Caffeine Consummation Paper

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Depending on whether a person is a habitual or non-habitual caffeine drinker, caffeine consummation can have either a positive or negative effect on a person’s mood and performance (Childs & de Wit, 2006). One hundred and two (51 males and 51 females) nondependent caffeine users who consumed less than 300 mg of caffeinated beverages per week participated in a four experimental session study. Each participant was given four drug conditions in capsule form (placebo, 50, 150, or 450 mg of caffeine), each in random order, with three days intervals, between 9 a.m. and 1 p.m. Before and after each drug administration, the participant’s physiological data (heart rate, blood pressure) was measured. Also the participant’s had to take behavior tasks…show more content…
Shukitt, Speckman, & Tulley, 2002). Hodgson et al.’s (2013) participants consisted of eight qualifying cyclists who trained three times per week, for more than 90 minutes. A preliminary trial was assessed before the experiment started. In that trial, the cyclist’s maximal oxygen uptake and power was assessed. Following this, each cyclist drank beverages containing caffeine, placebo, coffee, and decaffeinated coffee, each on different days. One hour after consumption, they completed a 30-minute steady state cycle exercise followed by a 45-minute energy based time trial exercise. Blood samples and respiratory breath samples, and heart rate were recorded during the exercise session. The main finding of this study was that a cup of caffeinated beverage helps improve endurance during exercise. Compared to placebo and decaffeinated drinks, there was a significant dopamine increase in the athlete’s brain. Therefore drinking coffee during workout can be beneficial as it enhances one’s performance. In Lieberman et al.’s (2002) study, moderate…show more content…
adults drink at least one cup of coffee a day. This is not surprising because many research studies have shown that moderate amount of caffeine has no apparent physiological or psychological risk on adults. Although one or two cups of coffee may be okay to drink everyday, regular use can cause mild physical dependence and it can lead to excessive caffeine intake. Stress in particular is highly associated with coffee consumption (Conway, Vickers, Ward, & Rahe, 1981). A sample of 34 U.S. Navy petty officers were training to become company commanders at the Naval Training Center and their job involved marked systematic variation in occupational stress. The participants responded to questionnaires that measured their stress level on a scale of one to five, indicating subjective stress and a Mood Questionnaire (MQ) containing 40 adjectives. Also they had to fill out a health status form that measured cigarette smoking, coffee consumption, and alcohol consumption. Major result show that the number of cups of coffee consumed during the average high stress week (M=47.4) was significantly higher than under low stress week (M=33.6). Therefore, people differ in the tendency to increase or decrease habitual coffee consumption in response to varying levels of stress. In other words, Conway et al.’s (1981) results suggest that consumption of caffeine increases during periods of stress in daily life. LOOK AT 8th reference and
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