Your pulse rate does increase after exercising because when you exercise your body has to pumps more blood. Investigation: How Does Exercise Affect Heart Rate? The Effect of Exercise on Heart Rate 736 Words | 3 Pages. How does exercise affect heart rate? Determine the effect of exercise on heart rate, and systolic, diastolic and mean arterial pressures. During exercise, the heart must beat faster to eliminate excess carbon dioxide and increase the supply of oxygen in the body. In this experiment, you will. The effects of exercise on the body's vital signs. Prediction: For my prediction, I predict that as the amount of exercises increases, the heart rate will increase too. Specifically, exercise training has been shown to increase resting parasympathetic tone and to decrease sympathetic tone in both humans and animals. As I already explained in my hypothesis, the heart has to pump more blood because when you exercise, the cells that are in your muscles need more energy to move. Hypothesis: If you test people who do high intensity cardiovascular exercise and those who do not exercise,than the people who do high intensity exercise will have a lower heart rate because their heart is more effecient. As a group, develop a plan to answer the experimental questions, make sure you address all of the questions. The Effect of Exercise on Heart Rate Aim: In this investigation I am trying to find out if exercise have any effects on the heart rate. When you begin to exercise, your heart rate increases to meet the higher oxygen demands of your muscles. As a group, you must consider the following, and write down your ideas. As a group, you must consider the following, and write down your ideas. Cardiovascular exercise involves the use of large muscles in a repetitive fashion, activating muscle fibers programmed for endurance and utilizing a heart rate range anywhere from 40 to 85 percent of your maximum heart rate. Obtain graphic representation of heart rate and blood pressure. Objectives. Investigating the Effect of Exercise on Heart Rate Aim The aim of this experiment is to investigate how exercise affects heart rate. Use blood pressure readings and pulse to infer changes in cardiac output and peripheral vascular resistance with exercise. As a group, develop a plan to answer the experimental questions, make sure you address all of the questions. I am going to record my resting heart rate, then exercise for 30 seconds , then 1 minute and increase the period of exercise by 30 seconds until I am exercising for three minutes without stopping . In both experiments my pulse rate took four minutes to get back to normal. If you and your child are searching for a good experiment for your local school district science fair and you’ve never done one before, don’t panic -- there are many experiments you can choose from. 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