272. Research on the effectiveness of mechanical interactive system in intervening repetitive behaviors in patients with obsessive-compulsive disorder

Abstract Background The repetitive behavior of patients with obsessive-compulsive disorder seriously affects their daily life functions, and existing intervention methods have problems such as low compliance and insufficient personalization. The mechanical interaction system, with its characteristics of instant feedback and situational adaptation, provides a new path for repetitive behavior intervention, but the relevant empirical effects have not been fully verified. Methods 60 patients with obsessive-compulsive disorder were selected and randomly divided into experimental group (n = 30) and control group (n = 30). The experimental group used a customized mechanical interaction system to intervene, blocking repetitive behaviors and guiding alternative behaviors in real time through the tactile feedback module, with daily intervention for 30 minutes for 8 weeks; the control group used conventional cognitive behavioral therapy Cognitive Behavioral Therapy (CBT), and the intervention duration and frequency were the same as the experimental group. The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) repetitive behavior dimension score and frequency of repetitive behavior were used as the main evaluation indicators. Assessments were conducted before the intervention (T0), 4 weeks of intervention (T1), and 8 weeks of intervention (T2). SPSS 26.0 was used to conduct repeated measures analysis of variance. Results In Table 1, after intervention, both groups showed significant improvement in repetitive behavior indicators: intra group comparison showed that at T1 and T2, the Y-BOCS repetitive behavior score and daily frequency were significantly reduced compared to T0 (p<.05), and T2 was further reduced compared to T1 (p<.01); The scores of T2Y-BOCS repetitive behavior dimension and the decrease in daily frequency of repetitive behavior in the experimental group (54.0%, 73.3%) were both greater than those in the control group (35.7%, 46.5%), and the difference between the groups was statistically significant (p<.01); Moreover, the improvement of both indicators in the experimental group was better than that in the control group at T1, and the difference between the groups was statistically significant (p<.05). Discussion The intervention effect of mechanical interaction system on repetitive behavior in patients with obsessive-compulsive disorder is significantly better than that of conventional CBT. Its immediate tactile feedback mechanism can quickly block the repetitive behavior loop and improve intervention compliance. However, the sample size of the study is small and long-term effects have not been explored. In the future, it is necessary to expand the sample size for follow-up studies to further optimize the personalized adaptation function of the system.