Cardiovascular Endurance Health 2012 Mr. Vecchio

Aerobic Activity Continuous activity that requires O 2 (with oxygen) Strengthen heart Muscle works more efficiently Increases stroke volume- amount of blood pumped per heart beat

Circulatory System Consists of the heart, blood, and blood vessels Blood Pathway

The Heart Size of your fist Right side  lungs for O 2 Left side  rest of the body

Blood Vessels Arteries- carry blood to the major extremities Capillaries- deliver 0 2 and nutrients to cells Veins- Blood back to the heart

Cardiovascular Disease Leading cause of death in the U.S. (950,000 per year) Atherosclerosis- fatty deposits called plaque build up in arteries Sudden Cardiac Death Enlarged heart (66%)

Blood Pressure Blood Pressure-force of blood in the arteries Systolic (out) vs. Diastolic (in) (120/80) Hypertension- elevated BP Can be largely genetic

Heart Rate Find pulse and count beats/minute Max HR= 220-age or VO2 Max Test 60-80% of Max HR= aerobic benefit 20+ min/3+ times week

Influences on Cardiovascular Endurance Age (decline.5ml/kg body weight) Heredity (initial and capacity to improve) Muscle content (Fast twitch vs. slow twitch) Gender (males due to higher hemoglobin levels and less body fat) Body Composition % of fat to lean body tissue (muscle, bone, water) Level of Conditioning (20+min at a HR between 60-80% of max)