Why the study?
Does systematic physical training reduce anatomical R-L shunt at rest and improve pulmonary diffusing capacity during near-maximal exercise in boys aged 11-13 years?
Does systematic physical training reduce anatomical R-L shunt at rest and improve pulmonary diffusing capacity during near-maximal exercise in boys aged 11-13 years?
Systematic physical training in boys aged 11-13 years reduces resting anatomical R-L shunt but does not change pulmonary diffusing capacity during near-maximal exercise.
Should not yet change practice in boys; leaves open whether training modulates shunts or DLCO and needs randomized confirmation.
Anatomical R-L shunt at rest and the pulmonary diffusing capacity during near-maximal exercise were studied in 9 boys aged 11 to 13 years before and after a 16-week period of systematic physical training. Physical training resulted in a significant decrease of resting anatomical R–L shunt from 4.6 to 2.9 per cent of cardiac output, corresponding to a Pao2 of 607 and 635 mm Hg during oxygen breathing respectively. Physical training failed to induce any change in exercise DLCO despite a significant increase of cardiac output and ventilation.
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Koch et al. (1973) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: