The independent effects of hydrostatic pressure and hypercapnic breathing during water immersion on ventilatory sensitivity and cerebrovascular reactivity
James R. Sackett,
Zachary J. Schlader,
David Hostler
et al.
Abstract:Head out water immersion (HOWI) induces ventilatory and hemodynamic changes, which may be a result of hydrostatic pressure, augmented arterial CO2 tension, or a combination of both. We hypothesized that the hydrostatic pressure and elevated CO2 tension that occur during HOWI will contribute to an augmented ventilatory sensitivity to CO2 and an attenuated cerebrovascular reactivity to CO2 during water immersion. Twelve subjects (age: 24±3 y, BMI: 25±3 kg/m2) completed HOWI, waist water immersion with CO2 (WWI+C… Show more
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