Sunday, April 21, 2013

Is Cardio Better Before Or After Resistance Training?

By Russ Howe


One of the most regularly asked questions in the fitness industry is 'Should you do cardio before or after weights for better fat loss and muscle growth?' Lots of people are lost in the subject of how to build muscle so today we'll clear up the science behind this subject for you.

It is not uncommon to hear a different answer each time you ask somebody for advice in the gym. That's because a lot of the health and fitness industry is built upon opinion rather than fact. There are many areas which haven't yet been scientifically researched enough and, until recently, this was one of those areas.

Thankfully, several high profile studies have now been carried out and confirmed the answer to this common gym query.

Contrary to mainstream opinion, you should be performing your cardiovascular workout prior to hitting the weights if you want to get the most out of the gym. This will surprise a few people out there, because one of the most common mistakes is to presume that you'd exhaust the muscles if you did your aerobic activity first.

These recent findings lay to waste one of the oldest theories in fitness. It dates back so long that many people believe it to be fact and still insist on doing it to this very day. However, scientific studies prove that those who put their aerobic activity earlier in their workout enjoyed better fat loss and muscle growth.

Even subjects who were performing HIIT got the same overall results.

This happens because of the release of two enzymes in the body during physical exercise. They are known as AMPK and mTOR. AMPK is the body's call to action to help you adjust to aerobic activity.

When you finish a resistance workout, however, the body responds by increasing the release of an enzyme known as mTOR. This turns on the recovery process and helps you to build more lean muscle. The 2 enzymes don't work together well. In fact, having AMPK in your system will switch off the release of mTOR. So, by staying on a treadmill after your finish your weight training you'll significantly turn down your release of mTOR.

When the body increases it's release of mTOR enzyme it's signalling the beginning of the so-called 'golden window' for nutrition. This is the often fabled period of time where your body will make the most of any nutrients you provide it with. Release is increased for up to six hours.

This information comes in very handy for those who like to separate their workouts into two separate sessions per day. If you keep six hours between each workout you'll be able to get the full benefits of the muscle repairing process switched on by mTOR enzyme before you release any AMPK during cardiovascular activity.

If you were wondering how to build muscle by optimizing your resistance/cardio split you now have the latest scientific findings to help you do that. Whether you currently do cardio before or after weights doesn't really matter, it's what you do from this point on which counts towards your future results.




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