Principles And Methods of Physical Education And Hygiene By Wp Welpton
Principles And Methods of Physical Education And Hygiene By Wp Welpton
William P Welpton
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Attention quickly flags and fatigue readily sets in proofs that nervous vitality in these centres is diminished. The effects of muscular inactivity are equally obvious. The muscles become soft and flabby, the joints stiff; movements are executed with less intensity, effectiveness, and grace; active exercise is soon followed by fatigue. Total disuse of any organ, indeed, leads to an increasing loss of functional power. Inactivity begets degeneration. Just as fatigue has its effects on the whole ...system, so exercise not only influences the functional General power of an organ, but also modifies the life Exercise* processes of the whole organism. The general effects on the system as a whole are more immediately apparent in the case of muscular exercise than in that of nervous activity, because the muscles form by far the largest proportion of the body both by weight and by volume. Any tissue changes taking place in such a large mass cannot but have a marked influence on the life and functional activity of every other organ in the body.
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