Wednesday, August 28, 2013

Should You Do Cardio Before Weights Or After?

By Russ Howe


If you are trying to maximize lean muscle growth, should you do cardio before or after weights? This question is regularly asked in gyms around the world by folks trying to learn how to build muscle quickly and today we'll answer it with the latest scientific findings.

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.
The video today will explain whether you should do cardio before or after weights in the gym.


The most common misconception in this particular area is that you'll pre-exhaust your muscles by hitting cardiovascular equipment before a heavy resistance workout. This couldn't be further from the truth. In fact, you'll greatly enhance your gains if you do your aerobic activity first, so the old theory that cardiovascular exercise should be done after you've finished with the weights is not true.

Despite the old theory that you'll exhaust your muscles if you do aerobic work before resistance training, science proves that the opposite is true. Test subjects experienced better weight loss and muscular hypertrophy when they did aerobic work first.

This also applied to individuals performing high intensity interval training, too.

When you workout the body releases 2 enzymes which play a major role in your overall results. They are known as mTOR and AMPK. AMPK is designed to help you adapt to prolonged aerobic activity, so it's released as you do run on a treadmill or cycle.

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.

If you choose to separate your training into two sessions, bear in mind what we have just pointed out. Research shows that you should separate your two training sessions by at least six hours, so if you want to hit the weights first thing in the morning and then the treadmill later in the day that is absolutely fine, just ensure there is enough time between both sessions to maximize your results.

When you are trying to lean how to build muscle in the gym, you'll encounter many areas which are shrouded in mystery and doubt, often coming down to little more than personal opinion. Thanks to ongoing scientific research, however, the question 'Should you do cardio before or after weights?' is no longer something which falls into this category.




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