An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
van Ingen Schenau GJ, Bobbert MF, Ettema GJ, de Graaf JB, Huijing PA.van Ingen Schenau GJ, et al. Among authors: ettema gj.J Biomech. 1988;21(10):815-24. doi: 10.1016/0021-9290(88)90014-0.J Biomech. 1988.PMID: 3225268
van den Tillaar R, Ettema G.van den Tillaar R, et al. Among authors: ettema g.J Sports Sci. 2009 Jul;27(9):949-55. doi: 10.1080/02640410902960502.J Sports Sci. 2009.PMID: 19629844
van den Tillaar R, Ettema G.van den Tillaar R, et al. Among authors: ettema g.J Sports Sci. 2010 Mar;28(5):529-35. doi: 10.1080/02640411003628022.J Sports Sci. 2010.PMID: 20373201