<![CDATA[Journal of Orthopaedic & Sports Physical Therapy - Philip S. Sizer Jr, PT, PhD, OCS, FAAOMPT]]> http://www.jospt.org/philipssizerjr Wed, 30 Apr 2008 09:05:25 EST 0 Letters to the Editor-in-Chief http://www.jospt.org/issues/articleID.1318/article_detail.asp Philip S. Sizer Jr, Jean-Michel Brismée, Chad Cook, Joseph J. Godges, Christopher Showalter, Peter Huijbregts, Susan L. Edmond, Owen Legaspi, Jochen Schomacher, Andrea J. Johnson

Letters to the Editor-in-Chief of the JOSPT as follows:

  • Letter regarding the article, Does Evidence Support the Existence of Lumbar Spine Coupled Motion? A Critical Review of the Literature. J Orthop Sports Phys Ther. 2007:37(7):412. doi:10.2519/jospt.2007.0205.
  • Authors' Response. J Orthop Sports Phys Ther. 2007:37(7):412-413. doi:10.2519/jospt.2007.0206.
  • Letter regarding the article, The Effect of Anterior Versus Posterior Glide Joint Mobilization on External Rotation Range of Motion in Patients With Shoulder Adhesive Capsulitis. J Orthop Sports Phys Ther. 2007:37(7):413. doi:10.2519/jospt.2007.0207.
  • Authors' Response. J Orthop Sports Phys Ther. 2007:37(7):414-415. doi:10.2519/jospt.2007.0208.
]]> http://www.jospt.org/issues/articleID.1318/article_detail.asp Knee Position Error Detection in Closed and Open Kinetic Chain Tasks During Concurrent Cognitive Distraction http://www.jospt.org/issues/articleID.652/article_detail.asp Ronald D. Dunlap, Clayton D. Gable, Philip H. Marshall, Philip S. Sizer Jr, Russell A. Taylor
It is important to establish whether presumed differences among varieties of motor responses are manifested in related differences in performance. In order to determine possible functional distinctions between closed and open kinetic chain tasks, participants' performance in the presence or absence of cognitive distraction on an error-detection task was assessed. Individual testing of participants consisted of knee extension and flexion movements to experimenter-defined positions, approximating the 25th, 50th, and 75th percentile of the participants' range of motion on the apparatus. Performance under conditions of distraction was significantly worse than in the absence of distraction. Performance using longer movements was significantly more accurate. No substantial differences were found between closed and open kinetic chain movements. Limitations of this research for the distinction between open and closed chain tasks are addressed, and clinical implications of the effects of distraction are presented. J Orthop Sports Phys Ther. 1998;28(2):81-87. Key Words: proprioception, kinetic chain, knee, movement]]> http://www.jospt.org/issues/articleID.652/article_detail.asp