Many people have the misguided belief that cardio/aerobic activities such as running, cycling or using an elliptical machine are the best methods towards achieving fat loss. While these activities can be a compliment to a fat loss program, the science shows that they are not the most efficient means or activities to produce the best fat loss results.
Studies have proven that a properly structured resistance training program results in far greater fat loss than just cardio type activities alone. What happens, physiologically, during these cardio activities is that the body will burn calories during the activity, but generally will not have much effect on your RMR (resting metabolic rate). Up to 70% of a person's daily caloric expenditure can come from your RMR. So you can see the importance of doing activities that will cause an increase to one's RMR. Another problem is that people tend to do the same intensity and duration of these activities. After time, the body learns to adapt to these efforts, meaning it will require less energy (calories) for each effort. Lastly, these type of activities do not increase ones lean muscle mass.
Now for some of the reasons that a properly structured resistance training program will lead to greater fats loss! First off, building lean muscle mass will increase your RMR. Muscle is very metabolic, meaning that muscles use calories. That's where you get the increase in your RMR. Another advantage of a properly structured resistance training program is a physiological process called Excessive Post Exercise Oxygen Consumption or EPOC. Basically, the body goes into oxygen debt after a workout. Depending on the workout program, intensity and duration this EPOC effect can increase your RMR for 24-36 hours. I think that is very significant if fat loss is your goal. So, if you do a properly structured program 3-4 times per week and focus on proper nutrition, your fat loss goals will be achieved.
A properly structured resistance training program can be a corrective exercise program also. Basically , this means that a proper program can correct muscular imbalances, muscular dysfunctions or postural issues that one has created. Whether it is from sedentary lifestyles (excessive sitting is very detrimental to one's posture - our society sits way too much, i.e.: couches, cars, cubicles etc.), injuries or any muscle imbalances we create from repetitive movements such as running, cycling, elliptical or other activities.
Again, with a properly structured program you will get your fat loss results and increase lean muscle mass which will give you that lean physique you are striving for.
