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Design
Review
May refine cardiopulmonary exercise test interpretation; leaves open prospective trials on EFL-targeted interventions.
In Brief Ventilatory limitation to exercise remains an important unresolved clinical issue; as a result, many individuals misinterpret the effects of expiratory flow limitation as an all-or-nothing phenomenon. Expiratory flow limitation is not all or none; approaching maximal expiratory flow can have important effects not only on ventilatory capacity but also on breathing mechanics, ventilatory control, and possibly exertional dyspnea and exercise intolerance. Expiratory flow limitation is not an all-or-nothing phenomenon; approaching maximal expiratory flow can have important effects on breathing during exercise.
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Tony G. Babb (2012) studied this question.
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