Formation of the psychological profile of high school students in the dynamics of martial arts classes

The aim of the study was to theoretically substantiate and experimentally verify the effectiveness of using combat sports within physical education classes as a factor in developing resilience in senior school students. An additional objective was to develop an integral indicator for assessing the relationship between resilience and psychophysiological stress. The research methods included analysis and synthesis of scientific literature, a pedagogical experiment, psychometric assessment using the Connor–Davidson Resilience Scale (CD-RISC), evaluation of the psychophysiological stress index, and statistical analysis (non-parametric tests, effect size calculation using r and Cohen's d). The results demonstrated a significant increase in resilience levels among students engaged in combat sports (p < 0.01–0.001). The relative increase ranged from 23.0% to 33.0%, with absolute gains of 5.31–13.93 points. A cumulative effect of adaptation was observed, reflected in progressively increasing effect sizes (r = 0.52–0.64; d > 1.2). An original integral coefficient RS (R/PPI) was proposed, which increased from 0.54 to 2.04, indicating a shift from stress dominance to adaptive resource predominance. A critical threshold of adaptation balance (RS ≈ 1.0) was identified. The scientific novelty lies in the development and approbation of the RS coefficient as an indicator of the balance between resilience and psychophysiological stress, as well as in establishing its dynamic patterns in the context of combat sports training. The practical significance of the study is associated with the possibility of applying the proposed approach to optimize physical education programs, enhance students' stress resilience, and implement simple tools for monitoring psychophysiological adaptation in school settings.