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Taking pulse and applying it to Karvonen FormulaSTANDARD - 2.6 GRADE - 11 GOAL - The students will be taking pulse and will learn how to apply it in Karvonen Formula to determine target heart rate zone. SWBAT
LEARNING TASKS - Today's lesson will involve math skills. First - we'll start off with taking pulse. Then - learning how to use Karvonen Formula. So - tell your students to bring their calculators. Begin your lesson by explaining to your students that it's important taking pulse during an exercise. It ensures that a person is exercising at a safe and effective intensity. At the same time improving cardiovascular fitness and efficiency of cardiovascular system. In order for you to do that you need to understand Karvonen Formula. Before determining target heart rate zone - we need to take our own pulse first.The radial artery in the wrist is the recommended location for taking pulse. It's located at the base of the thumb and best felt with the tips of the index and middle fingers. Do not use the thumb because it has its own pulse. Another location to take pulse could be carotid artery. But radial pulse is more accurate - so let's use it. Hold your index and middle fingers at the base of your thumb for one minute. The number that you have gotten after one minute is your resting heart rate. Resting heart rate ranges -
One fact that I want you to share with your students. An infant's maximum heart rate is 220 beats. Every year it drops by one beat. Ok. Now - it's time to determine your target heart rate zone by using Karvonen Formula. Wait! What is Karvonen Formula? It's mathematical formula that uses maximum heart rate minus resting heart rate and intensity percentage to determine target heart rate zone. It sounds confusing - but this example will help you to understand it better. This is an example of the Karvonen Formula for a 23 year old person with a resting heart rate of 65 beats per minute. Intensity of an exercise is 65% and 85%. Please note that 65% and 85% is just an example . There are other types of intensities for different fitness and health goals. 220 - 23 (age) = 197 197 is maximum heart rate 197 - 65 (resting heart rate) = 132 65 is the pulse that you took for one minute 132 * .65 = 85.8 65% = 0.65 intensity level 132 * .85 =112.2 85% = 0.85 intensity level 85.8 + 65 (resting heart rate) = 150.8 (low end of heart rate) 112.2 + 65 (resting heart rate) = 177.2 (high end of heart rate) Using the Karvonen Formula - this individual's THRZ would be 151 beats per minute – 177 beats per minute. At this time have your student practice taking their own pulse. Then determining their target heart rate zone by using blank worksheet for Karvonen Formula. Karvonen Formula worksheet Leave taking pulse and applying it to Karvonen Formula and go Home
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