A consistent path of resistance on any machine may result in early synchronization of motor units, motor fatigue and loss of dynamic support. It's clear that unless the athlete contorts his body below the bar while under load, the bar path is linear and unchanging. In the diagram on the bottom, the bar path on a Smith machine is demonstrated. This bar path will change during every repetition in attempt to minimize fatigue and loading of the working tissues specific to the motor task. This is clearly demonstrated by comparing the bar path of the traditional bench press and Smith machine bench press.(Figure 4) In fact, as explained in Part 1 of this article, the body is so committed to energy conservation and protecting tissues from overload, you could film the most elite lifters in the world and they would never produce the same bar path twice in a row! In the diagram on the top, you can see an estimated natural bar path when performing a free weight bench press exercise. This is an attempt to save energy (some MUs work while the others rest) and keep movements as smooth as possible.(23) In concert with asynchronous stimulation and up regulating motor unit activation from small to large (size principle), varying the path of resistance (bar path) is another important mechanism for conserving energy and preventing unwanted overload in specific tissues. Pattern Overload and Joint Health Current research clearly shows that the nervous system is capable of not only recruiting a specific muscle needed to perform a problem movement pattern, but it can also selectively recruit specific motor units, or segments within a given muscle.(22) When motor units (MU) are recruited to perform any movement (from a Preacher curl to a snatch), the body attempts to rely on asynchronous stimulation of the working units. In this installment I'll discuss How avoiding Pattern Overload is crucial if you care at all about your joints The World s Trusted Source & Community for Elite Fitness TrainingĬhances are you' re suffering from it by Paul Chek August 11, 2000JTags Training In Part 1 of this article, I demonstrated how Pattern Overload occurs and how machine training directly relates to creating Pattern Overload. Pattern Overload - Part 2 Search Skip to content Menu Menu follow us Store
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