keyword
MENU ▼
Read by QxMD icon Read
search

Altitude training

keyword
https://www.readbyqxmd.com/read/28174343/mitochondrial-efficiency-and-exercise-economy-following-heat-stress-a-potential-role-of-uncoupling-protein-3
#1
Roy M Salgado, Ailish C Sheard, Roger A Vaughan, Daryl L Parker, Suzanne M Schneider, Robert W Kenefick, James J McCormick, Nicholas P Gannon, Trisha A Van Dusseldorp, Len R Kravitz, Christine M Mermier
Heat stress has been reported to reduce uncoupling proteins (UCP) expression, which in turn should improve mitochondrial efficiency. Such an improvement in efficiency may translate to the systemic level as greater exercise economy. However, neither the heat-induced improvement in mitochondrial efficiency (due to decrease in UCP), nor its potential to improve economy has been studied. Determine: (i) if heat stress in vitro lowers UCP3 thereby improving mitochondrial efficiency in C2C12 myocytes; (ii) whether heat acclimation (HA) in vivo improves exercise economy in trained individuals; and (iii) the potential improved economy during exercise at altitude...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28061925/hypoxia-occurrence-in-a-military-aviator-below-3048-m
#2
Lesli R Tristan
INTRODUCTION: Despite technological advances, hypoxia remains a concern in aviation. Hypoxia can present with a vast array of symptoms that are unique to each aviator. Military aviators undergo hypoxia awareness trainings to learn their unique constellation of hypoxia symptoms. CASE REPORT: This case report describes a military aviator who was flying in a B1 when the cabin depressurized. While performing the emergency checklist, the aviator was moving about the cabin and began to experience hypoxia symptoms...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28025245/predicting-the-distribution-of-phlebotomus-papatasi-diptera-psychodidae-the-primary-vector-of-zoonotic-cutaneous-leishmaniasis-in-golestan-province-of-iran-using-ecological-niche-modeling-comparison-of-maxent-and-garp-models
#3
Aioub Sofizadeh, Yavar Rassi, Hassan Vatandoost, Ahmad Ali Hanafi-Bojd, Abolfazl Mollalo, Sayena Rafizadeh, Amir Ahmad Akhavan
Zoonotic cutaneous leishmaniasis (ZCL) is a prevalent vector-borne disease in the Golestan province of Iran, with Phlebotomus papatasi (Scopoli, 1786) serving as the main vector. The aim of this study was to model the probability of presence of this species in the study area, and to determine the underlying factors affecting its distribution. Three villages were selected from each county of the province and visited monthly for investigating ZCL. Sticky paper traps were used for collecting the sand flies to determine the species present...
December 24, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/27932989/hypoxic-living-and-exercise-training-alter-adipose-tissue-leptin-leptin-receptor-in-rats
#4
Yingli Lu, Lianshi Feng, Minhao Xie, Li Zhang, Jianfang Xu, Zihong He, Tongjian You
Background: Hypobaric hypoxia results in weight loss in obese individuals, and exercise training is advocated for the treatment of obesity and its related metabolic dysfunctions. The purpose of this study was to investigate the effects of hypoxic living and exercise training on obesity and adipose tissue leptin/leptin receptor in dietary-induced obese rats. Methods: One hundred and thirty high-fat diet fed Sprague-Dawley rats were assigned into one of the following groups (n = 10 each): control, sedentary hypoxic living for 1-4 weeks (SH1, SH2, SH3, and SH4), living, and exercise training in normoxic conditions for 1-4 weeks (TN1, TN2, TN3, and TN4), and living and exercise training in hypoxic conditions for 1-4 weeks (TN1, TN2, TN3, and TN4)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27923417/mechanisms-of-memory-dysfunction-during-high-altitude-hypoxia-training-in-military-aircrew
#5
Daniel A Nation, Mark W Bondi, Ellis Gayles, Dean C Delis
OBJECTIVES: Cognitive dysfunction from high altitude exposure is a major cause of civilian and military air disasters. Pilot training improves recognition of the early symptoms of altitude exposure so that countermeasures may be taken before loss of consciousness. Little is known regarding the nature of cognitive impairments manifesting within this critical window when life-saving measures may still be taken. Prior studies evaluating cognition during high altitude simulation have predominantly focused on measures of reaction time and other basic attention or motor processes...
January 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27918229/prevalence-of-and-risk-factors-for-trachoma-in-southern-nations-nationalities-and-peoples-region-ethiopia-results-of-40-population-based-prevalence-surveys-carried-out-with-the-global-trachoma-mapping-project
#6
Tesfaye Haileselassie Adera, Colin Macleod, Misganu Endriyas, Michael Dejene, Rebecca Willis, Brian K Chu, Yohannes Letamo, Tebeje Misganaw, Tamiru Mesele, Emebet Mekonnen, Alemayehu Sisay, Yeneneh Mulugeta, Wondu Alemayehu, Khumbo Kalua, Tezera Kifle Destu, Yilikal Adamu, Jennifer L Smith, Abu Beyene, Addisu Tadesse, Anthony W Solomon
PURPOSE: We sought to estimate the prevalence of trachoma at sufficiently fine resolution to allow elimination interventions to begin, where required, in the Southern Nations, Nationalities, and Peoples' Region (SNNPR) of Ethiopia. METHODS: We carried out cross-sectional population-based surveys in 14 rural zones. A 2-stage cluster randomized sampling technique was used. A total of 40 evaluation units (EUs) covering 110 districts ("woredas") were surveyed from February 2013 to May 2014 as part of the Global Trachoma Mapping Project (GTMP), using the standardized GTMP training package and methodology...
2016: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27906593/does-swimming-at-a-moderate-altitude-favor-a-lower-oxidative-stress-in-an-intensity-dependent-manner-role-of-nonenzymatic-antioxidants
#7
Rafael A Casuso, Jerónimo Aragón-Vela, Gracia López-Contreras, Silvana N Gomes, Cristina Casals, Yaira Barranco-Ruiz, Jordi J Mercadé, Jesus R Huertas
Casuso, Rafael A., Jerónimo Aragón-Vela, Gracia López-Contreras, Silvana N. Gomes, Cristina Casals, Yaira Barranco-Ruiz, Jordi J. Mercadé, and Jesus R. Huertas. Does swimming at a moderate altitude favor a lower oxidative stress in an intensity-dependent manner? Role of nonenzymatic antioxidants. High-Alt Med Biol. 00:000-000, 2016-we aimed to describe oxidative damage and enzymatic and nonenzymatic antioxidant responses to swimming at different intensities in hypoxia. We recruited 12 highly experienced swimmers who have been involved in competitive swimming for at least 9 years...
December 1, 2016: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/27846230/influence-of-elevation-data-resolution-on-spatial-prediction-of-colluvial-soils-in-a-luvisol-region
#8
Vít Penížek, Tereza Zádorová, Radka Kodešová, Aleš Vaněk
The development of a soil cover is a dynamic process. Soil cover can be altered within a few decades, which requires updating of the legacy soil maps. Soil erosion is one of the most important processes quickly altering soil cover on agriculture land. Colluvial soils develop in concave parts of the landscape as a consequence of sedimentation of eroded material. Colluvial soils are recognised as important soil units because they are a vast sink of soil organic carbon. Terrain derivatives became an important tool in digital soil mapping and are among the most popular auxiliary data used for quantitative spatial prediction...
2016: PloS One
https://www.readbyqxmd.com/read/27820657/prevalence-of-and-risk-factors-for-trachoma-in-oromia-regional-state-of-ethiopia-results-of-79-population-based-prevalence-surveys-conducted-with-the-global-trachoma-mapping-project
#9
Berhanu Bero, Colin Macleod, Wondu Alemayehu, Solomon Gadisa, Ahmed Abajobir, Yilikal Adamu, Menbere Alemu, Liknaw Adamu, Michael Dejene, Addis Mekasha, Zelalem Habtamu Jemal, Damtew Yadeta, Oumer Shafi, Genet Kiflu, Rebecca Willis, Rebecca M Flueckiger, Brian K Chu, Alexandre L Pavluck, Anthony W Solomon
PURPOSE: To complete the baseline trachoma map in Oromia, Ethiopia, by determining prevalences of trichiasis and trachomatous inflammation - follicular (TF) at evaluation unit (EU) level, covering all districts (woredas) without current prevalence data or active control programs, and to identify factors associated with disease. METHODS: Using standardized methodologies and training developed for the Global Trachoma Mapping Project, we conducted cross-sectional community-based surveys from December 2012 to July 2014...
November 7, 2016: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27779956/emergency-medical-considerations-in-a-space-suited-patient
#10
Alejandro Garbino, Derek M Nusbaum, Daniel M Buckland, Anil S Menon, Jonathan B Clark, Erik L Antonsen
The Stratex Project is a high altitude balloon flight that culminated in a freefall from 41,422 m (135,890 ft), breaking the record for the highest freefall to date. Crew recovery operations required an innovative approach due to the unique nature of the event as well as the equipment involved. The parachutist donned a custom space suit similar to a NASA Extravehicular Mobility Unit (EMU), with life support system mounted to the front and a parachute on the back. This space suit had a metal structure around the torso, which, in conjunction with the parachute and life support assembly, created a significant barrier to extraction from the suit in the event of a medical emergency...
2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27766103/development-of-prediction-model-and-experimental-validation-in-predicting-the-curcumin-content-of-turmeric-curcuma-longa-l
#11
Abdul Akbar, Ananya Kuanar, Raj K Joshi, I S Sandeep, Sujata Mohanty, Pradeep K Naik, Antaryami Mishra, Sanghamitra Nayak
The drug yielding potential of turmeric (Curcuma longa L.) is largely due to the presence of phyto-constituent 'curcumin.' Curcumin has been found to possess a myriad of therapeutic activities ranging from anti-inflammatory to neuroprotective. Lack of requisite high curcumin containing genotypes and variation in the curcumin content of turmeric at different agro climatic regions are the major stumbling blocks in commercial production of turmeric. Curcumin content of turmeric is greatly influenced by environmental factors...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27750391/clarification-on-altitude-training
#12
LETTER
Grégoire P Millet, Franck Brocherie, Raphael Faiss, Olivier Girard
No abstract text is available yet for this article.
January 1, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/27736249/training-at-2100-m-altitude-affects-running-speed-and-session-rpe-at-different-intensities-in-elite-middle-distance-runners
#13
Avish P Sharma, Laura A Garvican-Lewis, Brad Clark, Jamie Stanley, Eileen Y Robertson, Philo U Saunders, Kevin G Thompson
PURPOSE: This investigation sought to determine the effect of training at 2100 metres natural altitude on running speed (RS) during training sessions over a range of intensities relevant to middle-distance running performance. METHODS: In an observational study, 19 elite middle-distance runners (mean ± SD; Age, 25 ± 5 years; VO2 max, 71 ± 5 ml.kg.min-1) completed either 4-6 weeks of sea-level training (CON, n = 7), or a 4-5 week natural altitude training camp living at 2100 m and training at 1400-2700 m (ALT, n = 12) following a period of sea-level training...
October 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27710149/heightened-exercise-induced-oxidative-stress-at-simulated-moderate-level-altitude-vs-sea-level-in-trained-cyclists
#14
Alex J Wadley, Ida S Svendsen, Michael Gleeson
Altitude exposure can exaggerate the transient increase in markers of oxidative stress observed following acute exercise. However, these responses have not been monitored in endurance-trained cyclists at altitudes typically experienced whilst training. Endurance trained males (n=12; mean (±SD) age: 28 ± 4 years, V̇O2max 63.7 ± 5.3 ml/kg/min) undertook two 75-min exercise trials at 70% relative V̇O2max; once in normoxia and once in hypobaric hypoxia, equivalent to 2000m above sea level (hypoxia). Blood samples were collected before, immediately after and 2 h post-exercise to assess plasma parameters of oxidative stress (protein carbonylation (PC), thiobarbituric acid reactive substances (TBARS), total antioxidant capacity (TAC) and catalase activity (CAT))...
October 6, 2016: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/27667380/cardiovascular-effects-of-altitude-on-performance-athletes
#15
Ankit B Shah, Neil Coplan
Altitude plays an important role in cardiovascular performance and training for athletes. Whether it is mountaineers, skiers, or sea-level athletes trying to gain an edge by training or living at increased altitude, there are many potential benefits and harms of such endeavors. Echocardiographic studies done on athletes at increased altitude have shown evidence for right ventricular dysfunction and pulmonary hypertension, but no change in left ventricular ejection fraction. In addition, 10% of athletes are susceptible to pulmonary hypertension and high-altitude pulmonary edema...
2016: Reviews in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27634605/respiratory-muscle-training-and-exercise-endurance-at-altitude
#16
Samuel Helfer, Joseph Quackenbush, Michael Fletcher, David R Pendergast
BACKGROUND: Climbing and trekking at altitude are common recreational and military activities. Physiological effects of altitude are hypoxia and hyperventilation. The hyperventilatory response to altitude may cause respiratory muscle fatigue and reduce sustained submaximal exercise. Voluntary isocapnic hyperpnea respiratory muscle training (VIHT) improves exercise endurance at sea level and at depth. The purpose of this study was to test the hypothesis that VIHT would improve exercise time at altitude [3600 m (11,811 ft)] compared to control and placebo groups...
August 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27622961/yoga-practice-improves-physiological-and-biochemical-status-at-high-altitudes-a-prospective-case-control-study
#17
RANDOMIZED CONTROLLED TRIAL
Gidugu Himashree, Latika Mohan, Yogesh Singh
UNLABELLED: Context • High altitude (HA) is a psychophysiological stressor for natives of lower altitudes. Reducing the morbidity and optimizing the performance of individuals deployed in an HA region has been attempted and reported with varied results. Objective • The present study intended to explore the effects of comprehensive yogic practices on the health and performance of Indian soldiers deployed at HAs. Design • The research team designed a prospective, randomized, case-control study...
September 2016: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/27587868/reference-values-for-the-diffusing-capacity-determined-by-the-single-breath-technique-at-different-altitudes-the-latin-american-single-breath-diffusing-capacity-reference-project
#18
Juan Carlos Vázquez-García, Rogelio Pérez-Padilla, Alejandro Casas, Patricia Schönffeldt-Guerrero, Jonatan Pereira, Claudia Vargas-Domínguez, Mónica Velázquez-Uncal, David Martínez-Briseño, Luis Torre-Bouscoulet, Laura Gochicoa-Rangel
BACKGROUND: The lung diffusion capacity (DLCO) determined by the single-breath technique greatly helps in the differential diagnosis and classification of severity of common lung diseases. However, widespread use of single-breath DLCO tests in Latin America has been limited, in part, by the lack of appropriate reference values. Our objective was to derive robust reference equations for single-breath DLCO from healthy Hispanic adults, using the most recent guidelines and taking into account altitude above sea level and hemoglobin...
September 2016: Respiratory Care
https://www.readbyqxmd.com/read/27583364/exercise-induced-hypoxaemia-developed-at-sea-level-influences-responses-to-exercise-at-moderate-altitude
#19
Anne-Fleur Gaston, Fabienne Durand, Emma Roca, Grégory Doucende, Ilona Hapkova, Enric Subirats
PURPOSE: The aim of this study was to investigate the impact of exercise-induced hypoxaemia (EIH) developed at sea-level on exercise responses at moderate acute altitude. METHODS: Twenty three subjects divided in three groups of individuals: highly trained with EIH (n = 7); highly trained without EIH (n = 8) and untrained participants (n = 8) performed two maximal incremental tests at sea-level and at 2,150 m. Haemoglobin O2 saturation (SpO2), heart rate, oxygen uptake (VO2) and several ventilatory parameters were measured continuously during the tests...
2016: PloS One
https://www.readbyqxmd.com/read/27573155/crew-recovery-and-contingency-planning-for-a-manned-stratospheric-balloon-flight-the-stratex-program
#20
Anil S Menon, David Jourdan, Derek M Nusbaum, Alejandro Garbino, Daniel M Buckland, Sean Norton, Johnathan B Clark, Erik L Antonsen
The StratEx program used a self-contained space suit and balloon system to loft pilot Alan Eustace to a record-breaking altitude and skydive from 135,897 feet (41,422 m). After releasing from the balloon and a stabilized freefall, the pilot safely landed using a parachute system based on a modified tandem parachute rig. A custom spacesuit provided life support using a similar system to NASA's (National Aeronautics and Space Administration; Washington, DC USA) Extravehicular Mobility Unit. It also provided tracking, communications, and connection to the parachute system...
October 2016: Prehospital and Disaster Medicine
keyword
keyword
51720
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"