Mehran Delfani; Mahtab Arabi
Abstract
tDCS is a neuromodulatory technique that induces a low intensity direct current into brain cells that stimulates or inhibits spontaneous neural activity. In recent decades, electrical stimulation has been used as an effective method to improve balance in different individuals. The aim of this study was ...
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tDCS is a neuromodulatory technique that induces a low intensity direct current into brain cells that stimulates or inhibits spontaneous neural activity. In recent decades, electrical stimulation has been used as an effective method to improve balance in different individuals. The aim of this study was to investigate the improvement of postural control kinetic parameters in martial art athletes after applying tDCS. Participants were 20 male martial art athletes aged between 18 and 25. 10 subjects in the experimental group were exposed to electrical stimulation for 1-3 mA for 15-20 minutes and 10 subjects in the control group were exposed to sham tDCS. Then, both groups were evaluated by SOT postural control to exposed variables in sensory organizing test. Data were analyzed using covariance analysis test to differentiate the effect of training interventions on postural control of the two groups (P<0.05). The findings showed that tDCS had a significant effect on the postural control of male martial art athletes in 3 values of equilibrium: the exclusion of information in proprioceptive systems, the exclusion of information in proprioceptive and visual systems and the provision of incorrect visual inputs. Finally, this study showed that tDCS could improve and enhance postural control kinetic parameters in martial art athletes
mahtab arabi; Abdollah Ghasemi; Seyed Mohammad Kazem Vaez Mousavi
Abstract
The aim of this study was to compare observational models in learning motor task of receiving a volleyball ball and motor-cognitive task of juggling with 3 balls. The participants were 80 female students aged between 19 and 25. 40 subjects participated in each task. Participants were divided into ...
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The aim of this study was to compare observational models in learning motor task of receiving a volleyball ball and motor-cognitive task of juggling with 3 balls. The participants were 80 female students aged between 19 and 25. 40 subjects participated in each task. Participants were divided into 4 groups: novice model observation, expert, mixed and physical practice. All observational groups watched their own model via video tapes. In this study, some acquisition phases, retention and transfer tests were carried out in all two tasks. In acquisition phase, data were analyzed with ANOVA with repeated measures and in retention and transfer tests one-way ANOVA test and proper post hoc tests were used (P<0.05). In the acquisition phase, observation of expert-novice model in the motor task was better than the other groups but this predominance was not significant. But in the retention and transfer tests, observation of this model had a significant predominance. In the cognitive-motor task, the observation of novice model was better than the other groups during the acquisition phase, retention and transfer tests but this predominance was not significant in the transfer test. Finally,based on the results of the present study, it is suggested that various modeling methods should be used to learn different tasks.
