26. To increase the strength of
the muscle work is the muscle
contraction intensely
increased?

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An increase in strength of the
work is not by increase
in intensity of the of
each muscle . The muscle fiber
an all-or-nothing rule, .e., its
contraction strength only one and
be increased.

When body needs to the
strength of muscle work a
known asspatial
summation : new muscle fibers
recruited in addition the fibers
already action. So the of the
muscle increases only when
number of active cells
increases.