Alexander JK, Hartley LH, Modelski M, Grover RF Reduction of stroke volume during exercise in man following ascent to 3,100 m altitude. J Appl Physiol. 1967 Dec;23(6):849-58. doi: 10.1152/jappl.1967.23.6.849. No abstract available.
Beidleman BA, Staab JE, Muza SR, Sawka MN Quantitative model of hematologic and plasma volume responses after ascent and acclimation to moderate to high altitudes. Am J Physiol Regul Integr Comp Physiol. 2017 Feb 1;312(2):R265-R272. doi: 10.1152/ajpregu.00225.2016. Epub 2016 Dec 30.
Berger NJ, Campbell IT, Wilkerson DP, Jones AM Influence of acute plasma volume expansion on VO2 kinetics, VO2 peak, and performance during high-intensity cycle exercise. J Appl Physiol (1985). 2006 Sep;101(3):707-14. doi: 10.1152/japplphysiol.00154.2006. Epub 2006 May 11.
Brothers MD, Wilber RL, Byrnes WC Physical fitness and hematological changes during acclimatization to moderate altitude: a retrospective study. High Alt Med Biol. 2007 Fall;8(3):213-24. doi: 10.1089/ham.2007.8308.
Chapman RF, Laymon AS, Levine BD Timing of arrival and pre-acclimatization strategies for the endurance athlete competing at moderate to high altitudes. High Alt Med Biol. 2013 Dec;14(4):319-24. doi: 10.1089/ham.2013.1022.
Chapman RF, Stickford JL, Levine BD Altitude training considerations for the winter sport athlete. Exp Physiol. 2010 Mar;95(3):411-21. doi: 10.1113/expphysiol.2009.050377. Epub 2009 Oct 16.
Coles MG, Luetkemeier MJ Sodium-facilitated hypervolemia, endurance performance, and thermoregulation. Int J Sports Med. 2005 Apr;26(3):182-7. doi: 10.1055/s-2004-820989.
Coyle EF, Hopper MK, Coggan AR Maximal oxygen uptake relative to plasma volume expansion. Int J Sports Med. 1990 Apr;11(2):116-9. doi: 10.1055/s-2007-1024774.
Fortney SM, Wenger CB, Bove JR, Nadel ER Effect of blood volume on forearm venous and cardiac stroke volume during exercise. J Appl Physiol Respir Environ Exerc Physiol. 1983 Sep;55(3):884-90. doi: 10.1152/jappl.1983.55.3.884.
Fulco CS, Muza SR, Beidleman BA, Demes R, Staab JE, Jones JE, Cymerman A Effect of repeated normobaric hypoxia exposures during sleep on acute mountain sickness, exercise performance, and sleep during exposure to terrestrial altitude. Am J Physiol Regul Integr Comp Physiol. 2011 Feb;300(2):R428-36. doi: 10.1152/ajpregu.00633.2010. Epub 2010 Dec 1.
Fulco CS, Rock PB, Cymerman A Maximal and submaximal exercise performance at altitude. Aviat Space Environ Med. 1998 Aug;69(8):793-801.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
