The main principle behind weight loss from exercise is catabolism.
In simple terms if you can
get your body to require more
energy, your body will cooperate by breaking cells down to create it. This process known as metabolism is what
burns calories and results in weight loss if done correctly.
Interval training gets the job done best. I have my weight
loss clients and boot camp members do interval training at each session. The
reason being it really works! Interval training is simply adding a high-energy
burning component to your exercise plan on an infrequent, or interval, basis.
For example, if you can run for 20 minutes every other day,
you're boosting your metabolism and burning calories/energy. But you can
actually burn disproportionately more calories if, during that 20 minute run,
you add a 30 second or 1 minute sprint.
Why? Because during this 30 seconds or 1 minute, you give
your body a “wake up call “ and jolt it into fat burning mode.
And I mean jolt in a good way- just enough that your body has to rev
things up a bit more. To make up for the additional energy requirements, your
body will be forced to burn more calories than usual.
The reason interval training
is so effective is because of the metabolism-boosting
effects you get as a result and due to the fact that your body suddenly, needs
to find more energy and fast.
While it was happily moving along and supplying your energy
needs during your regular cardiovascular exercise, it suddenly needs to find
more for 30 seconds or even a minute; during that time it will increase your
metabolism even further.
However if you decided to increase your 30 second or 1 minute
sprint into a 20 minute sprint, you will not experience all of the benefits.
Indeed your body will utilise more energy when you are
exercising in the upper ranges of your aerobic training zone. But your body
will not get the jolt it gets from
interval training.
Interval training can last longer than 30 seconds or 1
minute. Some experts suggest that you can use interval training for 30-40
minutes, depending on your health and overall exercise programme. I think 20
minutes is ideal, you can finish off the workout with some resistance exercise
and core work.
Also interval training is more interesting- it breaks up the
sometimes monotonous aspect of steady state cardiovascular exercise.
Remember to not overdo it with your interval training like
any exercise. Your goal here is to become healthier and stronger, and lose some
adipose tissue in the process.
You will gain nothing if you run or cycle so hard during
the intervals that you get hurt. Men are particularly prone to fall into this
trap- forgetting they have not exercised for months or years! You will actually
undermine your own health, and possibly have to stop exercising while torn
muscles or other ailments heal.
Mark Hayward Personal Training, Aylesbury, Bucks