Given you're still responding I'll assume you still have interest in the subject.
Still reading; still interested; but i will no longer make any of my own comments or respond to comments.
Another study of the effect of correcting asymmetry (due to foot alignment):
What Does the Research Say?
Many of the claims related to the benefits of both Cleat Wedges and ITS Wedges are anecdotal. Although little published research
exists on their application and/or performance benefits; they remain widely used and appear to provide instant benefits at
minimal expense. In a robust repeatedmeasures design study, Dinsdale (author) and Williams (2010) examined the effect of ITS
Wedges on cycling performance in riders with varying levels of forefoot varus / forefoot supinatus. Unlike previous studies, this
study reported forefoot varus measurements for each rider, and the corresponding number of ITS Wedges used in testing. Unique to
this study, the results demonstrated a strong correlation between power output and cyclists with varying amounts of forefoot varus /
forefoot supinatus. Consequently, those with the highest levels of forefoot varus / forefoot supinatus demonstrated increased anaerobic
mean power outputs of approximately 10%.
Full paper here:http://www.njdsportsinjuries.co.uk/inde ... 532282.pdf
" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
Dr. Ed Burke (previously mentioned) is the author of High-tech Cycling. I can't cut & paste from google books, but you can see his anaylsis of pedaling dynamics and comments on asymmetry here : http://books.google.com/books?id=msdT4i ... er&f=false