جستجوی مقالات مرتبط با کلیدواژه « شوت جفت بسکتبال » در نشریات گروه « تربیت بدنی »

The purpose of this study was to investigate quiet eye duration and accuracy of performance of skilled and less skilled basketball players in successful and unsuccessful jump shots in the star-drill. Participants were skilled and less-skilled basketball players aged 20-29 years old. In order to record and analyze the data was used from the SMI Eye Tracker, I view ETG 2.7 and be gaze 3.7 software, the motion analysis system with six infrared cameras and Cortex software, as well as the accuracy of the performance of the groups was evaluated through 8 value check list. T-test and mixed ANOVA (two way) was used to statistical analysis and. The level of significant was set at 0.05. The result show that skilled players had better accuracy in jump shots than less skilled players. They had longer quite eye duration than less skilled players and also players showed that longer quiet eye duration in hit than miss. Therefore, it can be concluded that the effect of quite eye duration and its effect on the performance is not limited to task and situation.

This study has investigated the role of movement sonification (conversion of the human kinetic or kinematic characteristics into auditory patterns) along with the visual pattern in reproduction and learning the spatial characteristics of the motion pattern. 30 subjects were randomly divided three groups which are visual, visual-auditory (one channel) and visual-auditory (two channel). Visual groups watched the pattern of skilled basketball player and other groups watched this pattern and simultaneously heard elbow angular velocity (one channel groups) and elbow and wrist angular velocity (two channel groups) as sonification. At the first stage, the pattern was presented to subjects five times and they performed the pattern after watching it (reproduction). Then, the groups participated in the stages of pre-test, acquisition (4 sessions, 160 tries) and retention (after 48 hours). In all stages, the angular velocity pattern and angular distance pattern of the elbow and wrist joints of the individuals coincided to the pattern of the skilled performer. After that, by calculating the root mean square error, the inconsistency was considered as the spatial error of angular distance and spatial error of angular velocity. Furthermore, the maximum range error of flexion was calculated. The results showed that in reproduction stage (in the spatial error of angular velocity) and in both acquisition and retention test (considering all variables) there was significant difference between groups in favor of audio-visual group. These results emphasize the salient role of motor-auditory kinematics on spatial variables of motion patterns and the final performance of the subjects.