Glen, Kenny,Journeay, William Shane2013-11-072013-11-0720032003Source: Masters Abstracts International, Volume: 42-06, page: 2083.http://hdl.handle.net/10393/26496http://dx.doi.org/10.20381/ruor-18214Purpose. Study #1 examined the responses to facial immersion under states of altered cardiac filling. Study #2 sought to examine changes in postexercise hemodynamics and skin blood flow (SkBF) when lower blood pooling was manipulated using lower body pressure. Methods. Study #1---Six male subjects participated. They performed 30-s apneic facial immersions under: LBNP, LBPP, during post-exercise hypotension (PEH); & Control. MAP, HR, and SkBF were measured. Study #2---Subjects were exposed to LBNP, LBPP; or no pressure after 15-mins of cycle exercise at 70% of VO2 peak. HR, CO, SV, MAP, TPR, & SkBF, skin and esophageal temperature were recorded. Conclusions. Study #1---Cardiac parasympathetic response during facial immersion can be attenuated when cardiac filling is compromised. Study #2---(1) LBPP accelerates recovery of baseline hemodynamics while LBNP exacerbates the postexercise hemodynamic state relative to control. (2) Altering postexercise hemodynamics via LBPP may affect thermal responses.105 p.enBiology, Animal Physiology.Health Sciences, Recreation.Thesis