Partial regression plots showing the individual effects of variables on MSAr during running (n=27). Partial regression plots showingthe individual effects of variables on MSAr during running (n=27). (A) Plots are shown after controlling for lordosis angular displacement amplitude (LLamp; A) and lordosis angular displacement velocity (LLvel; B) in the multiple regression model. To compare the strength of effect sizes, variables are shown as the scaled (z-score) model residuals, and regression coefficients are shown as standardized β values (Table 3). Eric R. Castillo, and Daniel E. Lieberman J Exp Biol 2018;221:jeb177949 © 2018. Published by The Company of Biologists Ltd