Diallo O, Dore E, Duche P, Van Praagh E Effects of plyometric training followed by a reduced training programme on physical performance in prepubescent soccer players. J Sports Med Phys Fitness. 2001 Sep;41(3):342-8.
Fouré A, Nordez A, Cornu C Plyometric training effects on Achilles tendon stiffness and dissipative properties. J Appl Physiol (1985). 2010 Sep;109(3):849-54. doi: 10.1152/japplphysiol.01150.2009. Epub 2010 Jun 24.
Ramírez-Campillo R, Andrade DC, Izquierdo M Effects of plyometric training volume and training surface on explosive strength. J Strength Cond Res. 2013 Oct;27(10):2714-22. doi: 10.1519/JSC.0b013e318280c9e9.
Thomas K, French D, Hayes PR The effect of two plyometric training techniques on muscular power and agility in youth soccer players. J Strength Cond Res. 2009 Jan;23(1):332-5. doi: 10.1519/JSC.0b013e318183a01a.
Váczi M, Tollár J, Meszler B, Juhász I, Karsai I Short-term high intensity plyometric training program improves strength, power and agility in male soccer players. J Hum Kinet. 2013 Mar 28;36:17-26. doi: 10.2478/hukin-2013-0002. Print 2013 Mar.
Ziv G, Lidor R Vertical jump in female and male basketball players--a review of observational and experimental studies. J Sci Med Sport. 2010 May;13(3):332-9. doi: 10.1016/j.jsams.2009.02.009. Epub 2009 May 13. Review.
Ziv G, Lidor R Vertical jump in female and male volleyball players: a review of observational and experimental studies. Scand J Med Sci Sports. 2010 Aug;20(4):556-67. doi: 10.1111/j.1600-0838.2009.01083.x. Review.
Effectiveness of 6 Weeks Plyometric Training on Agility Among University Male Students.
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.
