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So, the result is forecasted that athletes have lower heart rates than non-athletes because athletes’ hearts eave been trained along with their muscles, arms, legs to adopt to required physical challenges. Their practice exercises trained their hearts’ function which is pumping blood through their bodies (Joe Fries 6). So it is impossible to have a hypothesis that there is a difference in the effect of step test exercise on the pulse rate of athletes and non-athletes.

Method and Materials: On 30/08/2012, NCSC 112 – Human Biology class did a step test to verify if there is a difference in the effect of step test exercise on the pulse rate of athletes and non-athletes. A stopwatch and paper were required to do the test. Students were divided into six groups with four members in one group. Each group picked one athlete and one non-athlete to do the step test. Two other members in each group watched the time and recorded the data.

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First, heart rate in one minute of athletes and non-athletes were recorded before the test by putting their own fingers on their wrist or neck and counting pulse rate for 15 second. The results multiplied by four to get the pulse rate per minute. Then, all athletes of six groups stepped up and stepped down on a 12-inch stair for three minutes at the same time and same speed. Next, all athletes’ heart rates in one minute were recorded again. After finishing recording, all non-athletes did the same exercise and their heart rates per minute were also recorded.

Result: Athletes: Pulse rate (beats per minute) 1 2345 6 Average Before step test 72 80 92 56 72 72 74. 0 After step testier 116 92 116 106 84 102. 3 Non-Athletes: Before step test 104 68 68 120 96 64 86. 5 After testate 8492 132 140 88 113. 3 The above graph expresses the heart rates of both Athletes and Non-Atheists before and after the step test. There are six group’s heart rates and the average f them in the graph. This second graph shows the heart rates of all people participated in the test before they did the test.

There are four lines in the graph, which stand for heart rates of two groups before and after the test. Conclusion It is clearly realized that heart rates of athletes are lower than heart rates of non-athletes after looking at the result. Athletes’ heart rates are not only lower than non-athletes’ before the test, but also after the test. For instance, average heart rate of athletes before step test is 74 BPML. And average heart rate of non athletes before step test is 102. BPML, which is much higher than athletes’ average heart rate.

The hypothesis given in the beginning of this report, “there is a difference in the effect of aerobic exercise on the pulse rate of athletes and non-athletes,” is accepted. Because the average pulse rate of athletes before and after doing the test is both lower than the average pulse rate of non-athletes. Moreover, the changing range in pulse rate of athletes is also smaller than non-athletes’. The reason of this difference is hearts of athletes have been trained to get familiar with exercise and physical activities. So the heart rates of athletes change little after doing the test.

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