Friday 30 August 2013

Should You Do Cardio Prior To Weight Training?

By Russ Howe


There are many questions in the fitness world which cause much confusion. If you were to ask ten fitness instructors for tips on how to lose weight, it's likely you'd get several very conflicting answers. Today's question in focus is this - should you do cardio before or after weights?

The facts behind this question are very clear so today you will discover the answer.

Let us begin by looking at the most common myth associated with this question. Many people believe that by doing cardiovascular exercise before resistance training you will leave your muscles zapped of strength and restrict your ability on the weights, therefore it would make natural sense to go with hitting the weights first and doing your cardiovascular activity at the end.

This is a theory which stands up nicely when you say it out loud, but loses credibility when you look at the facts scientifically.

You see, in order to get to the bottom of this popular gym myth we have no choice but to look at things on a scientific level. The body makes several noteworthy changes during your time on the gym floor, some of which are hugely important in answering this question. The first of which is m-TOR release.

This is the enzyme responsible for signalling the start of the muscle building process after a heavy weights session. It is not uncommon to see this name on the front of various protein supplements, which all claim to cause an increase in m-TOR release to help you build more lean muscle after a hard workout. The body increases m-TOR for up to six hours after a resistance workout, making it easier for you to build lean muscle temporarily.

When you do cardiovascular activity the body releases an enzyme called AMPK instead. This helps the body adapt to aerobic exercise.

Here is the real kicker - AMPK release blunts m-TOR release significantly!

So now you should be beginning to see that the last thing you should be doing following a hard resistance training session is jumping on an upright cycle and peddling for an hour! In doing so, your body will be forcing itself to wipe out much of the increased m-TOR release you caused by training with weights.

Also, a study from northern California looked into the theory that pre workout cardiovascular activity would zap strength from the muscles. What they discovered was quite shocking. Like we said earlier, theories do not always play out the way you expect them to. Subjects noticed that pre workout cardio only had a negative impact on the muscles which were used during the cardio itself, for example if the cardio was legs based then leg exercises would be impacted, but every upper body move remained just as powerful. Combine this with the fact that pre workout cardio also allows you to get the full benefits of increased m-TOR levels and you can see why pre workout cardiovascular exercise is scientifically recommended as the way to go here.

Learning how to lose weight can be a confusing path, with many conflicting opinions often causing confusion along the way. The next time somebody asks should you do cardio before or after weights, you can help the with the latest scientific research rather than gym myths.




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