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Combined Influence of Inspiratory Loading and Subsystolic Cuff Inflation on Blood Pressure: Impact of Inspiratory Muscle Training

Cardiovascular adjustments to exercise, including increases in blood pressure (MAP) and heart rate, occur in response to several neural mechanisms. Specifically, stimulation of respiratory (via inspiratory loading (IL)) and locomotor muscle (via subsystolic cuff inflation (CUFF)) neurologic feedback via group III/IV afferents augments the MAP response during exercise. Further, we have recently shown that simultaneous stimulation of the respiratory and locomotor muscle afferents during exercise potentiates the MAP increase compared to when these reflexes are stimulated individually. To date, interventional strategies to attenuate the augmented MAP during IL+CUFF have not been investigated. Previous studies have shown that inspiratory muscle training (IMT) attenuates the IL‐induced increase in MAP at rest in healthy adults. We hypothesized that 8 weeks of IMT will attenuate the IL+CUFF‐induced increase in MAP during exercise in healthy adults.