Table 4.

Correlation Coefficients for Measures of Muscle Architecture and Size and Measures of Activity and Participation^a

^aPODCI=Pediatric Outcomes Data Collection Instrument; ASKp=Activities Scale for Kids, Performance Version; ISOM KE torque=isometric knee extensor peak torque (N·m); RF=rectus femoris; VL=vastus lateralis. n=18 for all variables except ASKp Transfers subdomain (n=16) and ASKp Standing Skills subdomain (n=17) because of missing data. Coefficients are Pearson correlation coefficients (r), unless otherwise indicated.

^b Spearman rho correlation coefficient (ρ) because of a nonnormal distribution.

^c P<.05.