Due to the decline of neuromuscular control with aging, elderly people often fail to respond to environmental stimuli. Responses are often delayed when the stimuli are sudden, and this may result in losing balance or falling. Exercise programs help improve balance and reaction, in which concentration (vision and agility) is an important part. Thus, improving concentration, balance control and coordination can increase agility, and improve information receiving, transferring, integrating and feedback. Home-based exercise training can improve functional capability and reduce the risk of falling, which can serve as a health enhancement program for elderly people in our society.