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Effect of 8 weeks of ankle-specific balance training on the balance and knee and ankle proprioception of adolescent volleyball players
H Arazzadeh, A.a Norasteh,
Volume 17, Issue 17 (4-2019)
Abstract
Although to improve balance and grasp the proprioception, recommended balance exercises, but there is not clear mechanism for the effectiveness of equilibrium training on healthy subjects. Suitable interaction of varios system of body and environment are necessary to maintain of the balance. Balance exercise is prescribed to improve balance and proprioception. There is not clear mechanism about the effectiveness of these exercise on healthy subjects. So The purpose of this study was to the Effect of 8 weeks of ankle-specific balance training on the balance and knee and ankle proprioception of adolescent volleyball players. the statistical sample of this study was 30 adolescent volleyball players in the league Golestan Which were selected as accessible and were randomly assigned into experimental and control groups. The experimental group performed 8 weeks and 3 sessions per week of ankle-specific balance. The results showed that there was a significant difference in the mean of balance and errors in reconstructing the angles of knee and ankle after exercise in the experimental group, while in the control group it was not significant. Results of this study showed that Balance Training can improve balance and proprioception in the knee and the ankle.

The Effect Of Eight Weeks Of Feedback Training Program On The Biomechanical Variables Of Athletes With Selected Motor Control Defects In Jump Landing Tasks
Mohadeseh Ashrafizadeh, Ali Asghar Norasteh,
Volume 22, Issue 28 (12-2024)
Abstract
Jumping motor tasks in people with motor control defects are probably associated with incomplete movement patterns, which can be related to non-collision injuries of the lower limbs. Therefore, the aim of the present study is to investigate the eight-week training program of feedback on the biomechanical variables of athletes with selected motor control defects in landing jump tasks.
The present study is a randomized clinical trial study before and after the intervention. 34 male recreational athletes with movement control defects were selected based on the study criteria and then randomly assigned to control and feedback groups. To analyze the data, two-way analysis of variance and Bonferroni statistical tests were used for each movement task at a significance level of P < 0.05.
The results of the study indicated an increase in the electrical activity of the VM and GM muscles in different phases of jumping in the feedback group. Also, the feedback group showed a decrease in knee valgus angle in the frontal plane (P < 0.05).
The results of the present study showed that feedback can be used to correct incomplete movement patterns in jump-landing tasks.

The Effect Of Feedback Interventions On Lower Limb Mechanics And Performance In people With Motor Control Deficits In Jump-Landing Movements: a Systematic Review
Mohadeseh Ashrafizadeh, Ali Asghar Norasteh,
Volume 23, Issue 30 (1-2026)
Abstract
Introduction & Aim: Motor control deficits such as dynamic knee valgus and quadriceps dominance are recognized as key modifiable risk factors for lower-limb injuries. Feedback-based training has been proposed as an effective strategy to correct high-risk biomechanics. This systematic review aimed to investigate the effects of feedback interventions on lower-limb mechanics and performance during jump-landing movements
Methods: A comprehensive search was conducted in international databases (PubMed, Scopus, Science Direct, Google Scholar) and national databases (Magiran, Irandoc) from 2000 to 2023. Studies were included if they examined the effects of any form of feedback on healthy individuals with lower-limb motor control deficits. From an initial 540 retrieved articles, 20 studies met the inclusion criteria after screening and full-text review.
Results: Most studies reported that feedback, particularly external or real-time feedback, led to increased flexion angles of the hip and knee in the sagittal plane during jump-landing. The findings regarding frontal plane mechanics were inconsistent: some studies showed a reduction in knee valgus angle, while others reported no significant change. A majority confirmed a reduction in peak vertical ground reaction force following feedback. However, limited studies assessed performance outcomes such as jump height or reactive strength index, and their findings were contradictory.
Conclusion: Feedback interventions appear effective in improving biomechanical risk factors related to lower-limb injury during jump-landing tasks; however, their impact on functional performance remains unclear. Further research is required to determine long-term retention and performance outcomes.

 
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