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TTIE BREATHING APPARATUS.
the breathing of repose, and the second action in the breathing for action and for voice.
29. Breathing of Physical Education.—Teachers of Physical Education make use of a form of breathing, which they call " deep breathing." During inspiration they stretch the chest by bending the head and spine backwards, or by dragging the shoulders backwards, or by forcing the abdomen inwards. This form of breathing brings into play what are called in medical language " the extraordinary muscles of respiration " (a form of breathing used by patients suffering from an obstruction in the air-passages). This kind of inspiration not only stiffens the chest and gives too much work to the upper part and too little to the middle and lower parts, but it hampers the action of the true respiratory muscles, the intercostals, and the diaphragm. Inasmuch as it causes too much movement of the upper part of the chest as compared with the other parts, it ought to be called M high breathing," not " deep breathing." This laboured movement of the upper chest in inspiration cannot be easily controlled during expiration and is altogether unfit for voice. The chest wall must he hept as free as possible.