Fig. 8. Relationship of relaxation time to parvalbumin expression in sheepshead and kingfish muscle. For each fish (different colored symbols), the relationship of relaxation time to the relative expression of the Parv1 isoform is shown. r² values are given for lines for which there is a substantial variation in the independent variable (and at least three points). All four kingfish show the same pattern of increasing relaxation time with increasing relative contribution of Parv1. Four of the five sheepshead show the same pattern in the red muscle but no clear trend is evident in the sheepshead white muscle data.