and soft drinks. In fact, caffeine is the highest grossing and most used stimulant in the United States (Barone, Roberts, 2008). It is estimated that 85% of adults living in the United States consume caffeine on a daily basis (Barone, Roberts, 2008). That means for every 100 adults, 85 of them have had a drink that contained caffeine on any given day. One reason caffeine is so widely available compared to other stimulants is

Coffee is one of the most popular and favorite beverages in the world. In western countries, in particular, coffee is commonly consumed each day. There even has a coffee competition in the World Coffee Events every year. Since coffee contains a chemical component known as caffeine which has stimulant effects on psycho activity, some people regard coffee intake as an unhealthy habit.