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Muscle Contraction

Muscle Contraction
Muscle Contraction

Muscle Contraction:

Skeletal muscles are made up of thousands of muscle fibers, and each fiber consists of many muscle cells strung end to end, when a muscle fiber contracts—shortens in length—it follows a principle called “all or nothing,” This means that each individual muscle cell either contracts completely or does not contract at all. And it is crucial to understand that using maximum weights ensures that a maximum number of individual muscle cells are contracted.

This brings us to the most fundamental of all training principles, the Weider Overload Training principles. The overload principle says that a muscle responds by growing in hypertrophy after it is stressed with a load greater than it is used to handling. And by progressively increasing resistance overload on the muscle, you can continue to cause it to grow in mass and strength.

To induce a skeletal muscle to continue to grow in mass and strength, you must use a procedure called resistance progression. In the progression of resistance you are required to gradually increase the number of repetitions done in an exercise from a “lower guide number” to the “upper guide number.” When the upper guide number is reached, 5-10 pounds are added to the bar, reps are reduced to the lower guide number, and the process is repeated.

Assuming that you are required to do one set of 8-12 repetitions of a bench press movement, you will find an example of four weeks of progression for the movement in the figure below. In this example, “50 x 8” means to do 8 repetitions with 50 pounds.
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