Cross-transfer of physical fitness factors considering laterality of each brain hemispheres
Poster Presentation XML
Authors
1Shahid Rajaei Teacher Training University
2آموزش و پرورش
3Azad university
Abstract
Introduction: Cross-transfer is ability to perform skills by acquiring experiences when the person is practicing with the opposite hand. Evidence suggests that the direction of this transfer is different depending on physical fitness, which points to the role of each brain hemisphere in motor control. But in order to prove this hypothesis, it is necessary to consider the transfer of physical fitness factors direction in right-handed and left-handed individuals.
Methodology: Methodology of study was as pre-posttest. 80 children were assigned into 8 groups (4 groups were right handed and 4 groups were left handed) and began to strength and velocity training with their dominant and non-dominant hands. After a pretest with both hands, participants participated in a 12 session course of strength and velocity training. The training period lasting 4 weeks, and per week was consistent of 3 sessions. After period of practice, participants participated in posttest. The data was analyzed by tow-way and one-way ANOVA in SPSS 18.
Results: The results showed that the main effect of type of dominant hand was significant, but the main effect of type of training hand was not significant. Also, the amount of strength transfer from dominant hand to non-dominant hand was significantly greater in left handed than right handed (P<0.05). Although in “Velocity” variable, there was no significant difference from left hand to right and Vic versa.
Discussion: Strength exercises with the left hand can strengthen the mechanisms and neural connections more and lead to greater transmission to the opposite side. Therefore, it suggests using of both hands specially left hand to improve of strength.
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