1. Analyses excluding studies using multiple baseline design were performed. The results were similar to those reported here and are available upon request from Antonis Hatzigeorgiadis.2. These are Cumming, Nordin, Horton, and Reynolds (2006); Cutton and Landin (2007); R. A. Hamilton, Scott, and MacDougall (2007); S. A. Hamilton and Fremour (1985); Kendall, Hrycaiko, Martin, and Kendall (1990); Latinjak, Torregrosa, and Renom (2011); Papaioannou, Ballon, Theodorakis, and Auwelle (2004); Patrick and Hrycaiko (1998); Rogerson and Hrycaiko (2002); Thelwell and Greenlees (2003); Thelwell and Maynard (2003); and Thomas and Fogarty (1997).