The purpose of this study was to clarify the efforts of older women to practice during a resistance exercise class and their exercise behavior change and related factors 2 years post the classes from a qualitative analysis. The exercise class was a self-weighted resistance exercise training for muscle strength maintenance designed by Tetsuo Fukunaga. Eighteen elderly women of the subjects of this study, participated in the exercise class for muscle strength maintenance for care prevention held in F town, Hokkaido, Japan, in 2019 for three months. Interviews were conducted four times in August and November 2020 and October and November 2021, and semi-structured interviews were conducted using the recall method. Responses were recorded and converted to text data. The interview data organized at three months, six months, one year, and two years after two years post the exercise class were analyzed for qualitative factors related to exercise practice effort and exercise behavior change using KH coder as a text mining method. The practical status of exercise was evaluated based on the total number of squats performed at home during the class period records. As a result, 66.7% of the subjects continued to exercise as maintenance and action phases two years post the classes. The co-occurrence networks characteristics of the qualitative factors obtained from the linguistic trends of the continuation group over the two-year period were "program content," "effectiveness of practice," "human and environmental support," "self-efficacy," and "simplicity of exercise." Correspondence analysis by exercise practice effort showed that in the continuation group, the high practice group, which had more exercise practice in class, showed positive language characteristics such as "habitual effort state," "effectiveness of practice," "social support," "simplicity of exercise," and "positive evaluation of exercise."
