The use of CPET for postdeployment pulmonary diagnoses showed a decrease in exercise capacity compared with normal controls. Although several ventilatory parameters were elevated in asthma and lower airway diseases, individuals diagnosed with only exertional dyspnea did not demonstrate changes. Propensity matching confirmed that CPET does not suggest undiagnosed respiratory disease during a normal postdeployment pulmonary evaluation.
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Morris et al. (2025) studied this question.
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