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HRF Focus #3: The Heart, Heart Work, and “The Zone” Heart disease is the #1 killer in adults in the United States. Early stages of heart disease can begin as early as the teenage years. Knowledge and a little “heart work can help change this statistic. The heart is a muscular organ that helps deliver oxygen and nutrients. Arteries (carry blood away from the heart) and veins (return blood to the heart) are the blood vessels connected to the heart that make this possible throughout your entire body. Regular exercise is recommended to improve or maintain the efficiency of the heart and prevent heart disease. Regular exercise follows the FIT guidelines: Frequency- minimum 3 days/week; Intensity- in you THR zone; Time- (20-30 minutes). “Heart work” would include such cardiovascular/aerobic activities as walking, hiking, jogging, biking, swimming, and dancing. Sports such as basketball, soccer, tennis, and hockey can be cardiovascular if the proper intensity is maintained. Monitoring your heart rate (HR) during this kind of activity can maximize the benefits and minimize under or over training. The “Zone” can be established based on your age. It provides safe and productive exercise intensity for your heart. The “Zone” can be exceeded with the proper training. A pulse is easily found at the wrist joint (radial artery) or on the side of the neck (carotid artery). Try to stay in the target heart rate (THR) zone during the entire exercise. This is the formula for calculation on THR Zone: 220-Age=Maximum Heart Rate (MHR) 220-________=_________ (MHR) Age 65% of MHR=low end of the zone MHR .65x________=__________low end of zone MHR THR 85% of MHR=high end of the zone .85x________=__________high end of zone MHR THR Resting HR (most accurate early in the morning lying down) is just one indicator of the condition of the heart. Normal resting heart rates for teenagers and adults is between 70-85 bpm. Well-conditioned hearts are between 40 and 60 bpm. The lower the resting heart rate, the more efficient the heart is working. A greater volume of blood is pushed throughout the body with fewer beats. Lesson Review: 1. What is the leading cause of death in the US among adults? 2. How early can the disease (in question #1) begin to show? 3. What is “regular exercise”? 4. What is your THR Zone? Write the answer from above formula:_________=__________BPM 5. Calculate your own resting HR by taking your pulse for 1 minute and writing down the total # of beats during the minute. Be sure you have not been exercising prior to taking your pulse. My resting heart rate is ____________bpm. 6. So, for a Cardio Workout, you must work out at least _______ days per week. The intensity level of your workout must be that your heart beats between _______bpm and _______bpm for at least ____________ continuous minutes.