Ch. 7-Basics of Cardiorespiratory

EnduranceSection 1 and 2

Introduction Define aerobic activity? How do they benefit the body? What is the circulatory system? What is the respiratory system? What are problems or diseases that

can develop? What can I do to prevent problems? What is blood pressure?

Aerobic Activities and the Body Continuous activity

that requires large amounts of oxygen

“With Oxygen” Strengthen your

heart Strengthen your

lungs More efficient using

oxygen

Circulatory System Consists of the

heart, blood, and blood vessels

Hemoglobin-an iron rich compound in blood that helps carries oxygen

Stroke Volume-amount of blood pumped per beat

Blood Vessels Arteries, capillaries,

and veins Arteries-carry blood

from the heart to body

Capillaries-deliver oxygen and nutrients to individual cells

Veins-deliver blood back to the heart

Respiratory System Body system the

exchanges gases between body and environment

Lungs Diaphragm-the

muscle between chest cavity and abdomen that helps lungs work

Benefits of Aerobic Activity Increases stroke

volume Lowers resting heart

rate=more efficient Muscles more

efficient Builds on

itself=more you condition, the more strenuous activity you are able to do

Long Term Benefits Cardiorespiratory

Endurance-the ability for the body to work continuously for long periods of time

Lower risks of diabetes, CVD, and obesity

Increased energy Less stress Look and feel better

Lifestyle Diseases Diseases that are a

result of certain lifestyle choices

Inactivity Being overweight Smoking or other

forms of tobacco Eating foods high in

fat and cholesterol

Cardiovascular Disease (CVD) Any medical disorder

that affects the heart or blood vessels

Leading cause of death in US

Atherosclerosis-condition in which fatty deposits called plaque build up in arteries, restricting blood flow

Cardiovascular Diseases Heart Attack-

blockage of blood vessel

Sudden Cardiac Arrest-during game or practice

Stroke-blood flow to brain is blocked

Peripheral Vascular Disease-legs, arms

What happens during a Heart Attack

Diseases of the Lungs Lung Cancer-more

than half smoking related

Emphysema-disease in which airways of the lungs lose their normal elasticity making them less efficient in helping to move air

Emphysema Man – True Storyhttps://www.youtube.com/watch?v=VUecUEkECrA

Changeable Risk Factors Physical Activity

Avoid Tobacco

Maintain Healthy Weight

Eating Right

Having Regular Check-Ups

Blood Pressure Force of blood in

the main arteries Systolic-when heart

muscle contract (top number)

Diastolic-when heart muscles relax (bottom number)

Ex: 120/80

Hypertension High Blood Pressure

“Silent Killer”

Main risk factor in heart attack, stroke, and heart failure

https://www.youtube.com/watch?v=tTKnNp7bw8Y

Review What is aerobic activity? Examples? How can they benefit the body? What is the circulatory system? Parts? What is the respiratory system? Parts? What are diseases associated with

each system? How can we prevent these diseases? What is blood pressure? Systolic and

Diastolic?

References Rainey, D. and Murray, T.

“Foundations of Personal Fitness.” McGraw-Hill Companies. Glencoe. Woodlands, CA. 2005