Abstract: In this work, an intervention study is designed whose objective is to motivate physical activity with tools that adjust as much as possible to the subject's capacities. The methodology uses physiological information to facilitate interaction by mean of low-cost devices that allow these parameters to be measured and related to the emotional state of the subjects. This is a means to assess people's capabilities and needs and translate them into computable profiles. These profiles feed a musical videogame designed specifically for the application of this methodology . In this way, the user experience is more motivating and pleasant since the game takes them to the appropriate emotional state to avoid boredom and stress. Keywords: Physiological signals, physical activity, affective computing, adaptative videogame.