THE THE FOUR SQUARE STEP INTERVENTION IS MORE EFFECTIVE IN IMPROVING THE DYNAMIC BALANCE RATHER THAN BALANCE STRATEGY EXERCISE IN THE ELDERLY OF VILLAGE OF TONJA, EASTERN DENPASAR, BALI - Laksmita, Putu Ayunia (Bachelor of Physiotherapy and Physiotherapy Profession Study Program, Faculty of Medicine, Udayana University in collaboration with Indonesian Physiotherapy Association (IPA), 2018)