"Exercises of speed increase the activity of the respiratory organs
with much less fatigue of the lungs and heart than is created by
strength exercises, owing to the absence of forced muscular effort.
Such effort occurs only accidentally in exercises of speed, but is
compulsory in exercises of strength. But exercises of speed will
not develop the bulk and strength of muscle as are developed by
strength work, for there is a smaller supply of blood forced into
the muscles during and after speed work; therefore, the nutrition
of the muscle is less active during this kind of work. It is a
physiological fact that the nutrition of any part of the body is in
direct proportion to the quantity of blood with which it is
supplied. But while exercises of speed fall short as developers of
muscles, they are much better for the internal organs and they
increase the size of the chest and lung capacity - effects of great
health importance. Speed work naturally requires more concentration
and more power of will in the performance of the movements." -
Earle Liederman Visit our website and see our many books at
PhysicalCultureBooks.com
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