The Types Of Muscle Fiber

Learning The Muscle Fiber Types

By Vince DelMonte

Choosing the best type of workout program that will stimulate the muscle fiber type that will get you the results you’re looking for is extremely important.

Unfortunately, all body building programs are not created equally when speaking in terms of muscle fiber types.

While you can’t differentiate between muscle fibers from your outside appearance, on the inside of the muscle tissue body, there are three main different fibers present.

Type A Fast-Twitch Muscle Fibers

The first type of muscle fibers are known as Type A Fast Twitch and are responsible for the most forceful contractions generated, however, will fatigue the fastest.

For example, if you were to perform an all out set of 3 reps for bench press, you would predominately be using these type A muscle fibers.

They tend to have very large motor neurons and very low mitochondrial density. They also have a low oxidative capacity, meaning they will not be able to utilize oxygen very well. It is for this reason that they are not suited to endurance type of activities, because during these exercise variations, oxygen must be present in order to sustain the muscular contractions.

The major type of fuel that these muscle fibers are going to rely on is creatine phosphate and stored muscle glycogen (glucose). They will not utilize stored body fat at all due to the fact that they are only able to continually contract for between one and about 20 seconds.

Type B Fast-Twitch Muscle Fibers

The next muscle fiber is also classified as a fast twitch muscle fiber but not to the extent that type A are.

This muscle fiber type is mostly utilized in activities that are relatively short in duration, but are not at an all out pace.

For example, if you were to sprint 100 meters, you’ll be using mostly type A. If on the other hand, you are to do a running interval at about 80-90% of your max capacity for 30 seconds, this would utilize the type 2A more.

Some of the characteristics of the type B muscle fibers are that they still have a large motor neuron (not as large as Type A though), they are on the intermediate scale as far as being resistant to fatigue, and they have a high degree of mitochondrial density.

These muscle fiber types are also able to use oxygen to a great extent, as demonstrated by their higher resistance to fatigue and longer duration of contraction abilities.

Slow Twitch

Finally, the third type of muscle fiber that you have in your body is classified as slow-twitch.

This is the muscle fiber type you would use if you were to run a marathon or any other extended duration, medium-to-low intensity activity.

These muscle fibers have a very high ability to resist fatigue and have a large oxidative capacity.

They are also relatively slow to contract, therefore you cannot expect a great deal of force generation from these muscles, and thus, will not be intended for exercises requiring a high degree of power.

They are very high in terms of mitochondrial density and have a large number of capillaries running throughout their bodies. This is to enable sufficient oxygen to get to the muscle tissues so that they can carry on the extended duration of muscular work they are intended to do.

These are also the muscle fibers that will also rely more on fat as fuel, as opposed to strictly using carbohydrates or creatine phosphate.

Training The Muscle Fiber Types

So, now that you’re familiar with the three major classes of muscle fiber types, it’s time to recognize how you would train each effectively.

Since type A are your primary force generators, if you wish to get a higher performance from them you’ll need to train using exercises that require you to max out your effort for a short period of time.

Think sprinting at full speed, 1-5 rep sets for lifting, and any type of plyometric activities.

Next, to train your type B muscles fibers you’ll want to slightly decrease the force with which you are to contract while simultaneously increasing the time over which you contract ever so slightly.

For example, perform 30-45 intervals repeated ten times with about a minute or a minute and a half at a low to moderate pace. For your weight training activities, aim to target the 6-10 rep range to utilize the fact these muscle fibers have a higher oxidation ability.

Finally, to improve your slow twitch muscle fibers, think endurance. This type of fiber will usually require the greatest amount of time to train for improvement because you’ll want to focus on simply going ‘longer’.

If you’re a runner, try and run longer. If you’re a biker, bike longer. If you’re a swimmer, swim longer – you get the point.

This type of muscle has the ability to go for extended periods of time so this is exactly what you want to train it to do.

So, next time you are trying to sort out your training plan make sure to take the various muscle fiber types into consideration.

Doing so will allow you to make the most out of your training program so you get the exact results you’re looking for.

Vince DelMonte is the author of No Nonsense Muscle Building.

More Tips On How To Lose Weight

In today's world, almost everywhere you look people are looking for weight loss tips. Weight loss has become the primary objective of those who are going to the gym. They want to lose weight and they want it NOW. Luckily, there are some weight loss tips that will make this process a great deal easier, ensuring that you can succeed without feeling like you're putting your body through torture.

Calorie Intake

The first couple quick weight loss tips are number one, be sure that your calorie intake is not too extreme. Think about it. Put yourself on a starvation diet and you are just asking for a rebound binge. Sure, you may have great will power and will be able to withhold for a few days, but you will soon cave and when you do, chances are you'll eat a vast quantity of food in response to starving for so long.

If your caloric intake is too low to begin then where will you go when you hit a plateau? For example, a male will be far more successful starting with 2800 calories and dropping 200 calories every 2 weeks as he evaluates his progress instead of starting at 2000 calories and only having one direction to go - starvation which will eventually turn off his metabolism and stall his weight loss progress.

Gradual Progression

Secondly, keep in mind current "nutrition level." Do you really need a bodybuilder pre-contest diet or do you just need to start with the basics? If you begin with a meal plan that is too extreme then you will not be able to follow it and regardless of how well the diet is designed, if you aren't able to stick with it, it isn't going to work very well. My favorite line of mine is, "The best diet that works is the one that you follow." Adopting a more gradual nutrition approach, just like your training, would help with your adherence levels, which would then translate to you being better able to maintain it. One of the best weight loss tips I gave a client who was eating 2 double cheese burgers a day was to start eating one double cheese burger! Why didn't I recommend he eat a steamed chicken breast instead since that is the superior choice? The steamed chicken breast, obviously the mores superior choice would be too much of a change and not create adherence and eventually failure.

Celebrate With a 10% Meal

Another few fast weight loss tips are that you should always be incorporate a "victory meal" to reflect your accomplishment and progress. If you have gone a few weeks without any cheat meals and are dropping consistently then kick back and have a beer or do something that is "rewarding" - just don't get too carried away and don't get back on track. You won't sabotage weeks of dieting with one "victory meal" as long as you don't adopt a mindset that this celebration represents an "ending." The key is to not get carried away and to use this as a reward, refocus and get ready for another 4-8 weeks of hard training and dieting. Consider a "celebration meal" every few weeks and then get back on track!

Smart Exercise Program

Next up, when selecting the exercise program you'll go on, again, be sure not to choose something that's overly extreme. Too much cardio can actually hinder your results, so you'll want to avoid that as much as possible. Three to four sessions a week along with a properly planned out diet should be plenty to get you seeing results. If you are having to do hours a day in order to just lose a pound, something else is off with either your diet (most likely) or your weight training program.

Clear The Clutter

Finally, the last quick weight loss tip to keep in mind is that before starting any diet program, you should rid the house of any foods that could be problematic. If the food is not readily available, it makes it sort of hard to eat it. Consider you home a "haven" and that it's one thing to have slip ups occur outside of your home but not inside of your home where you can control what is coming in and out. Sabotaging your own weight loss success, in your own home, is embarrassing.

By clearing yourself of the problem foods before you start, you overcome a huge obstacle already.

Replace these 'bad' foods with ones that are much healthier and will still taste good, so when you do get hungry, they are what you reach for rather than the old foods which caused your weight gain in the first place.

Three Easy Tips On How To Lose Weight!

Three Easy Tips On How To Lose Weight!

I know, as soon as you saw the words "easy" and "lose weight" in the headline, you were ready to write this off as another one of those gimmicks or programs sound too good to be true and usually are. But bear with me and you'll learn the 3 easy tips on how to lose weight that I guarantee will help you in your weight loss efforts.

You've probably been conditioned to believe that weight loss had to be tied to countless hours at the gym, the latest supplement breakthroughs or eating nothing but celery stalks and tofu. Fortunately, dropping a couple dress sizes doesn't take anything that drastic. What it does take is making some small changes in the behaviors that led to the addition of those unwanted pounds. Here are 3 lifestyle changes that will immediately help you lose that unwanted fat and get your body back.

First tip on how to lose weight-
Stop Eating Out. Think back to when you were growing up. Do you remember what the dinner plates looked like? Now compare that to what the "plates" look like at O'Charleys, Applebees or any of the other chain restaurants. It's no wonder we're gaining weight. There are dozens of studies about eating out and they all lead to one conclusion: if you eat out, you overeat! Not only is it almost impossible to exercise effective portion control when you eat out, but you're also compelled to get you money's worth so you eat everything you're served rather than stopping when you should.

The bottom line is that those who eat out consume more calories than those that don't. Take a break from eating out for the next six weeks and see how easily you can drop a dress size or even two. And you can use the money you saved eating at home to buy a couple of new outfits to showcase your improved body.

Second tip on how to lose weight-
Eat Smaller Portions. You don't have to avoid the foods that you enjoy – you just can't eat big servings of them. An easy way to do this is to use smaller plates for your meals. This will help you fell like you're not depriving yourself while still exercising good judgment. And don't think that just because something is on your plate, you have to eat it. As opposed to what your mother told you, you don't have to ‘clean your plate.' In fact - you shouldn't. Eat slowly and stop when you aren't hungry any more. You'll quickly find that you can enjoy your favorite foods and your skinny jeans at the same time.

And the third tip on how to lose weight -
Make Better Choices. I know I just said that you can eat the foods you enjoy and still lose weight, but that doesn't mean overindulging on processed foods, candy, sodas and chips. The key is moderation. So when you go to the supermarket, do the bulk of your shopping around the perimeter of the store and spend less time in the isles. When you're at work, keep health snacks handy so you don't have to rely on the company's vending machine for your energy boost. But most importantly, make good choices with the meals that don't really matter. Your quality of life won't dramatically improve if you choose a cheeseburger over a grilled chicken salad for lunch, so don't do it. Save the times when you are going to choose foods that might be considered unsupportive for the meals that you really look forward to. Improving your choices will accelerate your weight loss and help you save unnecessary calories without really trying.

Obviously, there is nothing magic about any of these three tips on how to lose weight other than the results that they produce. So start applying these three simple ideas and prepare to get your body back.

About the Author

Holly Rigsby is a nationally recognized women’s fitness coach, certified personal trainer (CPT) and the author of the internationally popular e-book – Fit Yummy Mummy - Burn Your Baby Fat & Get Your Body Back. Go to FitMummy to get your FREE copy of her special report: "The Five Ways To Boost Your Metabolism."