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Reply from R. Tucker, T. Marle, E. V. Lambert and T. D. Noakes

We appreciate the interesting comments and insight provided in response to our article ‘The rate of heat storage mediates an anticipatory reduction in exercise intensity during cycling at a fixed rating of perceived exertion’ (Tucker et al. 2006). We find the comments to be very insightful and feel that the authors are not in conflict with what has been stated in the article. In fact, the authors have contributed significantly to the interpretation and understanding of how exercise is regulated by a complex system, as opposed to the ‘catastrophic failure’ model (Nybo & Nielsen, 2001a, b; Nybo et al. 2002). We thank them for expanding on the findings in the paper. There are, however, key issues that must be addressed.