Fig. 5. Box-and-whisker diagram showing the variability of muscle performance parameters within and among individual frogs. For each performance parameter, the coefficient of variation (CV) was found from the data for each frog. The boxes represent 50% of the data range and the whiskers bracket the interquartile range of observed data compared across individuals. Bold horizontal bars represent the median CV found among frogs. High median CV values indicate large variability within individual frogs, whereas broad boxes signify high variability among individuals.