Why barbells?

[Eli]

The reason that isolated body-part training on machines doesn't work is the same reason that barbells work so well, better than any other tools we can use to gain strength. The human body functions as a complete system – it works that way, and it likes to be trained that way. It doesn't like to be separated into its constituent components and then have those components exercised separately, since the strength obtained from training will not be utilized in this way. The general pattern of strength acquisition must be the same as that in which the strength will be used, a principle known as Training Specificity. The nervous system controls the muscles, and the relationship between them is referred to as "neuromuscular". Neuromuscular specificity is an unfortunate reality, and exercise programs must respect this principle the same way they respect the Law of Gravity.

Barbells, and the primary exercises we use them to do, are far superior to any other training tools that have ever been devised. Properly performed, full range-of-motion barbell exercises are essentially the functional expression of human skeletal and muscular anatomy under a load. The exercise is controlled by and the result of each trainee's particular movement patterns, minutely fine-tuned by each individual limb strength, muscular attachment position, strength level, flexibility, and neuromuscular efficiency. Balance between all the muscles involved in a movement is inherent in the exercise, since all the muscles involved contribute their anatomically determined share of the work. Muscles move the joints between the bones which transfer force to the load, and the way this is done is a function of the design of the system – when that system is used in the manner of its design, it functions optimally, and training should follow this design. Barbells allow weight to be moved in exactly the way the body is designed to move it, since every aspect of the movement is determined by the body.

Machines, on the other hand, force the body to move the weight according to the design of the machine. This places some rather serious limitations on the ability of the exercise to meet the specific needs of the athlete. For instance, there is no way for a human being to utilize the quadriceps muscles in isolation from the hamstrings in any movement pattern that exists except on a machine designed for this purpose. No natural movement can be performed that does this. Quadriceps and hamstrings always function together, at the same time, to balance the forces on either side of the knee. Since they always work together, why should they be exercised separately? Because somebody invented a machine that lets us?
Even machines that allow multiple joints to be worked at the same time are less than optimal, since the pattern of the movement through space is determined by the machine, not the individual biomechanics of the human using it. Barbells permit the minute adjustments during the movement that allow individual anthropometry to be expressed.
Furthermore, barbells require the individual to make these adjustments, and any other ones that might be necessary to retain control over the movement of the weight. This aspect of exercise cannot be overstated – the control of the bar, and the balance and coordination demanded of the trainee, are unique to barbell exercise and completely absent in machine-based training. Since every aspect of the movement of the load is controlled by the trainee, every aspect of that movement is being trained.

There are other benefits as well. All of the exercises described in this book, and most other barbell assistance exercises, involve varying degrees of skeletal loading. After all, the bones are what ultimately support the weight on the bar. Bone is living, stress-responsive tissue, just like muscle, ligament, tendon, skin, nerve, and brain. It adapts to exercise just like any other tissue, and becomes denser and harder in response to heavier weight. This aspect of barbell training is very important to older trainees and women, whose bone density is a major factor in continued health.
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The only problem with barbell training is the fact that the vast, overwhelming majority of people don't know how to do it correctly. This is sufficiently serious and legitimate a concern as to justifiably discourage many people from training with barbells in the absence of qualified instruction. And if most people don't know how to use barbells correctly, even fewer know how to teach their use. Most people who claim to know how don't. Adding to the problem is the fact that there are very few places to learn how to teach barbell training. It requires extensive personal experience with barbells, an ability to communicate this experience, and the capacity to adjust to the needs and abilities of the individual being instructed.

תוספת מעמוד אחר:

For novices, and in fact for many more advanced trainees, a very simple approach to training should be taken. Effective workouts need not be long, complicated affairs. Many people are under the impression that progress in the weight room means learning more ways to curl, the basic one or two not being sufficiently numerous. Progress means more strength, not more exercises. It is not necessary to do many different exercises to get strong – it is necessary to get strong on a very few important exercises, movements that train the whole body as a system, not as a collection of separate body parts.

מתוך:
Strarting Strength
Mark Rippetoe
with Lon Kilgore

[Bullet]

חח הקלדת את זה? יפה מאוד

[shikoLM]

מתמצת את כל העניין. תקף לכל מתאמן מהשורה כולל מתאמנים חדשים.
כל הכבוד אלי.

[שריר]

אחלה מאמר אבל מה קשה למה כ"כ קשה לאנשים להשתמש בbarbells ולבצע כנמו שצריך?