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2,328 results on '"Lower Body Negative Pressure"'

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1. Directional sensitivity of the cerebral pressure-flow relationship during forced oscillations induced by oscillatory lower body negative pressure.

2. Lower body negative pressure as a research tool and countermeasure for the physiological effects of spaceflight: A comprehensive review.

3. Transcutaneous vagal nerve stimulation during lower body negative pressure.

4. Low-dose sufentanil does not affect tolerance to LBNP-induced central hypovolemia or blood pressure responses during a cold pressor test.

5. Sex Differences in Sympathetic Responses to Lower-Body Negative Pressure.

6. Assessment of changes in blood volume during lower body negative pressure-induced hypovolemia using bioelectrical impedance analysis.

7. Validity and reliability of deriving the autoregulatory plateau through projection pursuit regression from driven methods.

8. Influence of sex on the reliability of cerebral blood velocity regulation during lower body negative pressure and supine cycling with considerations of the menstrual cycle.

9. Cerebral blood velocity during concurrent supine cycling, lower body negative pressure, and head-up tilt challenges: implications for concussion rehabilitation.

10. The effect of supine cycling and progressive lower body negative pressure on cerebral blood velocity responses.

11. Using the ear photoplethysmographic waveform as an early indicator of central hypovolemia in healthy volunteers utilizing LBNP induced hypovolemia model.

12. Compensatory hemodynamic changes in response to central hypovolemia in humans: lower body negative pressure: updates and perspectives.

13. Amplitude and phase measurements from harmonic analysis may lead to new physiologic insights: lower body negative pressure photoplethysmographic waveforms as an example.

14. High-frame-rate A-mode ultrasound for calibration-free cuffless carotid pressure: feasibility study using lower body negative pressure intervention.

15. The reciprocal relationship between cardiac baroreceptor sensitivity and cerebral autoregulation during simulated hemorrhage in humans.

17. A wireless ultrasound patch detects mild-to-moderate central hypovolemia during lower body negative pressure.

18. Identifying critical DO 2 with compensatory reserve during simulated hemorrhage in humans.

19. Graded lower body negative pressure induces intraventricular negative pressures and incremental diastolic suction: a pressure-volume study in a porcine model.

21. Effects of experimental hypovolemia and pain on pre-ejection period and pulse transit time in healthy volunteers.

22. Sympathetic transduction of blood pressure during graded lower body negative pressure in young healthy adults.

23. Influence of head-up tile and lower body negative pressure on the internal jugular vein.

25. Developing a "dry lab" activity using lower body negative pressure to teach physiology.

26. Optical Hemodynamic Imaging of Jugular Venous Dynamics During Altered Central Venous Pressure.

27. The design and use of a simple device for the MRI assessment of changes in cardiovascular function by lower-body negative-pressure-simulated reduction of central blood volume.

28. The impact of acute central hypovolemia on cerebral hemodynamics: does sex matter?

29. A comparison of protocols for simulating hemorrhage in humans: step versus ramp lower body negative pressure.

30. Renal medullary oxygenation decreases with lower body negative pressure in healthy young adults.

31. Factors mediating the pressor response to isometric muscle contraction: An experimental study in healthy volunteers during lower body negative pressure.

33. Lower body negative pressure protects brain perfusion in aviation gravitational stress induced by push-pull manoeuvre.

35. Effect of Lower Body Negative Pressure on Phase I Cardiovascular Responses at Exercise Onset.

36. Sympathetic activation by lower body negative pressure decreases kidney perfusion without inducing hypoxia in healthy humans.

37. Altered Autonomic Reactivity During Lower Body Negative Pressure in End-Stage Renal Disease.

38. Evaluation of Pulse Arrival Times during Lower Body Negative Pressure Test for the Non-Invasive Detection of Hypovolemia.

39. 1D Convolutional Neural Networks for Estimation of Compensatory Reserve from Blood Pressure Waveforms.

40. Clinical evidence of autonomic dysfunction due to atrial fibrillation: implications for rhythm control strategy.

41. Hemorrhage simulated by lower body negative pressure provokes an oxidative stress response in healthy young adults.

42. Changes in arterial cerebral blood volume during lower body negative pressure measured with MRI.

43. Lower Body Negative Pressure: Physiological Effects, Applications, and Implementation.

44. Lower body negative pressure to safely reduce intracranial pressure.

45. Small reductions in skin temperature after onset of a simulated hemorrhagic challenge improve tolerance in exercise heat-stressed individuals.

46. ECG-Derived Sympathetic and Parasympathetic Activity in the Healthy: an Early Lower-Body Negative Pressure Study Using Adaptive Kalman Prediction.

47. Development and evaluation of a novel system for inducing orthostatic challenge by tilt tests and lower body negative pressure.

48. Effect of acute hypoxemia on cerebral blood flow velocity control during lower body negative pressure.

49. Lower body negative pressure reduces optic nerve sheath diameter during head-down tilt.

50. Impact of mild orthostatic stress on aortic-cerebral hemodynamic transmission: insight from the frequency domain.

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