AEROBIC EXERCISE OR CARDIO
Aerobic exercise (also known as cardio) is physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process. "Aerobic" means "relating to, involving, or requiring free oxygen", and refers to the use of oxygen to adequately meet energy demands during exercise via aerobic metabolism. Generally, light-to-moderate intensity activities that are sufficiently supported by aerobic metabolism can be performed for extended periods of time.
When
practiced in this way, examples of cardiovascular or aerobic exercise are
medium to long distance running or jogging, swimming, cycling,
and walking.
Aerobic exercise or Cardio |
What Is Aerobic Exercise?
Simply put,
aerobic exercise is also known as cardio
exercise. This is because it works out your cardiovascular system, that
being your heart and lungs. Cardio
or aerobic exercise involves sustained activity that causes your heart
and breathing rate to work at an increased rate for a prolonged period of time.
Aerobic exercise also involves the pumping of oxygenated blood to the muscles
that are working. This kind of exercise includes things like spinning, cycling, jogging, swimming, dancing,
and other such activities.
Aerobic
exercise is any activity that gets your blood pumping and large muscle groups
working. It’s also known as cardiovascular activity. Examples
of aerobic exercise include:
- brisk walking
- swimming
- heavy cleaning or gardening
- running
- cycling
- playing soccer
Experts
recommend getting at least 150 minutes of moderate aerobic exercise, or 75 minutes of vigorous activity each week. Brisk walking or
swimming are examples of moderate activity. Running or cycling are examples of
vigorous activity.
But why is
aerobic exercise recommended? Read on to learn about the benefits and to get
tips for ways to incorporate aerobic exercise into your routine.
1. Improves cardiovascular health
Aerobic
exercise is recommended by the American Heart Association and by most doctors to people
with, or at risk for, heart disease.
That’s because exercise strengthens your heart and helps it more efficiently
pump blood throughout the body.
Cardiovascular
exercise can also help lower blood pressure, and keep your arteries clear by
raising “good” high-density lipoprotein (HDL) cholesterol and lowering “bad”
low-density lipoprotein (LDL) cholesterol
levels in the blood.
If you’re
specifically looking to lower blood pressure and cholesterol, aim for 40 minutes of moderate- to vigorous-intensity aerobic
exercise between 3 and 4 times each week.
2. Lowers blood pressure
Cardiovascular
exercise may help you manage symptoms of high
blood pressure. That’s because exercise can help lower blood pressure. Here
are other ways to lower blood pressure without medicine.
3. Helps regulate blood sugar
Regular
physical activity helps regulate insulin levels and lower blood sugar, all
while keeping body weight in check. In a study on
people with type 2 diabetes, researchers found that any form of movement,
either aerobic or anaerobic, may have these effects.
4. Reduces asthma symptoms
Aerobic
exercise can
help people with asthma lessen both the frequency and severity of
asthma attacks. You should still talk to your doctor before beginning a new
exercise routine if you have asthma, however. They may recommend specific
activities or precautions to help keep you safe while working out.
5. Reduces chronic pain
If you have
chronic back pain, cardiovascular exercise — specifically low-impact
activities, like swimming or aqua aerobics — may help you get
back muscle function and endurance. Exercise can also help you lose weight,
which may further reduce chronic back pain.
6. Controlling Your Weight
It is shown
that aerobic exercise is one of the most effective ways of controlling your
weight. In fact, it may be the very best way to lose weight. Daily aerobic exercise at a slightly increased heart
rate or energy exertion level, for a period of 30 to 60 minutes per day, will
burn a significant number of calories.
Combined with a good diet this can go a very long way in helping
you lose weight, weight that can be the cause of various health issues. If
you are overweight and are tired of looking the way you look and feeling the
way you do, aerobic exercise is definitely a great option to go with.
7. Increases Your Metabolism
The next
reason as to why you should do aerobic workouts on a daily basis is because it
will help to increase your metabolism or metabolic rate. Your metabolic rate determines how fast your body processes
calories. These calories can come from sugar, fat, or protein. As you may know,
calories, when they go unused, will cause you to gain weight in places that you
rather wouldn’t.
Aerobic
exercise not only burns calories, but it causes your body’s metabolic function
to strengthen as well. The faster your body burns calories, the less weight you
will gain, the more weight you will lose, and in the end, it will help you
maintain a healthy weight level.
Aerobic
capacity
Aerobic
capacity describes the functional capacity of the cardio respiratory system,
(the heart, lungs and blood vessels). Aerobic capacity refers to the maximum
amount of oxygen consumed by the body during intense exercises, in a given time
frame. It
is a function both of cardio respiratory performance and the maximum ability to
remove and use oxygen from circulating blood. To measure maximal aerobic capacity,
an exercise physiologist or physician will
perform a VO2 max test,
in which a subject will undergo progressively more strenuous exercise on a
treadmill, from an easy walk through to exhaustion. The individual is typically
connected to a respirometer to measure oxygen consumption, and the
speed is increased incrementally over a fixed duration of time. The higher the
measured cardio respiratory endurance level, the more oxygen has been
transported to and used by exercising muscles, and the higher the level of
intensity at which the individual can exercise. More simply put, the higher the
aerobic capacity, the higher the level of aerobic fitness. The Cooper and multi-stage fitness tests can also be
used to assess functional aerobic capacity for particular jobs or activities.
The degree
to which aerobic capacity can be improved by exercise varies very widely in the
human population: while the average response to training is an approximately
17% increase in VO2max, in any population there are "high
responders" who may as much as double their capacity, and "low
responders" who will see little or no benefit from training. Studies
indicate that approximately 10% of otherwise healthy individuals cannot improve
their aerobic capacity with exercise at all. The
degree of an individual's responsiveness is highly heritable,
suggesting that this trait is genetically determined.
Alternatives
Higher
intensity exercise, such as High-intensity interval training (HIIT),
increases the resting metabolic rate (RMR) in the 24
hours following high intensity exercise, ultimately
burning more calories than lower intensity exercise; low intensity exercise
burns more calories during the exercise, due to the increased duration, but
fewer afterwards.
Commercial
success
Aerobic
exercise has long been a popular approach to achieving weight loss and physical
fitness, often taking a commercial form.
- In the 1970s Judi Sheppard
Missett helped create the market for commercial aerobics with her Jazzerciseprogram
- In the 1980s Richard Simmons hosted an aerobic
exercise show on television, and also released a series of exercise videos
- In the 1990s Billy Blanks's Tae Bo helped popularize cardio-boxing workouts that incorporated martial arts movements
Aerobic exercise or Cardio |
Varieties:
Indoor
Outdoor
- Walking
- Cycling
- Running
- Cross-country skiing
- Cross-country running
- Nordic
walking
- Inline
skating
- Rowing
Indoor or outdoor
- Swimming
- Kickboxing
- Skipping
rope or jump rope
- Circuit training
- Jumping
jacks
- Water
aerobics
- Jogging
Common aerobics injuries
Aerobics is associated with a significant number of sports injuries. Injuries generally fall into two groups:
- Traumatic
injuries –
these occur as a result of a fall, twist or similar accident and most
often involve the ankle or knee.
- Overuse
injuries –
these usually develop gradually, often as a result of a change in the
amount or intensity of aerobics, or due to a training error. Shin pain is
the most common overuse injury, while foot and knee overuse injuries are
also common.
Back injuries may also be caused, or aggravated by, aerobic exercise.
Preventing aerobics injuries
To prevent injury you should:
(a) be prepared
(b) use good technique and practices
(c) wear the right gear
(d) check the environment
(e) know yourself and the sport.
(a) Prepare for aerobics
Remember to:
- Warm up, stretch and cool
down.
- Consult your doctor for a
heart and lung assessment before starting an aerobics program if you are
aged over 40.
- Have a musculo skeletal
assessment performed by a sports medicine professional before commencing
aerobics if you have suffered an injury in the past.
- Start your class at a moderate
pace, to allow you to warm up adequately.
(b) Use
good technique and practices during aerobics
Good technique and practices can help prevent injuries. Suggestions include:
- Use the good technique
emphasised by your instructors.
- Start all aerobics sessions
with a gentle warm-up and stretching.
- All beginners’ classes should
have a second instructor available to move among the group and correct any
faults. This is also important when learning new techniques.
- Seek advice from your
instructor about how to improve or correct your technique if you have
injuries that may be related to poor technique.
(c) Wear the right gear
Make sure you:
- Wear footwear specifically
designed for aerobics. Good fit, stability, secure lacing and good
forefoot cushioning are important features of an aerobics shoe.
- Choose clothing that fits well
and has good moisture transfer properties.
- Consider a sports bra to
improve comfort. Individual fit is very important.
(d) Check the environment
Choosing an appropriate venue is important. It’s a good idea to:
- Choose a class run by
instructors who are registered with Kinect Australia or Fitness Australia.
- Make sure aerobics areas are
well lit.
- Check that the temperature in
the aerobics area is maintained at a moderate level, with good
ventilation.
- Use facilities with a floor
suited to aerobics. Sprung wooden floors or padded carpet over concrete
are best.
- Check that all implements and
equipment used in classes are maintained in good condition.
- Make sure cool, fresh water is
readily available.
- Check that the music is clear
and at a comfortable volume.
(e) Know yourself and aerobics techniques
Suggestions include:
- Choose activities that are
suited to your fitness level.
- Know and use the right
techniques.
- Know how to use the equipment
properly and safely.
aerobic exercise or cardio |
If you or someone else is injured:
- Seek prompt attention from
qualified first aid personnel. First aid facilities should be available at
all fitness centres.
- Get prompt attention for all
traumatic injuries.
- Have injuries that do not
respond quickly to first aid measures assessed by a sports medicine
professional, preferably a doctor, to ensure an accurate diagnosis and
treatment.
- Don’t wait until pain is
severe. Overuse injuries, especially to the shin, are common in aerobics.
They often cause only mild discomfort at first, but frequently get worse.
They can be caused by many factors and an early full assessment is
important for recovery.
Where to get help:
- Your doctor
- Sports physician
- Physiotherapist
- Exercise physiologist
Things to remember
- Aerobics and fitness classes
involve the movement of large muscle groups in continuous rhythmic
activity to music.
- Aerobics is associated with a
significant number of sports injuries. Injuries are generally traumatic
injuries and overuse injuries.
- Using the right techniques and equipment can help prevent injury.
MOUNTAIN BIKING ,SPORT OF RIDING BICYCLES AND FOR FITNESS
I hope that all of you will gain a lot of knowledge and benefits about aerobic exercise or cardio.
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