درخت حوزه‌های تخصصی

Present research is considered applied-developmental in its objective and qualitative concerning the research nature of data, and the research design was the interpretative structural model (ISM). In order to gather data, semi-structured in-depth interviews with experts in the consumer behavior domain, selected by theoretical sampling, have been utilized. The statistical population includes all sports managers, sports specialists, and fans, and sampling continued until theoretical sufficiency was achieved. After research completion, results were sent to two participants, and their opinions were approved by identifying indices related to football fans' superstitious behavior to draw the interpretative- structural model of factors influencing football fans' superstitious behavior. The result indicated the level of dependence and influence power of each index according to which individual characteristics and environmental conditions in the region under the influence include inculcation index in the autonomous region (independent) and indices of relief, the transmission of evil, coercion, and deterrence in the dependent region.

Background: Perturbation training which is in the context of volleyball routine practice is a type of neuromuscular exercises that is useful in overhead sports; leads to contraction responses through unpredictable perturbation. Aim : The present study aims to investigate the effects of perturbation training on volleyball players strength proprioception and performance. Materials and Methods: Twenty-four volunteer male volleyball players (age: 24.42±2.15 years; height: 181.46±3.00m; Weight: 73.87±3.77kg; BMI: 22.43±0.80) were recruited and randomly assigned into perturbation and control groups, Before the intervention, a set of isokinetic dynamometry was carried out to measure shoulder proprioception as well as rotator cuff muscles strength, what is more, the upper extremity performance was evaluated using Y-Balance Test. For a course of 6 weeks, players of the perturbation group implemented perturbation trainings, 3 times weekly while the control group performed its routine training. The dynamometry was repeated at the end of training period to compare trainings outcome. The Repeated Measures ANOVA statistic was used to find differences between groups. Results: A significant difference in shoulder proprioception, as well as the YBT-UQ test, was observed between the groups; Also, the ANOVA showed a significant difference ( P <0.05) in functional strength ratio followed by 6 weeks of perturbation training. Conclusion: Perturbation trainings might have benefit to volleyball players conditioning by improvement rotator cuff strength, shoulder proprioception and upper extremity performance. Given this adopting kind of training as a part of regular basic training for volleyball players is highly recommended.