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discussed earlier, is to drastically decrease this value so that the fresh air that you inhale is mixed with a smaller volume of oxygen-poor air.

Lung volumes and capacities differ markedly in different hatha yoga postures and practices. For example, agni sara (chapter 3) almost obliterates the expiratory reserve volume and increases the tidal volume from 500 ml to possibly 1,600 ml (figs. 3.31-33); inverted postures (chapters 8 and 9) decrease the expiratory reserve volume and shift the tidal volume closer to the residual volume; and the bellows breath, which will be discussed at length later in this chapter, minimizes the tidal volume.

The anatomic dead space is another extremely important clinical value—the air-filled space taken up by the airways, which include the nasal passages, pharynx, larynx, trachea, right and left primary bronchi, and the branches of the bronchial tree that lead to the alveoli. It is called a dead space because it does not, unlike the alveoli, transport oxygen into the blood and carbon dioxide out. This space ordinarily totals about 150 ml, so for a tidal volume of 500 ml, only 350 ml of fresh air actually gets to the alveoli. You can get an immediate idea of its significance when you are snorkcling. Ifyou breathe through a snorkel tube with a volume of 100 ml, the practical size of the anatomic dead space increases from 150 ml to 2so

Lung Volume For Teenagers

residual expiratory tidal inspiratory functional nspniatory vital total lung volume reserve volume reserve residual capacity capacity capacity volume volume capacity

Figure 2.13. The four lung volumes(on the left) and the four lung capacities (on the right). The latter are combinations of two or more lung volumes. All the values are simulations for a healthy young man.

residual expiratory tidal inspiratory functional nspniatory vital total lung volume reserve volume reserve residual capacity capacity capacity volume volume capacity

Figure 2.13. The four lung volumes(on the left) and the four lung capacities (on the right). The latter are combinations of two or more lung volumes. All the values are simulations for a healthy young man.

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The Hindu-Yogi Science of Breath

The Hindu-Yogi Science of Breath

A complete guide on Eastern practices of breathing, mental, psychic and spiritual development. The book teaches that Yoga is divided into several branches, ranging from that which teaches the control of the body, to that which teaches the attainment of the highest spiritual development.

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