As the increase of age, many physical and psychological functions of aging and decline are derived. Through appropriate regular exercise, the impact of aging can be delayed. Based on the health problems of the elderly, this study attempts to understand the relationship between motivation and physical activity in older adults through gamification design strategies to help older adults stay healthy. Gamification design strategy is a design strategy that adds game elements in a non-game context, and to create a playing game-like experience to stimulates people's motivations and behaviors. Therefore, we conducted a questionnaire survey of 195 elderly people (over 50 years old) to analyzed the relationship between player motivation and gamification effects, further considering their individual differences such as gender, exercise frequency and game habits. The results shows the elderly people think that autonomy, sense of mission, and sense of accomplishment are all important; change is the least important. The elderly believe that major missions and calls, impact possibilities, development and achievement, social influence and empathy, and creativity and feedback are all important; scarcity and urgency, loss and avoidance are the least important. The elderly who play games agree that the sense of autonomy and accomplishment of the game is higher than that of the elderly who do not play games.