Why Performing Cardio Before Weights Is Better For Building Lean Muscle

By Howe Russ


Today's question is one of the most popular among those who are trying to learn how to lose weight, should you perform cardio before or after weights? Today you'll discover the factual answer to this often debated topic.

For many years, this was a subject which was usually answered with personal opinion. There was no real proof whether it was more effective to perform cardiovascular activity before or after a workout, so most people would simply do what worked for their own body and pass on their findings to others.

Recent studies showed beyond any doubt that performing a cardiovascular workout before resistance training was far more effective than doing it the other way around. Today we'll be delving into two of the most well documented studies in this area, showing you why they reached their controversial conclusions. []

Participants in a study at the James Maddison University were subjected to an exercise program over a number of months where one group followed a cardio/weights spit and the others followed a weights/cardio split. The muscle growth in those who did their resistance training first was substantially lower than those on the opposite routine.

Furthermore, the Journal of Strength and Conditioning recently carried out a study on this topic to discover the fat loss benefits, too. Their findings were similar. Those who performed aerobic exercise before hitting the iron were able to increase fat loss results considerably over the group of case studies doing it the opposite way around.

Those facts may be controversial to many fitness enthusiasts, who opt to perform their resistance training first. The theory behind that method is that they don't want their muscles to be tired by aerobic exercise when they begin pushing out repetitions. This makes sense and it's an approach which does yield results. However, science suggests that switching them around is far superior for both fat loss and lean muscle development.

The main findings of recent studies focus on the effects of two enzymes:

* AMPK (aka adenosine monophosphate-activated protein kinase)

* mTOR (aka mammalian target of rapamycin)

While mTOR is the enzyme responsible for kick-starting the body into the muscle building process at the end of a tough resistance workout, AMPK gets released during aerobic activity to adjust the body for endurance. For around 60 minutes after a workout you'll have a surge of mTOR, meaning the golden window for nutrition is this period if your goal is to gain lean muscle and burn excess fat. This surge lasts around 6 hours. []

If you finish your weight training and then sit on a bike for 45 minutes you have not only wasted the bulk of your golden nutrition window, you have also made a fatal mistake. When the body releases AMPK, i.e. during cardiovascular exercise, this hormone doesn't co-exist with mTOR and actually kills it off.

Learning how to lose weight is a journey often shrouded in myths and opinions. However, thanks to the benefits of modern science you now know the true facts behind whether you should do cardio before or after weights to maximize your fat loss results in the gym.




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