Presentation on theme: "Cardiovascular Endurance"— Presentation transcript:
1 Cardiovascular Endurance 1st Component of Health-Related Fitness
2 To Receive Benefits of Cardiovascular Exercise Content Objective: The students will be able to identify the benefits of cardiovascular exercise through learning about heart rate, blood pressure and pulse through a class discussion.
4 To Receive Benefits of Cardiovascular Exercise You must be able to maintain cardiovascular exercises continuously for at least 15 to 30 minutes
5 Cardiovascular Endurance The body’s ability to provide oxygen continuously to muscles as work is performed over an extended period of time.Think back to 7th grade…What two systems are being used?Circulatory system – The heart, blood, and blood vesselsRespiratory System – The lungs and air passages
6 The Circulatory and Respiratory Systems What two things do muscles need in order to contract?Oxygen and GlucoseThe circulatory and respiratory systems work together to supply the muscles with oxygen.As air is breathed in, the blood picks up the oxygen from the lungs and carries it to the heart.The heart pumps oxygenated blood to the muscles
7 The Circulatory System Veins vs. Arteries Capillaries-Carry blood to the heartV = Has 2 lines (to)-Transport waste materials out of the muscles and back to the heart-The heart pumps the blood to the lungs to be exhaled and to receive new oxygen-Carries blood away from the heartA = AWAY-Supplies muscles with oxygen-Depicted as red in color because it has oxygen rich blood-Bridge between veins and arteries-They deliver food and oxygen from the blood to the cells-Pick up wastes in the blood
8 Heart Rate The number of heart beats per minute How fast the heart must beat to supply blood to the muscles.Average heart rate for adults is 70 beats per minute and in children it is 100 beats per minute
9 What Effects your Heart Rate? WeightExerciseAgeLying Down vs. StandingEmotionsIllness
10 PulseCaused by the pressure of the blood on the artery wall which corresponds to your heart beat.Where can you feel your pulse?Wrist and neckCount the number of beats for 10 seconds and multiple the number you get by 6.Let’s try it. I will keep track of the time you count
11 Resting Heart RateThe existing heart rate just after waking and before getting out of bed.The heart is made up of cardiac muscle and therefore it can become stronger by exercising it (doing aerobic activities)The more you exercise your heart, the lower your resting heart rate will become.The heart of an active person pumps more blood with each beat and is therefore more efficientThe normal range is 50 to 100 beats per minute.
12 Determining Resting Heart Rate Check your pulse when you wake up in the morning prior to getting out of bedMake sure to always measure your resting heart rate in the same position either lying down or sitting up.You have a lower heart rate when you are laying down.
13 Normal Recovery Heart Rate Range What did we say the purpose of a cool-down is at the end of a workout?Recovery Heart Rate – Existing heart rate just after exerciseIf your heart rate does not drop to this range after exercise, you need to reduce the intensity of your workoutIf your heart rate drops quicker, you may want to increase the intensity of your workoutNormal Recovery Heart Rate Range5 minutes after exercise120 bpm10 minutes after exercise100 bpm
14 Blood PressureThe measure of blood force against the walls of the arteriesIt is recorded with two numbers: diastolic pressure and systolic pressure
15 Diastolic vs. Systolic Diastolic Systolic The lower number Represents the blood pressure when the heart is relaxed and filling with bloodDepicted on the bottomThe higher numberRepresents your blood pressure at the moment blood is pumped from the heart by the ventriclesDepicted on topBoth the systolic and diastolic pressure can be lowered through aerobic activity. Higher blood pressure increases risk of having a heart attack
16 Normal Blood Pressure Range Blood Pressure CategorySystolic mm Hg (upper #)Diastolic mm Hg (lower #)Normalless than 120andless than 80Prehypertension120 – 139or80 – 89High Blood Pressure (Hypertension) Stage 1140 – 15990 – 99High Blood Pressure (Hypertension) Stage 2160 or higher100 or higherHypertensive Crisis (Emergency care needed)Higher than 180Higher than 110
17 Cardiovascular Disease Cardiovascular diseases are the number one cause of death17.5 million people died in 2012 from cardiovascular diseases which was 31% of all global deathsCardiovascular Diseases Include:coronary heart diseasecerebrovascular diseaseperipheral arterial diseaserheumatic heart diseasecongenital heart diseasedeep vein thrombosis and pulmonary embolism
18 Causes of Cardiovascular Disease Primary cause is the buildup of fatty deposits on the inner walls of the arteriesThese deposits cause arterial passageways to become smaller which causes a higher blood pressure and makes the heart work harder to push the blood through the smaller openingBlood vessels can also be blocked by a blood clot (thrombosis)When this happens to an artery that feeds the heart a heart attack occursWhen this happens to an artery that supplies blood to the brain a stroke occurs
19 Benefits of Cardiovascular Exercise Strengthens the heartReduces Atherosclerosis – Active people are better able to clear fat from their blood stream as a result of exercisingAn active persons heart is able to pump out more blood with each beat and it beats fewer times causing the muscles to receive more oxygen and fatigue slower.