Magnetic Resonance Imaging — Brain Blood Flow Responses During Exercise
Citation(s)
Barnes JN, Corkery AT Exercise Improves Vascular Function, but does this Translate to the Brain? Brain Plast. 2018 Dec 12;4(1):65-79. doi: 10.3233/BPL-180075.
Black MA, Cable NT, Thijssen DH, Green DJ Impact of age, sex, and exercise on brachial artery flow-mediated dilatation. Am J Physiol Heart Circ Physiol. 2009 Sep;297(3):H1109-16. doi: 10.1152/ajpheart.00226.2009. Epub 2009 Jul 24.
Duckles SP, Miller VM Hormonal modulation of endothelial NO production. Pflugers Arch. 2010 May;459(6):841-51. doi: 10.1007/s00424-010-0797-1. Epub 2010 Mar 7.
Matthews KA, Xu W, Gaglioti AH, Holt JB, Croft JB, Mack D, McGuire LC Racial and ethnic estimates of Alzheimer's disease and related dementias in the United States (2015-2060) in adults aged >/=65 years. Alzheimers Dement. 2019 Jan;15(1):17-24. doi: 10.1016/j.jalz.2018.06.3063. Epub 2018 Sep 19.
Mitchell GF Effects of central arterial aging on the structure and function of the peripheral vasculature: implications for end-organ damage. J Appl Physiol (1985). 2008 Nov;105(5):1652-60. doi: 10.1152/japplphysiol.90549.2008. Epub 2008 Sep 4.
Moreau KL, Stauffer BL, Kohrt WM, Seals DR Essential role of estrogen for improvements in vascular endothelial function with endurance exercise in postmenopausal women. J Clin Endocrinol Metab. 2013 Nov;98(11):4507-15. doi: 10.1210/jc.2013-2183. Epub 2013 Oct 3.
Smith KJ, Ainslie PN Regulation of cerebral blood flow and metabolism during exercise. Exp Physiol. 2017 Nov 1;102(11):1356-1371. doi: 10.1113/EP086249. Epub 2017 Sep 30.
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.