Debevec T, Keramidas ME, Norman B, Gustafsson T, Eiken O, Mekjavic IB Acute short-term hyperoxia followed by mild hypoxia does not increase EPO production: resolving the "normobaric oxygen paradox". Eur J Appl Physiol. 2012 Mar;112(3):1059-65. doi: 10.1007/s00421-011-2060-7. Epub 2011 Jul 7.
Debevec T, Mekjavic IB Short intermittent hypoxic exposures augment ventilation but do not alter regional cerebral and muscle oxygenation during hypoxic exercise. Respir Physiol Neurobiol. 2012 Apr 30;181(2):132-42. doi: 10.1016/j.resp.2012.02.008. Epub 2012 Mar 2. Review.
Debevec T, Simpson EJ, Macdonald IA, Eiken O, Mekjavic IB Exercise training during normobaric hypoxic confinement does not alter hormonal appetite regulation. PLoS One. 2014 Jun 2;9(6):e98874. doi: 10.1371/journal.pone.0098874. eCollection 2014.
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Cardio-respiratory Responses During Hypoxic Exercise in Individuals Born Prematurely
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.
