Showing 3 results for Nezakat Alhosseini
Hamid Salehi, Adnan Ghazanfari, Ahmad Reza Movahedi, Maryam Nezakat Alhosseini,
Volume 1, Issue 2 (12-2011)
Abstract
In the present investigation we determined the time course of attention demands during the jumping service in volleyball by the dual-task paradigm. Fourteen voluntary junior elite volleyball players performed 60 jumping serve. Jumping-serve performance (JSP) as primary task and verbal reaction time (RT) to an auditory stimulus that was administered in four probe positions (PP), as secondary task was measured. Repeated measures analyze of variance (ANOVA) showed no significant effect of the PP on JPS, indicates allocating the most attentional weight to the JSP. In second analyze, effect of PP on RT was significant, so that all probes RT were significantly higher than the base line RT, indicates attention demanding of the JSP. Results also showed that pre-shot in run-up (PP1) and after the ball strike (PP4) had the greatest attentional demands respectively while per-jump stepping ahead (PP2) and just pre-striking the ball (PP3) had respectively the lowest needs of attention. The results indicate that attention follows a non-linear pattern, in the JSP.
Maryam Nezakat Alhosseini, Abbas Bahram, Ahmad Farrokhi,
Volume 2, Issue 4 (12-2012)
Abstract
The purpose of this study was to examine the effect of self-control feedback on the learningof generalized motor program and parameters during physical and observational practice. Participants (n=90) were randomly assigned to physical and observational practice (self-control, yoked and instructor KR) groups. They practiced a sequential timing task. The task required participants to press four keys (2, 6, 8, and 4).They performed 72 trials during the acquisition phase and 12 in retention and transfer phase. The analyses demonstrated that during the acquisition phase, relative timing errors were lower for the self-control and instructor groups. During the retention and transfer phase, relative timing errors were lower for the self-control groups and instructor groups. This might explain self-control feedback and physical practice develop the generalized motor program but not parameter learning and support the theoretical separation of GMP and parameter processes.
Zahra Nezakat Alhosseini, Saleh Rafiee, Sadegh Nasri,
Volume 13, Issue 26 (12-2023)
Abstract
The aim of this study was to investigate the effect of observational practice on anticipation and visual search behavior in handball players in handball defense positions. The participants were 23 male handball players aged 16-19 years, who were members of Isfahan national youth and Pishgaman team. The players viewed clips of handball defense positions using eye-tracking glasses. They verbally expressed their anticipation about the outcome of the ball position during the pre-test. The players were divided into two groups: gaze behavior, which was observed (observation of output clips of eye-tracking glasses) and observation group, which observed only handball clips. Then the two groups were retested after 10 sessions of 45 minutes. The results of repeated measures analysis of variance and Muchly test with sphiricity assumed illustrated that the anticipation accuracy and visual search behavior of the gaze behavior group in the post-test were significantly better than the observation group. Defending handball players in the 3×3 position compared to the other two positions (2 × 2, 1 × 1), focused on the background and kinematics of the attacking player to anticipate and identify the attacking player pattern.
