The findings of impaired pulmonary function in overweight children highlight an important concern
that decreased lung capacity leads to decreased exercise capacity, followed by decrease in physical
activities, leading to a vicious cycle of impaired lifestyle and overweight. Li et al. found reduction
in functional residual capacity and diffusion impairment were the most common abnormalities in
a cohort of obese patients. Reduction in static lung volume was correlated with the degree of obesity
[33]. Lazarus et al., in a randomized population sample of 2500 Australian adolescents, found
decreased pulmonary function with increasing adiposity [34]. Because the fall in pulmonary function
was severe in obese boys and these falls were correlated with body mass index and skinfolds,
it is concluded that diagnosis and management may improve aerobic exercise performance and
participation in obese children.
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