Health Section 13.1: The Importance of Physical Activity

Any movement that requires your large muscle groups to work
physical activity
How long should teens spend a day performing some kind of physical activity?
60 minutes
What are the changes that occur due to physical activity are beneficial to?
your body, your mind, and your social interactions
Your heart and blood vessels receive the most benefits from regular physical activity.
Cardiovascular System
Staying at a healthy weight can reduce your risk for developing diseases such as diabetes, heart disease, and certain cancers.
Weight Maintenance
Your physical activities make your bones stronger and denser.
Bone Strength
Physical activity improves your balance and coordination, which may, in turn, improve your athletic ability.
Balance and Coordination
chemicals that block pain messages from reaching your brain cells
During continuous exercise, what does your brain release?
People who exercise regularly are likely to be more ______ and _______, and have _________.
1. self-confident
2. focused
3. reduced stress levels
_______ is also an opportunity to have fun.
can be a way to bond with family and friends or build new relationships.
Physical activity
have the energy and strength to participate in a variety of activities
physical fitness
List the five components of fitness.
• cardiorespiratory endurance
• muscular strength
• muscular endurance
• flexibility
• body composition
means that your heart, blood vessels, and lungs are able to distribute nutrients and oxygen and remove wastes efficiently during prolonged exercise.
Cardiorespiratory endurance
As the ________ become stronger, more blood is pumped with each beat.
heart muscles
The _____ become more efficient at delivering oxygen to the blood and removing carbon dioxide.
The capacity of a muscle or a group of muscles to produce force is called _______.
muscular strength
The amount of ______ you can lift is one measure of your muscular strength.
_________ is the ability of your muscles to work for an extended time
Muscular endurance
requires repeated actions over an extended period of time
Developing muscular endurance
The ability to move a joint through its entire range of motion
if done correctly, can increase flexibility and may reduce the risk of injury during exercise
stretching exercises
is the amount of fat tissue in your body compared to the amount of lean tissue, such as muscles and bones
body composition
Physical activities can be classified as:
aerobic exercise or anaerobic exercise
Strengthening and endurance activities can be further classified as (3):
isometric exercise, isotonic exercise, or isokinetic exercise
Ongoing physical activity that raises your breathing rate and heart rate
aerobic exercise
increase the amount of oxygen that your body takes in and uses
aerobic exercise
Intense physical activity that lasts for a few seconds to a few minutes is:
anaerobic exercise
Most anaerobic exercises develop:
muscular strength, muscular endurance, or flexibility
is an exercise in which muscles contract but very little body movement takes place
Isometric exercise
f you do ______ exercises on a regular basis, the muscles you use will become stronger
involves contracting and relaxing your muscles through the full range of a joint’s motion
Isotonic exercise
you can develop muscular strength and endurance
muscles contract at a constant rate
often used as therapy to rebuild muscle strength after an injury
Exercise performed with machines that ensure muscles contract at a constant rate.
isokinetic exercise
Intense physical activity that lasts for a few seconds to a few minutes.
anaerobic exercise
Exercise in which muscles contract but very little body movement occurs.
isometric exercise
Exercise that involves contracting and relaxing muscles through the full range of their joint’s motion.
isotonic exercise
often used as therapy to rebuild muscle strength after an injury
isokinetic exercise