Cardio training is the only type of physical activity that directly
burn body fat. For fat to be burned, oxygen must be present and this
occurs only through aerobic exercise.
To lose body fat you need to create a calorie deficit. You can do this
by reducing the amount of calories you take in by eating or by burning
it off by exercising. You should used both method in order to achieve
permanent fat loss. You should never cut your calorie intake to much
without exercising, because you will start losing muscle mass and bone
density which will slow down your metabolic rate.
It is very difficult to maintain fat loss long tern without aerobic
activities. Aerobic exercise is any physical activity in which the
heart rate is raised to between 55 percent and 90 percent of its
maximum capacity for at least 20 minutes. Examples of aerobic exercises
are distance running, cross-country skiing, and aerobic fitness
exercises. Aerobic exercise pushes the body beyond the low-level
demands of most daily activities. This “extra” effort, when gradually
increased over a period of time, produces positive changes in many of
the body’s systems.
Duration
In most cases, we need to be engaged in an activity for 20 minutes
before we start burning fat instead of carbohydrates.
It’s a good idea to warm up with light activity and stretching for 5
minutes, then continue with 20, 30, up to 60 minutes of activity (if
possible) and cool down with a mild activity for 5 minutes.
We must not overstress our cardiovascular system with sudden increases
and sudden stoppages in activity, so the warm up and cool down are very
important.
Frequency
Committing ourselves to a regular cardio training schedule is the key.
Consistency and frequency accelerate results.
Start with a minimum of 3 times/week; 10 minutes/session. Gradually
increase the frequency and/or the length of the sessions, Ideally 5-6
times per week; 30-60 minutes/session, for maximum fat loss result.
3-4 times per week; 20-30 minutes/session, for staying fit and
maintaining a low body fat percentage.
Intensity
Intensity levels will determine how much energy is used, but in
general, the longer you exercise the more likely your body will begin
reducing its fat reserves to provide energy for activity. Also the more
time you do cardio, the calories you’ll burn.
Light—this
will not produce the desired fat reduction, i.e., slow walking, light
gardening etc.
Moderate—the
highest level of fat burning occurs with moderate activity, i.e., brisk
walking, jogging, swimming, aerobic fitness classes etc.
High—fat
burning is slower during high-intensity training, as it uses much
glycogen energy and then begin to draw energy from protein conversion
first, i.e., sprinting, weightlifting and mountain climbing.
High
Intensity Interval Training (HIIT)
HIIT is done by intersperse brief burst of very high intensity effort
with low intensity activity. High intensity interval training (HIIT) is
enjoying a rapid surge in popularity due to its superior effects on
fitness outcomes.
There are different protocols for HIIT.
One example of HIIT protocol:
Perform 5 minutes of an activity (such as
cycling) at 50% of maximum effort (warm up), then;
Perform 1 minute of activity at 85-95% of
maximum effort, then;
Perform 1 minute of activity at 50% of maximum
effort, then;
Repeat steps 2 and 3 unit you have perform a
total of 5 sets
Cool down with 5 minutes of the activity at 50%
Study have shown that groups that perform HIIT, burn more calories over
the 24 hours period after the work out, then just doing regular stead
cardio training. How ever weight training burn more calories them
regular cardio training and HIIT over a 24 hours period after the
workout.