Musculoskeletal variables that appear to contribute to the greater strength and larger muscle volume of long-term resistance-trained (LTT) compared with untrained (UT) men. Data are percentage differences in group mean values for maximal voluntary torque (MVT), quadriceps volume (QVOL), sum of maximal anatomical cross-sectional area (QACSAMAX), quadriceps physiological cross-sectional area (QPCSA); quadriceps effective physiological cross-sectional area (QEFFPCSA), mean quadriceps angle of pennation (QΘP), mean quadriceps fascicle length (QFL), maximum voluntary specific tension (ST), and patella tendon moment arm (PTMA) between untrained and long-term resistance-trained participants.