Placebo Effects of Caffeine on Cycling Performanc Coursework

Placebo Effects of Caffeine on Cycling Performanc - Coursework Example For instance, Clark et al conducted a research where subjects where divided in to three groups. However, his research could not provide correct results on the cause of placebo effect since half the subjects had prior knowledge that carbohydrates would increase their performance. The third group had prior knowledge that their drink could lead to improved performance hence the researcher could not control the findings of the research. The research study used a sample of seven cyclists and used both quantitative and qualitative methods of study. The cyclists were not aware that placebo capsules were administered since they thought it was caffeine. Two baseline and three experimental trials were used. The research is beneficial since it utilized semi-structured interviews to explore the symptoms of the capsules. The level of confidence error provided in the research is sufficient for us to conclude the findings are true. The research suffers from various theoretical and methodological limitations since cyclists were selected from well-trained competitive teams hence they could have increased their performance without use of caffeine. The subjects had prior literature from published research on the positive relationship of caffeine and cycling performance. The research method was flawed since it only selected only seven cyclists from the age of thirty to forty one years hence the sample surveyed was insufficient. Fo r instance, the power output of the fourth subject varied up to 20 percent between adjacent trials which the research has not explained the causes of the variance in the power output (Jackson 170). The subjected were exposed to three different conditions which are moderate dose, high dose and randomly assigned double blind basis hence the research study ignored the optimum control of the amount of caffeine which subjects could take.

Contrast essay Example | Topics and Well Written Essays - 750 words

Contrast - Essay Example The method of giving solution to problems was the same in math and physics. The two had the same way of presenting answers. To be specific, both classes had utilized various formulas to explain phenomena and outcomes. In the mathematics class, numbers and variables were utilized to answer mathematical problems. For example, algebraic expressions were used by the teacher to describe a relationship which varies over time (â€Å"What†). In physics, numbers and variables were also employed in explaining a scientific problem. For instance, in determining the amount of force exerted in an activity, Newton’s law of motion was applied by the instructor. In the classroom, the teacher always associated the formulas used in actual setting. The application of the formulas in real life was emphasized. Even in small dealings, the professors would find a way to relate it to the topic whether in math or physics class. For instance, my math teacher had chosen a classmate of mine who was a businesswoman to illustrate the importance of addition and subtraction. In contrast with the mentioned similarities, the two classes essentially differed in the practical application of its topics. In the physics class, actual experiments were conducted to personally experience the truthfulness of the formulas. To test the students, the teacher included practical exams wherein students were tested if they really know how to perform the experiment and how well they understand the lesson. In another case, a student was called to explain and demonstrate a topic in front of the class. It was some sort of an oral exam. However, in the mathematics class, there was no actual experiment. It was just all about trial and error in a piece of paper. The professor never entertained the idea of calling students to answer a mathematical problem on the board. He never conducted an oral exam. What the