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Single and multiple breath washout experiments Increased ventilation heterogeneity is a characteristic physiological abnormality observed in respiratory diseases such as asthma and COPD (85, 86)

There is a growing understanding that our environment is not only our iconic wilderness and rural areas, but also the urban areas where most of us live and work

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Engaging in high-intensity exercise training has been shown to induce significant gains in lung volumes during adolescence for example, vigorous aerobic activity was associated with measurable increases in both FEV and FVC in a recent adolescent cohort study ( Alongside spirometric lung volumes, the maximal oxygen uptake capacity (VO max) also expands during the teenage years, driven by growth and hormonal changes of puberty (67)

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