(1.Scientific Research Institute of Sports，Zhejiang University of Technology，Hangzhou 310014，China； 2.Department of Physical Education，Yangzhou Polytechnic Institute，Yangzhou 225127，China)
Abstract: Based on the actor-critic models framework of reinforcement learning, this paper explores the mechanism of the relationship between college students' physical fitness test value-added attention and exercise adherence. A questionnaire survey was conducted on 1 219 college students to investigate the relationship among physical fitness test value-added attention, internal motivation, implementation intention and exercise adherence. The results show that: (1) There was a significant positive correlation between college students’ physical test value-added attention and exercise adherence (r=0.40), but in the chain mediation model, the direct predictive effect was not significant (ES=0.0446). (2) Internal motivation and implementation intention played a significant mediating role. The mediating effect was composed of the independent mediating effect of internal motivation and implementation intention, as well as the chain mediating effect of the two, and the effect value was 0.1026, 0.1354 and 0.0902,respectively, accounting for 27.52%, 36.32% and 24.20% of the total effect, respectively. (3) The chain mediation effect of the two was lower than their independent mediation effect, and there was a statistical difference between the independent mediation effect of exercise execution intention and the independent mediation effect. The research results verify that the value-added attention of physical test cannot directly affect exercise adherence, but it can indirectly affect exercise adherence through internal motivation or implementation intention alone, and it can also indirectly affect exercise adherence through the chain intermediary of internal motivation and implementation intention. Reinforcement learning theory can effectively guide the construction and verification of future exercise behavior intermediary models, and subsequent research needs to further explore the specific mechanism of the model's longitudinal development of prediction bias and value-added evaluation.
Keywords: school physical education；physical fitness test value-added attention；exercise adherence；internal motivation；implementation intention；chain mediation effect