CHARACTERISTICS OF MARATHON RUNNERS NATIVES FROM HIGH ALTITUDE. Julien Brugniaux1, Jérémy Cornolo1, José-Luis Macarlupu2, Catherine Privat2, Fabiola León-Velarde2, Jean-Paul Richalet1. 1Université Paris 13, EA 2363, Laboratoire « Réponses cellulaires et fonctionnelles à l'hypoxie », ARPE, France, 2Universitad Peruana Cayetano Heredia, Departamento de Ciencias Biológicas y Fisiológicas, Laboratorio de Transporte de Oxígeno/IIA, Lima 31, Perú. Email: jbrugniaux@free.fr.

UTERINE AND ILIAC ARTERIAL BLOOD FLOW IS ASYMMETRIC IN ANDEANS BUT NOT EUROPEANS AT HIGH-ALTITUDE. VA Browne1, L Toledo-Jaldin4, RD Davila3, 4, LP Lopez4, E Vargas4, A Rodriguez4, M Aguilar4, D Cioffi-Ragan2, LG Moore1, 3. 1Altitude Research Center, Dept of Surgery, Div. Emergency Medicine UCDHSC Denver, CO, 2Dept. Obstetrics and Gynecology UCDHSC Denver, CO, 3Dept. Health/Behavioral Sciences UCDHSC Denver, CO, 4Instituto Boliviano de Biología de Altura, La Paz, Bolivia. Email: Vaughn.Browne@uchsc.edu.

DETERMINANTS OF MAXIMAL OXYGEN CONSUMPTION IN HYPOXIA: THE ROLE OF MUSCLE OXYGENATION. Nicolas Bourdillon1, Pascal Mollard1, Muriel Letournel2, Michèle Beaudry1, Jean-Paul Richalet12. 1Université Paris 13, EA2363 "Réponses cellulaires et fonctionnelles à l'hypoxie". Bobigny, France., 2AP-HP Hôpital Avicenne, Service d'explorations fonctionnelles. Bobigny, France. Email: nicolas.bourdillon@gmail.com.

PREECLAMPSIA IN ANDEANS AND EUROPEAN ANCESTRY REDUCE UTERINE ARTERY BLOOD FLOW AND FETAL GROWTH AT HIGH ALTITUDE BY DIFFERENT MECHANISMS. VA Browne1, L Toledo-Jaldin4, RD Davila3, 4, LP Lopez4, E Vargas4, A Rodriguez4, M Aguilar4, D Cioffi-Ragan2, LG Moore1, 3. 1Altitude Research Center, Dept of Surgery, Div. Emergency Medicine UCDHSC Denver, CO, 2Dept. Obstetrics and Gynecology UCDHSC Denver, CO, 3Dept. Health/Behavioral Sciences UCDHSC Denver, CO, 4Instituto Boliviano de Biología de Altura, La Paz, Bolivia. Email: Vaughn.Browne@uchsc.edu.

INFLAMMATORY "PRIMING" PREDISPOSES TO ACUTE MOUNTAIN SICKNESS. Damian Bailey1, Sarah Taudorf2, Ronan Berg2, Carsten Lundby3, Bente Pedersen2, Kirsten Moller2, 4. 1Department of Physiology, University of Glamorgan, UK, 2Centre of Inflammation and Metabolism, Department of Infectious Diseases, Rigshospitalet, Denmark, 3Copenhagen Muscle Research Centre, Rigshospitalet, Denmark, 4Department of Cardiothoracic Anaesthesia, Rigshospitalet, Denmark. Email: dbailey1@glam.ac.uk.

NORMOBARIC INTERMITTENT HYPOXIC EXPOSURES DO NOT IMPROVE PSYCHOMOTOR PERFORMANCE DURING HYPOBARIC HYPOXIA (4300M). Allen Cymerman, Stephen Muza, Charles Fulco, Beth Beidleman, Leonard Elliott, Sarah Elliott, Michael Tapia, Alison Money, Elizabeth Root. Thermal and Mountain Medicine Divisiion, USARIEM. Email: allen.cymerman@us.army.mil.

CHANGES IN THE RAT CORTEX FOLLOWING EXPOSURE TO MODERATE HYPOXIA. Vidyasagar Casikar1, Vinod George Thykadavil2, Karuna Rameshkumar3, venkatesh Thuppil4. 1Dept of Neurosurgery, Nepean Hospital, NSW 2750, Australia, 2Dept of Biochemistry,St John's National Academy of Health Sciences, Bangalore 560034, India, 3Dept of Clinical Pathology,St John's National Academy of Health Sciences, Bangalore 560034, India, 4St John's National Academy of Health Sciences, Bangalore 560034, India. Email: casikarv@gmail.com.

PEDIATRIC HIGH ALTITUDE PULMONARY EDEMA IN LA PAZ, BOLIVIA. James Cromie1, Susan Niermeyer1, Patricio Andrade2. 1University of Colorado Health Sciences, 2Caja Nacional de Salud, La Paz, Bolivia. Email: james.cromie@uchsc.edu.

TEMPORARY VISION LOSS AT ALTITUDE DUE TO INTERMITTANT ANTERIOR CHAMBER ANGLE CLOSURE. RS Davidson1, MY Kahook1, RC Roach2, B Honigman3. 1Assistant Professor of Ophthalmology, Rocky Mountain Lions Eye Institute, University of Colorado School of Medicine, 2Associate Professor of Surgery, Research Director, Altitude Research Center, University of Colorado School of Medicine, 3Professor of Surgery, Director, Altitude Research Center, University of Colorado School of Medicine. Email: benjamin.honigman@uchsc.edu.

OPTIC NERVE SHEATH ULTRASONOGRAPHY CAN BE USED TO MONITOR INTRACRANIAL PRESSURE IN HIGH ALTITUDE CEREBRAL EDEMA. Peter J. Fagenholz1,5, Jonathan A. Gutman2,5, Alice F. Murray3,5, Vicki E. Noble4, N. Stuart Harris4. 1Department of Surgery, Massachusetts General Hospital, 2Hematology-Oncology Division, University of Washington Fred Hutchinson Cancer Research Center, 3Emergency Department, New Royal Infirmary of Edinburgh, 4Department of Emergency Medicine, Massachusetts General Hospital, 5Himalayan Rescue Association Pheriche Clinic, Spring 2006. Email: pfagenholz@partners.org

OPTIC NERVE SHEATH DIAMETER, A SURROGATE MEASURE OF INTRACRANIAL PRESSURE, IS ASSOCIATED WITH THE PRESENCE AND SEVERITY OF ACUTE MOUNTAIN SICKNESS. Peter J. Fagenholz1,5, Jonathan A. Gutman2,5, Alice F. Murray3,5, Vicki E. Noble4, Carlos A. Camargo Jr.4, Andrea J. Pelletier4, N. Stuart Harris4. 1Department of Surgery, Massachusetts General Hospital, 2Hematology-Oncology Division, University of Washington Fred Hutchinson Cancer Research Center, 3Emergency Department, New Royal Infirmary of Edinburgh, 4Department of Emergency Medicine, Massachusetts General Hospital, 5Himalayan Rescue Association Pheriche Clinic, Spring 2006. Email: pfagenholz@partners.org.

OPTIC NERVE SHEATH DIAMETER IS INCREASED IN HIGH ALTITUDE PULMONARY EDEMA: EVIDENCE FOR INCREASED INTRACRANIAL PRESSURE. Peter J. Fagenholz1,5, Jonathan A. Gutman2,5, Alice F. Murray3,5, Vicki E. Noble4, N. Stuart Harris4. 1Department of Surgery, Massachusetts General Hospital, 2Hematology-Oncology Division, University of Washington Fred Hutchinson Cancer Research Center, 3Emergency Department, New Royal Infirmary of Edinburgh, 4Department of Emergency Medicine, Massachusetts General Hospital, 5Himalayan Rescue Association Pheriche Clinic, Spring 2006. Email: pfagenholz@partners.org.

CLIMBING SPECIFIC FINGER ENDURANCE IN NORMOXIA AND HYPOXIA. Stanley Grant1, Jamie Reid1, Dave MacLeod1, John Bradley2, Ronald Baxendale1, Neil Innes1, Mhairi Stewart1, Alice Moir1, Tom Aitchison3. 1Institute of Biomedical and Life Sciences, University of Glasgow, 2Scottish Institute of Sport, 3Statistics Department, University of Glasgow. Email: S.Grant@bio.gla.ac.uk.

HYPOXIA REGULATES MITOCHONDRIAL PROTEIN EXPRESSION OF SKELETAL MUSCLE IN WISTAR RATS: A PROTEOMIC STUDY. Wenxiang Gao, Jian Chen, Yuqi Gao, Jian Huang, Mingchun Cai. Institute of High Altitude Medicine, Third Military Medical University, Chongqing 400038, China. Email: winneygaocn@yahoo.com.cn.

CLINICAL APPLICATION OF A STANDARDIZED STIMULUS TO ASSESS CEREBROVASCULAR REACTIVITY USING BOLD MRI. Jay Han1, 2, Marat Slessarev2, Danny Mandell3, Julien Poublanc3, Adrian Crawley3, Alexandra Mardimae1, 2, Joseph A. Fisher1, 2, David J. Mikulis3. 1Department of Physiology, University of Toronto, 2Department of Anesthesia, University Health Network, 3Department of Medical Imaging, University Health Network. Email: Jay.Han@uhn.on.ca.

HYPOTHERMIC PROTECTION OF ISCHEMIC HEART: 13C NMR SUBSTRATE ANALYSIS. Outi Hyyti1,2,3,4, Xue-Han Ning3,4, Michael Portman3,4. 1Dept of Physiology, Univ of Helsinki, Finland, 2Dept of Radiology, Univ of Washington, Seattle, WA, 3Dept of Pediatrics, Univ of Washington, Seattle, WA, 4Children's Hospital and Regional Medical Center, Seattle, WA. Email: outi@u.washington.edu.

SKELETAL MUSCLE IN HYPOXIA: THE ROLE OF ERYTHROPOIETIN. Luciana Hagström, Fabrice Favret, Michèle Beaudry, Jean-Paul Richalet, Thierry Launay. Université Paris 13 EA2363 "Réponses cellulaires et fonctionnelles à l'hypoxie" Bobigny, France. Email: loubex@hotmail.com

TRANSGENIC MICE UNDER EXPRESSING EPO SHOW AN INCREASE IN EPO RECEPTORS AND VEGF MRNA AFTER HYPOXIA. Raja El Hasnaoui, Aurélien Pichon, Thierry Launay, Michèle Beaudry, Jean-Paul Richalet, Fabrice Favret. Université Paris 13, EA2363 "Réponses cellulaires et fonctionnelles à l'hypoxie". Bobigny, France. Email: rajaelhasnaoui@hotmail.com.

VENTILATORY RESPONSE DURING EXERCISE IN MITOCHONDRIAL MYOPATHY PATIENTS. K. Heinicke, T. Taivassalo, P. Wyrick, T.T. Babb, R.G. Haller. Neuromuscular Center, Institute for Exercise and Environmental Medicine of Presbyterian Hospital, Dallas, TX. Email: KatjaHeinicke@TexasHealth.org.

POSTNATAL DEVELOPMENT OF EPO AND SOLUBLE EPO RECEPTOR IN BRAINSTEM IN NORMOXIA AND CHRONIC HYPOXIA IN RATS. Vincent Joseph1, Jorge Soliz2. 1Dpt Pediatrics, Laval University, 2Inst. of veterinary Physiology, Irchel Unversity. Email: joseph.vincent@crsfa.ulaval.ca.

NORMOBARIC INTERMITTENT HYPOXIC EXPOSURES IMPROVE FOOT MARCH PERFORMANCE AT 4300 M. Juli Jones, Stephen Muza, Charles Fulco, Beth Beidleman, Michael Tapia, Eric Lammi, Leonard Elliott, Allen Cymerman. Thermal and Mountain Medicine Division, USARIEM. Email: juli.jones@us.army.mil.

FACTORS INFLUENCING ACUTE MOUNTAIN SICKNESS IN NEPAL TREKKERS. LD Johannson1, MPW Grocott2, G Engels3, B Basnyat4, MJ Poulin1,5,6. 1Department of Medical Science, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada, 2Centre for Aviation, Space, and Extreme Environment Medicine, University College London, London, UK, 3Faculty of Mathematics, University of Calgary, Calgary Alberta, Canada, 4Nepal International Clinic, Himalayan Rescue Association, Kathmandu Nepal, 5Department of Physiology and Biophysics, Faculty of Medicine, University of Calgary, Calgary Alberta, Canada, 6Faculty of Kinesiology, University of Calgary, Calgary Alberta, Canada. Email: ljohannson@yahoo.com.

CASE REPORT OF VENTRICULAR TRIGEMINY AT 4272 METERS IN NEPAL. LD Johannson1, MPW Grocott2. 1Department of Medical Science, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada, 2Centre for Aviation, Space, and Extreme Environment Medicine, University College London, London, UK. Email: ljohannson@yahoo.com.

SHORT-TERM INTERMITTENT HYPOXIC EXPOSURE ATTENUATES NEGATIVE MOOD ALTERATIONS AT SIMULATED HIGH ALTITUDE: A PILOT STUDY. K Kambis, J Barnes, R Chamberlain, A Artese, T Tsui, T Stanley. The Jack Borgenicht Altitude Physiology Research Facility, Department of Kinesiology, College of William & Mary, Williamsburg, VA, USA. Email: kwkamb@wm.edu.

HIGHER PULMONARY ARTERY PRESSURE IN CHILDREN THAN ADULTS UPON FAST ASCENT TO HIGH ALTITUDE. S Kriemler1, C Jansen4, A Linka4, A Kessel4, M Zehnder2, M Kohler3, KE Bloch3, U Boutellier2, HP Brunner-La Rocca4. 1Institute of Sport and Health Sciences, University of Basel, 2Exercise Physiology, ETH-University of Zurich, 3Pulmonary Division, University Hospital of Zurich, 4Cardiology, University Hospital of Basel, Switzerland. Email: susi.kriemler@unibas.ch.

THE HIGHER HYPOXIC VENTILATORY RESPONSE IN CHILDREN DOES NOT PROTECT THEM FROM ACUTE MOUNTAIN SICKNESS. S Kriemler1,2, M Zehnder2, M Kohler3, KE Bloch3, HP Brunner-La Rocca4, U Boutellier2. 1Institute of Sport and Health Sciences, University of Basel, 2Exercise Physiology, ETH-University of Zurich, 3Pulmonary Division, University Hospital of Zurich, 4Cardiology, University Hospital of Basel, Switzerland. Email: susi.kriemler@unibas.ch.

PLASMA ERYTHROPOIETIN CONCENTRATION IN HUMANS IS RELATED MORE TO HYOXEMIA THAN TO HYPOXIA. Carsten Lundby   Department of Sport Science, Århus University, Denmark. Email: lundby@idraet.au.dk

SKELETAL MUSCLE CELLS AND ERYTHROPOIETIN: GROWTH AND DIFFERENTIATION. EFFECT OF HYPOXIA. Thierry Launay, Séverine Divoux, Dominique Marchant, Nicolas Bourdillon, Fabrice Favret, Alain Duvallet, Jean-Paul Richalet, Michèle Beaudry. Université Paris 13 EA 2363 "Réponses cellulaires et fonctionnelles à l'hypoxie" Bobigny France. Email: mbeaudry@noos.fr.

ACUTE HYPEROXIA PREVENTS ARTERIOVENOUS INTRAPULMONARY SHUNTING DURING SUBMAXIMAL EXERCISE IN HEALTHY HUMANS. Andrew Lovering, Michael Stickland, Markus Amann, Marlowe Eldridge. John Rankin Laboratory of Pulmonary Medicine. Email: atlovering@wisc.edu.

THE ROLE OF THE ALTITUDE LEVEL ON CEREBRAL AUTOREGULATION IN MAN RESIDENT TO HIGH ALTITUDE. Gerard F. A. Jansen1, Anne Krins1, Buddha Basnyat2, Joseph A Odoom1, Can Ice3, Sanju Lama4. 1Department of Anesthesiology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands, 2Nepal International Clinic, Kathmandu, Nepal, 3Department of Physiology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands, 4Department of Medical Science, University of Calgary, Calgary, Alberta, Canada. Email: slama@ucalgary.ca.

NOCTURNAL PERIODIC BREATHING DURING ASCENT TO MUZTAGH ATA. Tsogyal D. Latshang1, Alexander J Turk1, Otto D. Schoch2, Thomas Hess3, Urs Hefti4, Tobias Merz5, Martina M. Bosch6, Daniel Barthelmes6, Marco Maggiorini7, Konrad E. Bloch1. 1Pulmonary Division, University Hospital, Zurich, Switzerland, 2Kantonsspital, St. Gallen, Switzerland, 3Kantonsspital, Winterthur, Switzerland, 4Kantonsspital, Aarau, Switzerland, 5Intensive Care, University Hospital, Zurich, Switzerland, 6Opthalmology, University Hospital, Zurich Switzerland, 7Intensive Care, University Hospital, Zurich, Switzerland. Email: tsogyal.latshang@usz.ch.

CEREBRAL HEMODYNAMICS DURING HYPERCAPNIA IN YOUNG AND POSTMENOPAUSAL WOMEN. Georgios D. Mitsis1, 2, Chantel D. Debert3, 4, Mahmoud Hajo5, Vasilis Z. Marmarelis5, Marc J. Poulin3, 4, 6, 7. 1Institute of Communication and Computer Systems, National Technical University of Athens, Athens 15780, Greece, 2fMRIB Centre, University of Oxford, Oxford OX3 9DU, United Kingdom, 3Department of Physiology & Biophysics, University of Calgary, Calgary, Alberta T2N 4N1, Canada, 4Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta T2N 4N1, Canada, 5Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA, 6Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada, 7Faculty of Kinesiology, University of Calgary, Calgary, Alberta T2N 4N1, Canada. Email: gmitsis@fmrib.ox.ac.uk.

UPREGULATED ENDOTHELIN RECEPTORS IN CIRCULATING ENDOTHELIAL CELLS IN HAPE?.  Heimo Mairbäurl1, Marc Berger2, Peter Bärtsch1, Christoph Dehnert1, Guido Schendler1, Elmar Menold1, Andy Luks3, Damian Bailey4, Vitalie Faoro5, Christian Castell1, Erik Swenson3   1Medical Clinic VII, Sports Medicine, University Hospital Heidelberg, Germany2Department of Anesthesiology, University Hospital Heidelberg, Germany3Medical and Research Services, Veterans Affairs Puget Sound Health Care System, University of Washington, Seattle, USA4Department of Physiology, University of Glamorgan, UK5Laboratoire de Physiopathologie, Université Libre de Bruxelles, Belgium. heimo.mairbaeurl@med.uni-heidelberg.de.

REPEATED ISCHEMIA AND REPERFUSION INCREASEAS MUSCULAR PERFORMANCE. Norbert Maassen1, Nadine Stuke1, Dimitios Tsikas2, Vladimir Shushakov1. 1Sportsphysology, Medical School Hannover, Germany, 2Clinical Pharmacology, Medical School Hannover, Germany. Email: maassen.norbert@mh-hannover.de.

SUSCEPTIBILITY TO ARTERIAL O2 DESATURATION (DSAO2) AND ACUTE MOUNTAIN SICKNESS (AMS) DURING ASCENT OF KILIMANJARO. Pierre Mayer, Antoine Delage, Claude Poirier, Vincent Jobin, François Bellemare. Centre Hospitalier de l'Université de Montréal, Canada. Email: pierre.mayer@umontreal.ca.

RETINAL VASCULAR FEATURES AT HIGH ALTITUDE. Daniel S Morris1, John EA Somner2, Kirsten M Scott3, Ian JC McCormick4, Baljean Dhillon4, Suber Huang5. 1Sunderland Eye Infirmary, UK, 2Tennent Institute of Ophthalmology, Glasgow, UK, 3Kings College London, UK, 4Princess Alexandra Eye Pavilion, Edinburgh, UK, 5Retinal Diseases Image Analysis Reading Center (REDIARC) at University Hospitals of Cleveland at Case Western Reserve University, Cleveland, Ohio, USA, 6Retinal Diseases Image Analysis Reading Center (REDIARC) at University Hospitals of Cleveland at Case Western Reserve University, Cleveland, Ohio, USA. Email: dsm@doctors.org.uk.

CHANGES IN CEREBRAL KU70 EXPRESSION FOLLOWING CEREBRAL HYPOXIA/ISCHEMIA IN NEONATAL RATS. S. Meng1, M. Qiao1, S. Crowley2, N. Webster2, S. Lama2, U.I. Tuor1, 2. 1Institute for Biodiagnostics (West), NRC, Calgary., 2Faculty of Medicine, University of Calgary, Alberta, Calgary. Email: slama@ucalgary.ca.

NOCTURNAL 6-HOUR APNEA SCREENING DURING LMU* MEDICAL EXPEDITION TO MT. EVEREST (MEDEX 2006). Klaus Mees1, Richard de la Chaux2. 1LM University Muenchen, ENT Dept., 2LM University Muenchen, ENT Dept. Email: Klaus.Mees@med.uni-muenchen.de.

VENTILATORY RESPONSES TO HYPOXIA ARE IMPAIRED IN A RODENT MODEL OF SLEEP-DISORDERED BREATHING. Ken O'Halloran1, Aidan Bradford2. 1UCD School of Medicine and Medical Science, University College Dublin, Dublin 4, Ireland., 2Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland. Email: ken.ohalloran@ucd.ie.

CEREBROVASCULAR RESPONSES TO EXOGENOUS NO AT ALTITUDE AND DURING INDUCED HYPEROXIA IN LADAKH HIGHLANDERS. E Prisman1, M Slessarev1, S Ito1, R Watson2, D Preiss1, A Vesely1, D Greene3, T Norboo4, T Stobdan4, D Diskit5, A Norboo5, M Kunang6, JA Fisher1, O Appenzeller7. 1Departments of Anesthesia and Physiology, University Health Network, University of Toronto, 2University of California, San Diego, 3New Mexico Highlands University, 4Ladakh Institute of Prevention and Ladakh Heart Foundation, 5Sonam Norboo memorial hospital Leh, Ladakh, 6Ladakh autonomous hill development council, 7NMHEMCRF, Albuquerque, NM. Email: eitan.prisman@utoronto.ca.

ALTERED METABOLIC STATE DEFINES ADAPTATION TO HIGH ALTITUDE IN ETHIOPIAN HIGHLANDERS. Marat Slessarev1, Victoria Claydon2, Giosué Gulli3, James Duffin1, Otto Appenzeller4, Guta Zenebe5, Amha Gebremedhin6, Roger Hainsworth3, Joseph Fisher1   1Departments of Anesthesia and Physiology, University Health Network, University of Toronto,2International Collaboration On Repair Discoveries, University of British Columbia,3Institute for Cardiovascular Research, University of Leeds, UK Department of Neurology,4New Mexico Health Enhancement and Marathon Clinics Research Foundation, USA,5Department of Neurology, Yehuleshet Higher Clinic, and,6Department of Medicine, University of Addis Ababa, Ethiopia. Email: marat.slessarev@utoronto.ca.

SYSTEMIC HEMODYNAMIC RESPONSES TO 18 HOURS OF CONTINUOUS HYPOXIA IN HEALTHY ADULTS. William Schrage1, Eric Snyder2, Bruce Johnson2. 1Kinesiology, University of Wisconsin, 2Internal Medicine, Mayo Clinic. Email: wschrage@education.wisc.edu.

ERYTHROPOIETIN INFLUENCES THE NEURAL CONTROL OF VENTILATION IN HYPOXIC MICE AND MEN. Jorge Soliz1, Jonas Juhl Thomsen2, Vincent Joseph3, Carsten Lundby2, Max Gassmann1. 1Institute of Veterynary Physiology, University of Zurich, 2Dpt Sport Science, Århus University, 3Dpt Pediatrics, Laval University. Email: jsoliz@access.unizh.ch.

EFFECTS OF ACUTE HYPOXIA ON CEREBRAL AND MUSCLE OXYGENATION DURING INCREMENTAL EXERICSE. Andrew Subudhi, Andrew Dimmen, Robert Roach. Altitude Reserach Center, University of Colorado Denver Health Science Center and Colorado Springs Campuses. Email: asubudhi@uccs.edu.

PULMONARY EDEMA INDUCED BY MILD PHYSICAL ACTIVITY IN HUMANS. Marcos Schwab1, Thomas Stuber2, Pierre-Yves Jayet1, Jonathan Bloch1, Carlos Salinas3, Hilde Spielvogel3, Mercedes Villena3, Yves Allemann2, Claudio Sartori1, Urs Scherrer1. 1Department of Internal Medicine, University Hospital, Lausanne, Switzerland, 2Department of Cardiology, University Hospital, Bern, Switzerland, 3Instituto Boliviano de Biología de Altura, La Paz, Bolivia. Email: Marcos.Schwab@chuv.ch.

MEASURING INTRAOCULAR PRESSURE AT ALTITUDE. John EA Somner1, Kirsten M Scott2, Ian JC McCormick3, Baljean Dhillon3, Daniel S Morris4. 1Tennent Institute of Ophthalmology, Glasgow, UK, 2Kings College London, UK, 3Princess Alexandra Eye Pavilion, Edinburgh, UK, 4Sunderland Eye Infirmary, UK. Email: john@somner.org.uk.

VENTILATION, HEMODYNAMICS, AND EXERCISE PERFORMANCE OF ELDERLY MEN AFTER INTERMITTENT HYPOXIA TRAINING (IHT). Tatiana Serebrovskaya1, Oleg Korkushko2, Valeriy Shatilo2, Vadim Ischuk2, Fred Downey3. 1Bogomoletz Institute of Physiology, Ukraine, 2Institute of Gerontology, Ukraine, 3University North Texas Health Science Center, USA. Email: sereb@mail.kar.net

MAXIMAL AND SUBMAXIMAL EXERCISE PERFORMANCE DURING STAY AT 5533M. Alexander J. Turk1, Tsogyal D. Latshang1, Thomas Hess2, Otto D. Schoch3, Urs Hefti4, Tobias Merz5, Martina M. Bosch6, Daniel Barthelmes6, Marco Maggiorini7, Konrad E. Bloch1. 1Pulmonary Division, University Hospital, Zurich, Switzerland, 2Kantonsspital, Winterthur, Switzerland, 3Kantonsspital, St. Gallen, Switzerland, 4Kantonsspital, Aarau, Switzerland, 5Intensive Care, University Hospital, Berne, Switzerland, 6Opthalmology, University Hospital, Zurich Switzerland, 7Intensive Care, University Hospital, Zurich, Switzerland. Email: alexander.turk@usz.ch.

DETERMINANTS OF BLOOD OXYGENATION DURING PREGNANCY IN ANDEAN AND EUROPEAN RESIDENTS OF HIGH ALTITUDE.  M Vargas1, E Vargas1, CG Julian2,3, A Rodriguez1, JA Armaza1, W Tellez1, S Niermeyer2, MJ Wilson2,3, E Parra4, M Shriver4, LG Moore2,3   1Instituto Boliviano de Biología de Altura, La Paz, BO2Altitude Research Center, University of Colorado at Denver and Health Sciences Center, Denver, USA3Dept of Health/Behavioral Sciences, University of Colorado at Denver and Health Sciences Center, Denver, USA4Anthropological Genetics Lab, Pennsylvania State University, State College, USA.

GREATER UTERINE ARTERY BLOOD FLOW DURING HIGH-ALTITUDE PREGNANCY IN INDIGENOUS (ANDEAN) THAN FOREIGN (EUROPEAN) WOMEN.  MJ Wilson1,2, M Lopez3, M Vargas3, CG Julian1,2, W Tellez3, A Rodriquez3, A Bigham4, JF Armaza3, S Niermeyer1,2, M Shriver4, LG Moore1,2   1Altitude Research Center, University of Colorado at Denver and Health Sciences Center, Denver, USA2 Dept of Health/Behavioral Sciences, University of Colorado at Denver and Health Sciences Center, Denver, USA3Instituto Boliviano de Biología de Altura, La Paz, BO4Anthropological Genetics Lab, Pennsylvania State University, State College, USA. Email: Megan.Wilson@cudenver.edu

NORMAL COGNITIVE PERFORMANCE IN HIGH-ALTITUDE CLIMBERS ON MUZTAGH ATA: AN ASSESSMENT BY EYE MOVEMENT RECORDINGS AND NEUROPSYCHOLOGICAL TESTS. Merz Tobias1, Martina Bosch2, Daniel Barthelmes3, Timothy Holmes2, Konrad Bloch4, Marco Maggiorini5, Urs Schwarz6. 1Intensive Care Unit, University Hospital Bern, Switzerland, 2Ophthalmology Clinic, University Hospital Zurich, Switzerland, 3Ophthalmology Clinic, University Hospital Bern, Switzerland, 4Pneumology Clinic, University Hospital Zurich, Switzerland, 5Intensive Care Unit, University Hospital Zurich, Switzerland, 6Dept of Neurology, University Hospital Zurich, Switzerland. Email: klinmax@usz.unizh.ch.