Additional file 1: Figure S1. of Quadriceps muscle strength, radiographic knee osteoarthritis and knee pain: the ROAD study Shigeyuki Muraki Toru Akune Masatoshi Teraguchi Ryohei Kagotani Yoshiki Asai Munehito Yoshida Fumiaki Tokimura Sakae Tanaka Hiroyuki Oka Hiroshi Kawaguchi Kozo Nakamura Noriko Yoshimura 10.6084/m9.figshare.c.3603965_D1.v1 https://springernature.figshare.com/articles/presentation/Additional_file_1_Figure_S1_of_Quadriceps_muscle_strength_radiographic_knee_osteoarthritis_and_knee_pain_the_ROAD_study/4341257 Quadriceps muscle strength by age strata (PPT 188 kb) 2015-10-16 05:00:00 Cohort study Epidemiology Osteoarthritis Pain Muscle