Author(s): CHIEN, T.H., CHEN, J.Y., CHI, L., Institution: NATIONAL TAIWAN NORMAL UNIVERSITY, Country: TAIWAN, Abstract-ID: 1699

Introduction
Holmes and Collins (2001) developed a PETTLEP imagery training model based on the functional equivalence hypothesis, suggesting that there is a similar neural network involved in both motor imagery training and the actual execution of movements. From this point forward, numerous studies have been conducted by using PETTLEP imagery training model to examine the effects of imagery on performance. Previous research has also confirmed the significant effects of PETTLEP imagery training on sports performance, cognitive functions, rehabilitation, and fitness activities. Researchers have conducted systematic literature reviews on PETTLEP, but there has yet to be an integrated analysis specifically focusing on competitive sports. Consequently, it remains unclear the magnitude of its effectiveness and the optimal intervention frequency to enhance performance.
Methods
This study conducted a systematic literature review combined with integrated analysis following the PRISMA process. The data base of the articles: PubMed, PsycINFO, Scopus, Web of Science and Airiti Library (Mandarin).Systemic Literature review, meta-analysis article and qualitative researches wouldn’t be recruited. Also, single case studies, studies with single subject / A-B designs and with other intervention were excluded (i.e. physical practice, action observation). A total of 17 articles were recruited.
Results
The total 17 articles include Archery, Basketball, Hockey, Hulder, Soccer, Volleyball, Tennis. Meta-analysis revealed that PETTLEP imagery training yielded a significant effect size of d = 1.12, 95% CI [0.80, 1.44] in enhancing competitive sports performance. It was found that PETTLEP imagery interventions significantly enhanced sport performance. The results showed that twice session a week had significant effect size of d = 0.98, 95% CI [0.57, 1.39] in improve sport performance.
Discussion
The Based on previous integrated analyses of psychological practices and theoretical and applied aspects of imagery, practical implications were discussed. Coaches, athletes, and sports psychologists are recommended to incorporate PETTLEP imagery training into training sessions at least twice a week for 10 minutes each session, which is expected to benefit athletes sport performance.