Brandon R Macias

Brandon R Macias

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Brandon R Macias

Brandon R Macias

Publications by authors named "Brandon R Macias"

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Response to: Optic Disc Swelling in Astronauts: A Manifestation of Glymphedema.

J Glaucoma 2019 Aug 14. Epub 2019 Aug 14.

KBR, Houston, TX.

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http://dx.doi.org/10.1097/IJG.0000000000001350DOI Listing
August 2019

The NASA Twins Study: A multidimensional analysis of a year-long human spaceflight.

Science 2019 04;364(6436)

Northwestern University, Evanston, IL, USA.

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http://dx.doi.org/10.1126/science.aau8650DOI Listing
April 2019

Optic Disc Edema after 30 Days of Strict Head-down Tilt Bed Rest.

Ophthalmology 2019 Mar 9;126(3):467-468. Epub 2018 Oct 9.

NASA Johnson Space Center, Houston, Texas.

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http://dx.doi.org/10.1016/j.ophtha.2018.09.042DOI Listing
March 2019

Thigh Cuffs as a Countermeasure for Ocular Changes in Simulated Weightlessness.

Ophthalmology 2018 03 16;125(3):459-460. Epub 2017 Nov 16.

Cardiovascular and Vision Laboratory, KBRwyle, Houston, Texas. Electronic address:

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http://dx.doi.org/10.1016/j.ophtha.2017.10.023DOI Listing
March 2018

Muscle Microvascular Blood Flow, Oxygenation, pH, and Perfusion Pressure Decrease in Simulated Acute Compartment Syndrome.

J Bone Joint Surg Am 2017 Sep;99(17):1453-1459

1Department of Orthopaedic Surgery, UC San Diego Medical Center, University of California, San Diego, San Diego, California.

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http://dx.doi.org/10.2106/JBJS.16.01191DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5685422PMC
September 2017

Lower-body negative pressure decreases noninvasively measured intracranial pressure and internal jugular vein cross-sectional area during head-down tilt.

J Appl Physiol (1985) 2017 Jul 11;123(1):260-266. Epub 2017 May 11.

Department of Orthopedic Surgery, Altman Clinical and Translational Research Institute, La Jolla, California; and

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http://dx.doi.org/10.1152/japplphysiol.00091.2017DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5538811PMC
July 2017

Gender differences in tibial microvascular flow responses to head down tilt and lower body negative pressure.

Physiol Rep 2017 Feb 27;5(4). Epub 2017 Feb 27.

Department of Orthopedic Surgery, University of California, San Diego, California.

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http://dx.doi.org/10.14814/phy2.13143DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5328775PMC
February 2017

Lumbar Spine Paraspinal Muscle and Intervertebral Disc Height Changes in Astronauts After Long-Duration Spaceflight on the International Space Station.

Spine (Phila Pa 1976) 2016 Dec;41(24):1917-1924

*Department of Orthopaedic Surgery, University of California, San Diego, CA †The Ola Grimsby Institute, Bellevue, WA ‡KBRwyle, Houston, TX §School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ ¶Department of Orthopaedic Surgery, University of California, San Francisco, CA.

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http://dx.doi.org/10.1097/BRS.0000000000001873DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5588025PMC
December 2016

WISE 2005: Aerobic and resistive countermeasures prevent paraspinal muscle deconditioning during 60-day bed rest in women.

J Appl Physiol (1985) 2016 05 18;120(10):1215-22. Epub 2016 Feb 18.

Department of Orthopaedic Surgery, University of California, San Diego, California;

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http://dx.doi.org/10.1152/japplphysiol.00532.2015DOI Listing
May 2016

Shoulder skin and muscle hemodynamics during backpack carriage.

Appl Ergon 2015 Nov 19;51:80-4. Epub 2015 May 19.

Department of Orthopaedic Surgery, University of California, San Diego, United States. Electronic address:

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http://dx.doi.org/10.1016/j.apergo.2015.04.006DOI Listing
November 2015

Lower-body negative pressure restores leg bone microvascular flow to supine levels during head-down tilt.

J Appl Physiol (1985) 2015 Jul 30;119(2):101-9. Epub 2015 Apr 30.

Department of Orthopedic Surgery, University of California, San Diego, California.

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http://dx.doi.org/10.1152/japplphysiol.00028.2015DOI Listing
July 2015

Intraocular and intracranial pressures during head-down tilt with lower body negative pressure.

Aerosp Med Hum Perform 2015 Jan;86(1):3-7

Departments of Orthopaedic Surgery and Ophthalmology, UCSD Medical Center, University of California, San Diego, CA, USA.

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http://dx.doi.org/10.3357/AMHP.4044.2015DOI Listing
January 2015

Low dose PTH improves metaphyseal bone healing more when muscles are paralyzed.

Bone 2014 Jun 26;63:15-9. Epub 2014 Feb 26.

Orthopaedics, Department of Clinical and Experimental Medicine, Linköping University, 581 85 Linköping, Sweden.

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http://dx.doi.org/10.1016/j.bone.2014.02.008DOI Listing
June 2014

Upper extremity hemodynamics and sensation with backpack loads.

Appl Ergon 2014 May 26;45(3):608-12. Epub 2013 Sep 26.

Department of Orthopaedic Surgery, University of California, UCSD Medical Center, San Diego, USA. Electronic address:

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http://dx.doi.org/10.1016/j.apergo.2013.08.005DOI Listing
May 2014

WISE-2005: Countermeasures to prevent muscle deconditioning during bed rest in women.

J Appl Physiol (1985) 2014 Mar 23;116(6):654-67. Epub 2014 Jan 23.

Wyle Science, Technology, and Engineering Group, Houston, Texas;

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http://dx.doi.org/10.1152/japplphysiol.00590.2013DOI Listing
March 2014

Partial weight bearing does not prevent musculoskeletal losses associated with disuse.

Med Sci Sports Exerc 2013 Nov;45(11):2052-60

1Department of Health and Kinesiology, Texas A&M University, College Station, TX; 2Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN; 3Department of Biomedical Engineering, Texas A&M University, College Station, TX; 4Department of Mechanical Engineering, Texas A&M University, College Station, TX; and 5Department of Nutrition and Food Science, Texas A&M University, College Station, TX.

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http://dx.doi.org/10.1249/MSS.0b013e318299c614DOI Listing
November 2013

Paradoxical Sost gene expression response to mechanical unloading in metaphyseal bone.

Bone 2013 Apr 19;53(2):515-9. Epub 2013 Jan 19.

Orthopedics, Department of Clinical and Experimental Medicine, Linköping University, SE-58185, Linköping, Sweden.

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http://dx.doi.org/10.1016/j.bone.2013.01.018DOI Listing
April 2013

Leg intramuscular pressures and in vivo knee forces during lower body positive and negative pressure treadmill exercise.

J Appl Physiol (1985) 2012 Jul 26;113(1):31-8. Epub 2012 Apr 26.

Department of Health and Kinesiology, Texas A&M University, College Station, Texas, USA.

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http://dx.doi.org/10.1152/japplphysiol.01434.2011DOI Listing
July 2012

Insulin resistance syndrome blunts the mitochondrial anabolic response following resistance exercise.

Am J Physiol Endocrinol Metab 2010 Sep 6;299(3):E466-74. Epub 2010 Jul 6.

Dept. of Health and Kinesiology, Texas A & M University, College Station, 77843-4243, USA.

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http://dx.doi.org/10.1152/ajpendo.00118.2010DOI Listing
September 2010

The effect of backpacks on the lumbar spine in children: a standing magnetic resonance imaging study.

Spine (Phila Pa 1976) 2010 Jan;35(1):83-8

Department of Orthopaedic Surgery, University of California, San Diego, CA 92103, USA.

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http://dx.doi.org/10.1097/BRS.0b013e3181b21a5dDOI Listing
January 2010

WISE-2005: exercise and nutrition countermeasures for upright VO2pk during bed rest.

Med Sci Sports Exerc 2009 Dec;41(12):2165-76

Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM 87131-0001, USA.

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https://insights.ovid.com/crossref?an=00005768-200912000-000
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http://dx.doi.org/10.1249/MSS.0b013e3181aa04e5DOI Listing
December 2009

Depth of penetration of negative pressure wound therapy into underlying tissues.

Wound Repair Regen 2009 Jan-Feb;17(1):113-7

Department of Orthopaedic Surgery, University of California, San Diego, California 92103-8894, USA.

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http://dx.doi.org/10.1111/j.1524-475X.2008.00448.xDOI Listing
May 2009

LBNP exercise protects aerobic capacity and sprint speed of female twins during 30 days of bed rest.

J Appl Physiol (1985) 2009 Mar 26;106(3):919-28. Epub 2008 Dec 26.

Cardiovascular Laboratory, Wyle Integrated Science and Engineering Group, Houston, Texas, USA.

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http://dx.doi.org/10.1152/japplphysiol.91502.2008DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2660256PMC
March 2009

New noninvasive ultrasound technique for monitoring perfusion pressure in a porcine model of acute compartment syndrome.

J Orthop Trauma 2009 Mar;23(3):186-93; discussion 193-4

Department of Orthopaedic Surgery, University of California San Diego, San Diego, CA 92103-8894, USA.

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http://dx.doi.org/10.1097/BOT.0b013e31819901dbDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2775469PMC
March 2009

Heritability of bone density: regional and gender differences in monozygotic twins.

J Orthop Res 2009 Feb;27(2):150-4

Department of Orthopaedic Surgery, University of California at San Diego, UCSD Medical Center, San Diego, California 92103-8894, USA.

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http://dx.doi.org/10.1002/jor.20721DOI Listing
February 2009

Asymmetric loads and pain associated with backpack carrying by children.

J Pediatr Orthop 2008 Jul-Aug;28(5):512-7

Department of Orthopaedic Surgery, University of California-San Diego, 350 Dickinson Street, San Diego, CA 92103, USA.

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http://pdfs.journals.lww.com/pedorthopaedics/2008/07000/Asym
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http://content.wkhealth.com/linkback/openurl?sid=WKPTLP:land
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http://dx.doi.org/10.1097/BPO.0b013e31817d8143DOI Listing
November 2008

Intramuscular pressures in antigravity muscles using gravity-independent, pneumatic hardware.

Aviat Space Environ Med 2008 Aug;79(8):749-53

Department of Orthopedic Surgery, University of California, 350 Dickinson Street, Suite #121, San Diego, CA 92103-8894, USA.

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August 2008

Lower body negative pressure exercise plus brief postexercise lower body negative pressure improve post-bed rest orthostatic tolerance.

J Appl Physiol (1985) 2007 Dec 18;103(6):1964-72. Epub 2007 Oct 18.

Department of Integrative Physiology, University of North Texas Health Science Center, Fort Worth, TX, USA.

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http://www.physiology.org/doi/10.1152/japplphysiol.00132.200
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http://dx.doi.org/10.1152/japplphysiol.00132.2007DOI Listing
December 2007

The effect of kneeling during spine surgery on leg intramuscular pressure.

J Bone Joint Surg Am 2007 Sep;89(9):1941-7

Department of Orthopaedic Surgery, University of California at San Diego Medical Center, 350 Dickinson Street, Suite 121, San Diego, CA 92103-8894, USA.

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http://dx.doi.org/10.2106/JBJS.F.00943DOI Listing
September 2007

Supine LBNP exercise maintains exercise capacity in male twins during 30-d bed rest.

Med Sci Sports Exerc 2007 Aug;39(8):1315-26

Wyle Laboratories, Inc., Life Sciences Group, Houston, TX 77058, USA.

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http://dx.doi.org/10.1249/mss.0b013e31806463d9DOI Listing
August 2007

Cardiac atrophy in women following bed rest.

J Appl Physiol (1985) 2007 Jul 22;103(1):8-16. Epub 2007 Mar 22.

Institute for Exercise and Environmental Medicine, Presbyterian Hospital of Dallas, Dallas, TX 75231, USA.

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http://dx.doi.org/10.1152/japplphysiol.01162.2006DOI Listing
July 2007

LBNP treadmill exercise maintains spine function and muscle strength in identical twins during 28-day simulated microgravity.

J Appl Physiol (1985) 2007 Jun 29;102(6):2274-8. Epub 2007 Mar 29.

University of California, San Diego, Department of Orthopaedic Surgery, 350 Dickinson St., Suite 121, San Diego, CA 92103-8894, USA.

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http://dx.doi.org/10.1152/japplphysiol.00541.2006DOI Listing
June 2007

Space exercise and Earth benefits.

Curr Pharm Biotechnol 2005 Aug;6(4):305-17

Department of Orthopaedic Surgery, University of California-San Diego, 350 Dickinson Street, Suite 121, San Diego, CA 92103-8894, USA.

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http://dx.doi.org/10.2174/1389201054553653DOI Listing
August 2005

Noninvasive assessment of intracranial pressure waveforms by using pulsed phase lock loop technology. Technical note.

J Neurosurg 2005 Aug;103(2):361-7

Department of Orthopaedic Surgery, University of California San Diego, California, USA.

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http://dx.doi.org/10.3171/jns.2005.103.2.0361DOI Listing
August 2005

Exercise within lower body negative pressure partially counteracts lumbar spine deconditioning associated with 28-day bed rest.

J Appl Physiol (1985) 2005 Jul 10;99(1):39-44. Epub 2005 Mar 10.

Department of Orthopaedic Surgery, University of California-San Diego, 350 Dickinson St., San Diego, CA 92103-8894, USA.

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http://dx.doi.org/10.1152/japplphysiol.01400.2004DOI Listing
July 2005

Intracranial pressure dynamics assessed by noninvasive ultrasound during 30 days of bed rest.

Aviat Space Environ Med 2005 Feb;76(2):85-90

University of California, San Diego, CA, USA.

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February 2005

System for determination of ultrasonic wave speeds and their temperature dependence in liquids and in vitro tissues.

J Acoust Soc Am 2005 Feb;117(2):646-52

NASA-Langley Research Center, Hampton, Virginia 23681-2199, USA.

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http://dx.doi.org/10.1121/1.1848176DOI Listing
February 2005

Cranial diameter pulsations measured by non-invasive ultrasound decrease with tilt.

Aviat Space Environ Med 2003 Aug;74(8):882-5

Gravitational Research Branch, Life Science Division, NASA Ames Research Center, Moffett Field, CA, USA.

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August 2003