Objectives The Purpose of this study is to identify how much participants are satisfied and their exercise sustain-ability increases when sports for all instructors provide certain types of feedback.
 Methods The sampling methods used in the study is the judgment sampling which is the method of extracting samples after selecting sports for all swimming participants, who are currently enrolling in the swimming classes in Seoul, and distributed 320 questionnaires. In the actual analysis, the researcher analyzed 300 questionnaires excluding 20 questionnaires which were in discord with the question or missing some part of investigation contents. The analysis methods used in the study are SPSS 29.0 program and AMOS program. Frequency Analysis is used to analyze the respondents’ general characteristics. Exploratory factor analysis and reliability analysis are used to define the questionnaires about sports for all swimming instructors’ Feedback type, sports for all swim-ming participants’ instructors Trust and Sport Flow. Moreover, t-test and one way-ANOVA are used to identify the differences between these three variables. After that, correlation analysis is used to clarify correlations between three variables and which variables affect which variables.
 Results There was no significant difference in Sports for all swimming participants’ general characteristics by Sports for all swimming Instructors’ Feedback Type, Instructors Trust, and Sport Flow. The correlation of Sports for all swimming Instructors’ Feedback Type and Instructors Trust showed a positive correlation. Also, Instructors Trust and Sport Flow showed a statistically positive correlation. As a result of clarifying the effect of sub-factors of Sports for all swimming Instructors’ Feedback Type on sub-factors of Instructors Trust, it showed that positive general feedback performance knowledge feedback, and positive non-verbal feedback have an positive effect on sub-factors of Instructors Trust(p<0.05), while negative non-verbal feedback did not as well as in the analysis of The effect of sub-factors of Sports for all swimming Instructors’ Feedback Type on sub-factors of Sport Flow. As a result of analyzing the effect of sub-factors of Instructors Trust on sub-factors of Sport Flow, it appeared that diligence(p<0.023), openness(p<0.008), altruism(p<0.037) affecting cognitive commitment, and con-sistency(p<0.056) and ability(p<0.06) did not.
 Conclusions Firstly, there is no major difference on Instructors Trust and Sport Flow by gender, Sports for all swimming careers and frequency of exercise. Secondly, Sports for all swimming instructors’ Feedback Type has a partial effect on participants’ Instructors Trust. Specifically general positive feedback, performance knowledge feedback, and positive non-verbal feedback had a positive effect on consistency, ability and openness which are sub-factors of Instructors Trust, while negative verbal feedback had a negative effect on those three sub-factors. However, there is no effect on diligence and altruism, which are sub-factors of Instructors Trust, at all.
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