On “Muscle architecture predicts maximum strength…” Moreau NG, Simpson KN, Teefey SA, Damiano DL. Phys Ther. 2010;90:1619–1630.

Regarding Figure 2 in this article,¹ I would like to note the apparent conflict between what the scatterplots in Figure 2 show and what the regression models state. The strongly negative y-intercept values in the models do not correspond to the obviously positive values for the intercepts in the scatterplots. The prediction equations shown are certainly the appropriate ones given the hypotheses of the study. However, what the scatterplots actually show are prediction models for rectus femoris and vastus lateralis muscle thickness, not for isometric peak torque. Scatterplots with peak isometric torque on the y-axis and and muscle thickness on the x-axis would alleviate the visual conflict between the two and facilitate understanding of the data.

• © 2011 American Physical Therapy Association