way to achieve this resting state. First the heart rate was recorded at the radial (wrist), and then atthe carotid (neck) artery by applying two fingers to the spot and pressing lightly. After the pulse is found the conductor counts the number of beats there were in a 15 seconds period. That number is then multiplied by four so it is recorded in beats per minute. The tools used to measureand record the heart rates were a stopwatch, paper, and pen.After measuring and recording the resting heart rates, resting blood pressure was taken two separate times to ensure reliably. The tools used to record and measure blood pressure are, a sphygmomanometer, a stethoscope, paper, and a pencil. Once again the subjects were asked to beseated for 5 to 10 minutes so they were rested enough to get an accurate reading. Then the blood pressure cuff was applied to the subjects’ arm, one inch above the antecubital space (front of the elbow). After making sure it is secured, the bell of the stethoscope is placed over the brachial (arm) artery distal from the antecubital place. Once this step is completed the valve is closed and,the cuff is inflated to around 200mmHg. If there is trouble finding out where to put the bell of thestethoscope, inflate the cuff to around 100mmHg and listen for a pulse, then deflate and follow the previous step. Once inflated open the valve a little bit to release about 2 or 3 mmHg per second. Once the instructor hears a beat they need to record it because the first sounds of blood beating is the systolic blood pressure. They must keep listening and record where the last beat they hear was, because that is the diastolic blood pressure. Remove the cuff from the subjects areand record the data.Knowing ones’ resting heart rate is a very useful tool, and it can be used to find any targetheart rate depending on what level of activity one wishes to work at. To find a target heart rate, one but first find the age predicted maximum heart rate (APMHR). APMHR can determined by subtracting the subjects age by 220. Then the resting heart rate is subtracted from the APMHR, 3
and multiplied by the level of intensity the subject is working at. Finally, the resting heart rate is added back on to find the Target hear rate which the subject would like to reach.In lab 2, a 26-year-old male subject was chosen and asked to sit for 5 to 10 minutes to getan accurate resting hear rate, and blood pressure reading. After that the subject would perform a submaximal exercise on a bike, while having their heart rate and blood pressure measured and recorded. A pen, paper, machine bike, stethoscope, stopwatch and sphygmomanometer were all the instruments and tools needed for this part of the lab. The other members of the groups were given different tasks, such as data recorder, heart rate measurer, blood pressure measurer, and one to keep track of time and to work the bikes resistance levels. Before the subject gets onto the bike, the seat must be set to the right height. To do this the subject must raise one knee to a 90-degree angle and then the seat should be matched to the height of where the hip bone crease is.