In the early 1970’s, a real appreciation of the superior effects of negative training began to take hold. But until now, there hasn’t been any qualified method to provide precision focus and direction to the movement.
Today research clearly supports the concept that negative (eccentric) training significantly improves muscular size and strength. And that even better results can be achieved by combining this with positive (concentric) training.
Negative training means that it takes less time to reach muscular failure and therefore to enhance muscular size and strength. It also involves a heavier than normal overload, which means more force output and more muscle fibers recruited.
This type of training insures a higher level of stress per motor unit, which supplies greater stimulation of the involved muscle fibres and works the entire joint structure, which results in more strength, stability, range motion and healing process.
Negative training transfers strength gains to concentric work, it maintains strength gains longer and allows greater work in less time.