Farnaz Torabi; Shabnam Delkash
Abstract
This study investigated the effect of virtual reality exercises on motor-perceptual development performance of taekwondo girls. The research was quasi-experimental with a pretest-posttest design with a control group. Due to the availability of sample selection, the statistical population of the present ...
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This study investigated the effect of virtual reality exercises on motor-perceptual development performance of taekwondo girls. The research was quasi-experimental with a pretest-posttest design with a control group. Due to the availability of sample selection, the statistical population of the present study, including 24 taekwondo practitioners (with white, yellow and green belt), was selected, who are completely familiar with the basics of taekwondo, with family satisfaction and cardiovascular endurance tests and a relatively good level of sports. The experimental protocol consisted conducted 12 sessions of 30 minutes 3 days per week for 4-weeks and during this period they did not do any training, even recreationally. The MANOVA test was performed for data analysis. Before analysis of variance, the necessary assumptions such as the normality of the distribution of dependent variables, homogeneity of variance, variables of regression line slope homogeneity and regression slope were examined. Both groups maintained their regular taekwondo training, which was the same. The results showed a significant difference between the experimental and control groups (p≤0/05). Virtual reality exercises increase the perceptual- motor performance of all components have a significant effect on agility, endurance, strength, balance flexibility and perception of taekwondo practitioners compared to the control group (p≤0/05). Therefore, it is suggested to be used in the training program taekwondo athletes.
Farnaz Torabi; Masome Momtazi
Abstract
The aim of this study was to compare the effect of linear and nonlinear training on the coordination pattern of drop forehand badminton skills of adolescent girls in Tehran. The research method was quasi-experimental and was performed as pretest and posttest. The statistical population of the present ...
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The aim of this study was to compare the effect of linear and nonlinear training on the coordination pattern of drop forehand badminton skills of adolescent girls in Tehran. The research method was quasi-experimental and was performed as pretest and posttest. The statistical population of the present study consisted of all adolescent girls aged 10 to 12 years in Shiroodi Club, District 7 of Tehran. The statistical sample of this study consisted of 30 beginner girls in badminton who had less than 3 months of experience in badminton, who were selected by purposive sampling and randomly divided into two groups of linear and nonlinear training. Thirty participants were trained in drop forehand skills using linear and nonlinear training methods. The linear method was designed and implemented based on traditional and conventional methods and in contrast to the nonlinear method derived from ecological dynamics using task constraints (rules related to activity and equipment). For data analysis, descriptive (mean and standard deviation) and inferential (paired t-test and analysis of covariance) statistical methods were used on SPSS software version 22. The results of the present study showed that the two groups had a significant difference in the pattern of coordination and accuracy of drop forehand skills and the nonlinear training group had better performance than the linear group (p <0.05). The results of the present study showed that nonlinear training is a good method to improve the coordination patterns of drop forehand badminton skills in adolescents.
