University of Tehran Journal of Sports and Motor Development and Learning 2008-9333 15 4 2023 12 22 The Effect of Contextual Interference and Self-Regulation on Transfer of Volleyball Services The Effect of Contextual Interference and Self-Regulation on Transfer of Volleyball Services 71 86 93261 10.22059/jsmdl.2023.358985.1719 FA Sepehr Ferdousi Department of Behavioral and Cognitive Sports Sciences, Faculty of Sport Sciences and Health, University of Tehran, Tehran , Iran. Mahdi Shahbazi Department of Behavioral and Cognitive Sports Sciences, Faculty of Sport Sciences and Health, University of Tehran , Tehran, Iran. Elahe Arabameri Department of Behavioral and Cognitive Sports Sciences, Faculty of Sport Sciences and Health , University of Tehran, Tehran, Iran. Journal Article 2023 05 10 <strong>Introduction</strong><strong>: </strong>The purpose of present study was to test the effect of contextual interference and self-regulation on the transfer of volleyball services (underhand and windmill service).<br /><strong>Methods:</strong> Participants were 39 male students (20-25 years old) were randomly assigned to one of three groups (blocked, random and self-regulation) and performed total of 40 trials of volleyball service each session (6 sessions). The blocked group practiced 40 trials of one service each session but the random group randomly practiced both services. In self-regulated group, the type of services in each session was determined by subjects. The transfer test was conducted one week after practice period in 5 trials. In order to analyze the data, the one-way analysis of variance and the Tukey’s post hoc tests were used.<br /><strong>Results: </strong>The comparison between the pre-test and transfer test showed that the difference between blocked and random groups was not statically significant. The  self-regulation group had higher transfer scores compared to blocked and random groups.<br /><strong>Conclusion:</strong> The results of present work support the contexuual interference affect but it’s not significant. Self-regulated practices involve the subjects in learning processes. Also, with his method, they participate more activity in determining the characteristics of the exercise. These factors lead to the improvement of learning and better performance.  <strong>Introduction</strong><strong>: </strong>The purpose of present study was to test the effect of contextual interference and self-regulation on the transfer of volleyball services (underhand and windmill service).<br /><strong>Methods:</strong> Participants were 39 male students (20-25 years old) were randomly assigned to one of three groups (blocked, random and self-regulation) and performed total of 40 trials of volleyball service each session (6 sessions). The blocked group practiced 40 trials of one service each session but the random group randomly practiced both services. In self-regulated group, the type of services in each session was determined by subjects. The transfer test was conducted one week after practice period in 5 trials. In order to analyze the data, the one-way analysis of variance and the Tukey’s post hoc tests were used.<br /><strong>Results: </strong>The comparison between the pre-test and transfer test showed that the difference between blocked and random groups was not statically significant. The  self-regulation group had higher transfer scores compared to blocked and random groups.<br /><strong>Conclusion:</strong> The results of present work support the contexuual interference affect but it’s not significant. Self-regulated practices involve the subjects in learning processes. Also, with his method, they participate more activity in determining the characteristics of the exercise. These factors lead to the improvement of learning and better performance.  https://jsmdl.ut.ac.ir/article_93261_1305ac80840319c2e851b94b5df5619f.pdf