PHYS THER
Vol. 89, No. 12, December 2009, pp. 1289-1291
DOI: 10.2522/ptj.20090218.ar
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Leonardo O.P. Costa, Christopher G. Maher, Jane Latimer, Paul W. Hodges, Robert D. Herbert, Kathryn M. Refshauge, James H. McAuley and Matthew D. Jennings


Because this article has no abstract, we have provided an extract of the full text and any section headings.

We welcome the opportunity to comment on Fritz's1 opinions and interpretations of our article2 evaluating the efficacy of motor control exercises and to respond to some of the issues she has raised.

In her commentary, Fritz has made the assumption that we used the placebo design in order to examine the mechanism of effect of motor control exercise; however, this was not the aim of our study. There seems to be confusion around use of the word "efficacy," with Fritz using the terms "efficacy" and "mechanism of effect" interchangeably. We believe that the terms have quite distinct and different meanings. We established the efficacy of motor control exercises by comparing outcomes in patients who received the exercises and those who received a placebo, which is the usual definition of treatment efficacy from an epidemiological point of view.3 The objectives of our study were nominated a priori in our published protocol,4 . . . [Full Text of this Article]


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