post in comparison to pre physical exercise intervention, the examined older adults showed higher maximal voluntary isometric ankle plantarflexion and knee extension joint moments and higher tendon-aponeurosis stiffness at the TS and QF MTU. The above findings are in accordance with the literature and support the view that in old age, not only muscles but also tendons are highly responsive to training and that a physical exercise intervention with a high magnitude of mechanical stress and strain imposed on the MTU can increase contractile strength and tendon-aponeu- rosis stiffness in the elderly