Experimental research of impact on psychological state for adolescents with high-intensity interval training intervention.

Introduction: Rising social pressures have exacerbated adolescent mental health challenges, evidenced by increasing prevalence of anxiety, depression, and related disorders. High-intensity interval training (HIIT), characterized by short bursts of intense exercise interspersed with recovery periods, has emerged as a time-efficient intervention for psychological well-being. This study quantitatively evaluated the efficacy of HIIT in improving adolescent mental health using the Multidimensional Scale of Adolescent Psychological State (MSAPS), which assesses seven domains: self-esteem, energy, tension, anger, depression, fatigue, and confusion. Methods: A randomized controlled trial was conducted with 60 adolescents (aged 14-18 years) from Handan City Sports School. Participants were equally divided into an experimental group (HIIT intervention) and a control group (moderate-intensity continuous training). The HIIT protocol involved heart rate zones of 172 ±10 bpm, while the control group trained at 132 ± 10 bpm. Both interventions lasted 8 weeks. Pre- and post-intervention psychological assessments were performed using MSAPS, with statistical analyses employing paired t-tests for within-group comparisons and ANCOVA for between-group effects. Results: The HIIT group demonstrated significant reductions in negative affect: tension (Δ = 2.1, Discussion: HIIT's dual mechanism-stimulating endorphin/dopamine release and enhancing physical efficacy-likely underpins its psychological benefits. The findings support HIIT as a viable school-based intervention for mitigating anxiety/depression and boosting self-esteem in adolescents. These results provide empirical groundwork for integrating HIIT into physical education curricula and mental health promotion strategies, offering a practical alternative to traditional exercise modalities.