Fig. 3From: Anatomical cross-sectional area of the quadriceps femoris and sit-to-stand test score in middle-aged and elderly population: development of a predictive equationThe relationship between quadriceps femoris muscle size and performance of physical function. Correlation coefficients between anatomical cross-sectional area of quadriceps femoris and a knee extension torque, b leg extension power, c, d the time, and e, f the power of sit-stand test score for each condition were presented. Close and open circles indicate males and females, respectivelyBack to article page