In order to solve the problems among community-dwelling elderly persons, mutual support is indispensable. In this paper, an exercise program in an active aging project conducted by the authors is introduced. The aim of this project is the promotion of mutual support among the communitydwelling persons. Regarding this program, there arises a mathematical problem, that is, evaluation of the results. Although the interactions between the participants can be measured by a wearable sensor, it is difficult to theoretically evaluate from the data if the significant change is brought about by the program. In this paper, a statistical hypothesis testing for this evaluation is presented. In the test, a network model is used as a statistical model of the networks. Application to testing gender difference is also shown.
