Som JSE skriver så brukes Wilks også for enkeltøvelser. Men det er egentlig ikke helt riktig bruk, siden bakgrunnsdataene som er brukt for å lage Wilks formel er basert på sammenlagtresultater. Det gjør at tyngre/lettere løftere vil bli favorisert avhengig av hvilken øvelse det er snakk om.
Fra
http://web.archive.org/web/20120204064459/http://www.isu.edu/~andesean/wform.htm :
The problem here is that the Wilks vales were developed for t-o-t-a-ls and not for individual lifts. Therefore it is even more inappropriate to use any of the systems for ranking anything but what they were determined for - namely TOTALS. Therefore when the Wilks coefficients are applied to single lifts different effects occur. Bench increases most with body weight so when the Wilks coefficients are used to rank bench press meets this greatly favors the heavier lifters. When the Wilks coefficients are used on a single lift deadlift meet it greatly favors the lighter lifters since deadlifts alone do not increase as fast with body weight as total does. It may be appropriate for squats but it probably favors the lighter lifters again if it is applied to single lift squats. A fit to individual lift data is what is needed if individual lifts are compared.