I. Introduction
Falls are a real danger to the level of well-being in elderly, typically resulting in a deterioration in personal care as well as in physical and social activities. Although the causes of falls are multifaceted, outstanding inherent fall-risk aspects are age-related declines like those related to balance maintenance, posture control, and cognitive ability [1]. Various physical exercising programs, tailored explicitly for the elderly, have been developed, as fall prevention measures, to increase the muscle strength of the lower limbs, to enhance balance control and to increase motion range [2].