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Intraocular and intracranial pressures during head-down tilt with lower body negative pressure.
Macias BR, Liu JH, Grande-Gutierrez N, Hargens AR. Macias BR, et al. Aerosp Med Hum Perform. 2015 Jan;86(1):3-7. doi: 10.3357/AMHP.4044.2015. Aerosp Med Hum Perform. 2015. PMID: 25565526
DISCUSSION: These data suggest that short duration exposures to LBNP attenuate HDT-induced increases in IOP and ICP. Macias BR, Liu JHK, Grande-Gutierrez N, Hargens AR. Intraocular and intracranial pressures during head-down tilt with lower body negative pressure... …
DISCUSSION: These data suggest that short duration exposures to LBNP attenuate HDT-induced increases in IOP and ICP. Macias BR
Tibia Bone Microvascular Flow Dynamics as Compared to Anterior Tibial Artery Flow During Body Tilt.
Becker RL, Siamwala JH, Macias BR, Hargens AR. Becker RL, et al. Among authors: macias br. Aerosp Med Hum Perform. 2018 Apr 1;89(4):357-364. doi: 10.3357/AMHP.4928.2018. Aerosp Med Hum Perform. 2018. PMID: 29562965
Therefore, for a given decrease in local blood pressure in the leg with head-down body tilt, the magnitude of increase in blood flow is greater in the microcirculation as compared to the feeding artery.Becker RL, Siamwala JH, Macias BR, Hargens AR. Tibia bone microv …
Therefore, for a given decrease in local blood pressure in the leg with head-down body tilt, the magnitude of increase in blood flow is grea …
Treadmill exercise within lower-body negative pressure attenuates simulated spaceflight-induced reductions of balance abilities in men but not women.
Macaulay TR, Macias BR, Lee SM, Boda WL, Watenpaugh DE, Hargens AR. Macaulay TR, et al. Among authors: macias br. NPJ Microgravity. 2016 Jun 30;2:16022. doi: 10.1038/npjmgrav.2016.22. eCollection 2016. NPJ Microgravity. 2016. PMID: 28725733 Free PMC article.
Lumbar Spine Paraspinal Muscle and Intervertebral Disc Height Changes in Astronauts After Long-Duration Spaceflight on the International Space Station.
Chang DG, Healey RM, Snyder AJ, Sayson JV, Macias BR, Coughlin DG, Bailey JF, Parazynski SE, Lotz JC, Hargens AR. Chang DG, et al. Among authors: macias br. Spine (Phila Pa 1976). 2016 Dec 15;41(24):1917-1924. doi: 10.1097/BRS.0000000000001873. Spine (Phila Pa 1976). 2016. PMID: 27779600 Free PMC article.
Lower-body negative pressure decreases noninvasively measured intracranial pressure and internal jugular vein cross-sectional area during head-down tilt.
Watkins W, Hargens AR, Seidl S, Clary EM, Macias BR. Watkins W, et al. Among authors: macias br. J Appl Physiol (1985). 2017 Jul 1;123(1):260-266. doi: 10.1152/japplphysiol.00091.2017. Epub 2017 May 11. J Appl Physiol (1985). 2017. PMID: 28495841 Free PMC article.
Noninvasive assessment of intracranial pressure waveforms by using pulsed phase lock loop technology. Technical note.
Ueno T, Macias BR, Yost WT, Hargens AR. Ueno T, et al. Among authors: macias br. J Neurosurg. 2005 Aug;103(2):361-7. doi: 10.3171/jns.2005.103.2.0361. J Neurosurg. 2005. PMID: 16175869 Clinical Trial.
Cranial diameter pulsations measured by non-invasive ultrasound decrease with tilt.
Ueno T, Ballard RE, Macias BR, Yost WT, Hargens AR. Ueno T, et al. Among authors: macias br. Aviat Space Environ Med. 2003 Aug;74(8):882-5. Aviat Space Environ Med. 2003. PMID: 12924766
Intracranial pressure dynamics assessed by noninvasive ultrasound during 30 days of bed rest.
Steinbach GC, Macias BR, Tanaka K, Yost WT, Hargens AR. Steinbach GC, et al. Among authors: macias br. Aviat Space Environ Med. 2005 Feb;76(2):85-90. Aviat Space Environ Med. 2005. PMID: 15742821
Intramuscular pressures in antigravity muscles using gravity-independent, pneumatic hardware.
Macias BR, Minocha R, Cutuk AA, Hill J, Shiau J, Hargens AR. Macias BR, et al. Aviat Space Environ Med. 2008 Aug;79(8):749-53. doi: 10.3357/asem.2136.2008. Aviat Space Environ Med. 2008. PMID: 18717112
Depth of penetration of negative pressure wound therapy into underlying tissues.
Murphey GC, Macias BR, Hargens AR. Murphey GC, et al. Among authors: macias br. Wound Repair Regen. 2009 Jan-Feb;17(1):113-7. doi: 10.1111/j.1524-475X.2008.00448.x. Wound Repair Regen. 2009. PMID: 19152658
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