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MethodsFor the first part of the lab, the resting heart rate and resting blood pressure were measured and recorded for each of the four members of the group. The subjects were a 22-year-old female, a 25-year-old male, a 21-year-old female, and a 20-year-old female. The instruments required for the first part of the lab are a stopwatch, sphygmomanometer, stethoscope, paper, andpen. The resting heart rate was taken at the radial and carotid artery by pressing lightly with two fingers over the blood vessels and counting the pulse for 15 seconds. Then that number was multiplied by 4, and the result was recorded. Also, the average heart rate was calculated and recorded, based on the two heart rate results.In addition, two resting blood pressure readings were measured and recorded for each member of the group. With the subject seated at the desk, the blood pressure cuff was wrapped
3snuggly around the upper arm. The lower edge of the blood pressure cuff should be placed about one inch above the antecubital space (front of the elbow). Then the bell of the stethoscope is placed under the cuff over the brachial (arm) artery. Next, make sure the valve on the inflating valve is closed, and then inflate the cuff to 200mmHg. After the cuff is inflated, open the valve slightly, allowing the pressure to fall at a rate of about 2-3 mmHg per second. The systolic blood pressure is indicated by the first sound of blood pulsing that is heard. The diastolic blood pressure is marked at the disappearance of this sound. Record the measurement, and repeat the procedure again for the second reading. Similar to the first part of the lab, the heart rate and blood pressure reading were measured and recorded. However, this time they were taken while performing submaximal exercise on a bike. The instruments required for the second part of the lab are a sphygmomanometer, stethoscope, bike, paper, and pen. For this component of the lab, there was a 22-year-old female subject. The other group members were assigned a specific task either measuring the heart rate, taking the blood pressure, or keeping track of the time and recording the readings. To begin, make sure the bike saddle is at an appropriate height for the subject. This is done by asking the subject to lift his or her thigh until it is level with the floor. The saddle should be adjusted until it is level with the hip crease. The handlebars should also be adjusted so