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There are a total of 13 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Effect of gender on vestibular sympathoexcitation
Author(s): Ray, C. A.
Abstract: Studies have suggested that premenopausal women are more prone to orthostatic intolerance than men. Additionally, it has been postulated that the vestibulosympathetic reflex is important in regulating postural-related ...
NASA Center: NASA (non Center Specific) Publication Year: 2000
Added to NTRS: 2006-08-02
Document ID: 20040112743
Comparison of sympathetic nerve responses to neck and forearm isometric exercise
Author(s): Steele, S. L. Jr; Ray, C. A.
Abstract: PURPOSE: Although the autonomic and cardiovascular responses to arm and leg exercise have been studied, the sympathetic adjustments to exercise of the neck have not. The purpose of the present study was twofold: 1) to ...
NASA Center: NASA (non Center Specific) Publication Year: 2000
Added to NTRS: 2006-08-02
Document ID: 20040141512
Muscle pain perception and sympathetic nerve activity to exercise during opioid modulation
Author(s): Cook, D. B.; O'Connor, P. J.; Ray, C. A.
Abstract: The purpose of this experiment was to examine the effects of the endogenous opioid system on forearm muscle pain and muscle sympathetic nerve activity (MSNA) during dynamic fatiguing exercise. Twelve college-age men (24 /- 4 ...
NASA Center: NASA (non Center Specific) Publication Year: 2000
Added to NTRS: 2006-08-02
Document ID: 20040112702
Hindlimb unweighting decreases endothelium-dependent dilation and eNOS expression in soleus not gastrocnemius
Author(s): Woodman, C. R.; Schrage, W. G.; Rush, J. W.; Ray, C. A.; Price, E. M.; Hasser, E. M.; Laughlin, M. H.
Abstract: We tested the hypothesis that hindlimb unweighting (HLU) decreases endothelium-dependent vasodilation and expression of endothelial nitric oxide synthase (eNOS) and superoxide dismutase-1 (SOD-1) in arteries of skeletal ...
NASA Center: NASA (non Center Specific) Publication Year: 2001
Added to NTRS: 2006-08-02
Document ID: 20040112323
Neck afferent involvement in cardiovascular control during movement
Author(s): Bolton, P. S.; Ray, C. A.
Abstract: It is well established that labyrinth and neck afferent information contributes to the regulation of somatomotor function during movement and changes in posture. There is also convincing evidence that the vestibular system ...
NASA Center: NASA (non Center Specific) Publication Year: 2000
Added to NTRS: 2006-08-02
Document ID: 20040112717
Interaction between vestibulosympathetic and skeletal muscle reflexes on sympathetic activity in humans
Author(s): Ray, C. A.
Abstract: Evidence from animals indicates that skeletal muscle afferents activate the vestibular nuclei and that both vestibular and skeletal muscle afferents have inputs to the ventrolateral medulla. The purpose of the present study ...
NASA Center: NASA (non Center Specific) Publication Year: 2001
Added to NTRS: 2006-08-02
Document ID: 20040112642
Vestibular activation of sympathetic nerve activity
Author(s): Ray, C. A.; Carter, J. R.
Abstract: AIM: The vestibulosympathetic reflex refers to sympathetic nerve activation by the vestibular system. Animal studies indicate that the vestibular system assists in blood pressure regulation during orthostasis. Although human ...
NASA Center: NASA (non Center Specific) Publication Year: 2003
Added to NTRS: 2006-08-02
Document ID: 20040087816
Sympathetic adaptations to one-legged training
Author(s): Ray, C. A.
Abstract: The purpose of the present study was to determine the effect of leg exercise training on sympathetic nerve responses at rest and during dynamic exercise. Six men were trained by using high-intensity interval and prolonged ...
NASA Center: NASA (non Center Specific) Publication Year: 1999
Added to NTRS: 2006-08-02
Document ID: 20040141972
Muscle sympathetic nerve responses to physiological changes in prostaglandin production in humans
Author(s): Doerzbacher, K. J.; Ray, C. A.
Abstract: Previous studies suggest that prostaglandins may contribute to exercise-induced increases in muscle sympathetic nerve activity (MSNA). To test this hypothesis, MSNA was measured at rest and during exercise before and after ...
NASA Center: NASA (non Center Specific) Publication Year: 2001
Added to NTRS: 2006-08-02
Document ID: 20040112605
Contribution of perfusion pressure to vascular resistance response during head-up tilt
Author(s): Imadojemu, V. A.; Lott, M. E.; Gleeson, K.; Hogeman, C. S.; Ray, C. A.; Sinoway, L. I.
Abstract: We measured brachial and femoral artery flow velocity in eight subjects and peroneal and median muscle sympathetic nerve activity (MSNA) in five subjects during tilt testing to 40 degrees. Tilt caused similar increases in ...
NASA Center: NASA (non Center Specific) Publication Year: 2001
Added to NTRS: 2006-08-02
Document ID: 20040112403
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