Multiple regressions within athletes, testing for relationships with performance (IAAF scores) with age and weight added as covariates.

FA values are residuals of the FA index on the athletes’ primary events. Results are shown first for individual traits (F6,66 = 5.43, p2 = 0.27) and then for composite FA (F4,68 = 8.04, p2 = 0.28). P-values for the predicted relationship between FA and performance are directional (see Methods), and statistical significance is indicated by asterisks.Multiple regressions within athletes, testing for relationships with performance (IAAF scores) with age and weight added as covariates.