Fig. 2From: Lower-limb muscle strength: normative data from an observational population-based studyThe association between age and muscle quality of the hip flexors for men and women (a and c), and hip abductors for men and women (b and d). Regression line (solid) and 95% prediction interval (dashed), regression equations and adjusted R2 values are shown. Abbreviations: HF hip flexors; HA hip abductors; Agec centred (mean 55.7 yr)Back to article page