Gholizadeh H, Hill A, Nantel J The effect of various arm and walking conditions on postural dynamic stability when recovering from a trip perturbation. Gait Posture. 2020 Feb;76:284-289. doi: 10.1016/j.gaitpost.2019.11.010. Epub 2019 Dec 17.
Kalinowska-Lyszczarz A, Guo Y, Lucchinetti CF Update on pathology of central nervous system inflammatory demyelinating diseases. Neurol Neurochir Pol. 2022;56(3):201-209. doi: 10.5603/PJNNS.a2022.0046. Epub 2022 Jun 27.
Koh SB, Park YM, Kim MJ, Kim WS Influences of elbow, shoulder, trunk motion and temporospatial parameters on arm swing asymmetry of Parkinson's disease during walking. Hum Mov Sci. 2019 Dec;68:102527. doi: 10.1016/j.humov.2019.102527. Epub 2019 Nov 2.
Lewek MD, Poole R, Johnson J, Halawa O, Huang X Arm swing magnitude and asymmetry during gait in the early stages of Parkinson's disease. Gait Posture. 2010 Feb;31(2):256-60. doi: 10.1016/j.gaitpost.2009.10.013. Epub 2009 Nov 27.
Meyns P, Bruijn SM, Duysens J The how and why of arm swing during human walking. Gait Posture. 2013 Sep;38(4):555-62. doi: 10.1016/j.gaitpost.2013.02.006. Epub 2013 Mar 13.
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.
