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Showing 4 results for Amiri
Effect of Soccer Specific Functional Fatigue On hip and knee Joints Kinematics In professional players during Landing
Mr Saeid Eimani Zadeh, Dr Mansoor Sahebzamani, Dr Mohamad Taghi Amiri Khorasani,
Volume 13, Issue 10 (10-2015)
Abstract

The purpose of this study was to investigate the effect of soccer specific functional fatigue on hip and knee
joints angles during landing in professional players.15 soccer players with at least 2 years experience in
Kerman soccer clubs were selected randomly. To evaluate the lower extremity kinematics following
jumping and soccer specific- heading, three cameras (with50Hz) were used. To cause fatigue in subjects,
specific functional protocol similar to specific bangsbo soccer was used and Quantic sport v21 soft ware
was administrated for kinematic analysis of the recorded films. To statistical analyzing of data, descriptive
statistical methods, and paired-t test were administrated at α=0.05.Finding revealed that hip and knee
angles in sagittal and frontal plane in landing is influenced by functional fatigue. This results has been
reducing knee and hip flexion angles and increased varus in knee joint. Results demonstrated a more
erect landing posture due to a decrease in hip and knee flexion angles in the post fatigue condition.
However, functional fatigue significantly decrease lower extremity control ability in male soccer player
during landing.


The effect of non-stability surface of support leg on the instep kicking kinematics in soccer players
Mr Mohammad Ali Naseri Rouhani, Dr Mohammad Taghi Amiri Khorasani, Dr Mohammad Reza Amir Seifaldini,
Volume 14, Issue 11 (4-2016)
Abstract

Objective: The aim of this study was to investigate the effect of non- stability surface of support leg on the instep kicking kinematics in soccer players. Materials and Methods: 30 male soccer players participated in this study. After the measurement of static and dynamic balance tests by the Biodex System, 20 players were selected who were at a desired level of the balance. Data were recorded using the three- dimensional motion analysis system with 6 optoelectronic cameras (200 HZ). The kinematic parameters in three critical moments of kicking (Forward swing of hip, Contact to ball, Follow through) were compared by using repeated measures of variance and independent t- test (0/05). Results: The results showed that the values of maximum angular velocity and displacement of hip and velocity of ball at the kicking over stability surface was significantly higher from the kicking over non- stability surface. Conclusion: These results indicate that the kicking over non- stability surface causes the lower of kinematic parameters in the more of the kicking skill phases and the movement prime velocity of ball


The Effect of One Period Core Stability Eexercise with and without Kinesio Taping on Biomechanical Effective Factors in Lower Cross Syndrome on Female
Nafise-Sadat Shahamiri, Dr Mohammad-Ali Soleiman-Fallah, Dr Foad Feizolahi,
Volume 20, Issue 24 (3-2023)
Abstract
The aim of this study is the effect of one period core stability exercise with and without kinesio taping on biomechanical effective factors in lower cross syndrome on female. 36 female between 30 to 40 were randomly divided in to 3 groups (control, with taping and without taping).  each group consist 12 participant. To measure Pelvic slope, Hip and Knee ROM, Isometric strength of flexors and extensors, Abdominal muscle endurance, Flexibility of spine extensors, Endurance of core muscles, respectively was used Inclinometer, Goniometer, Dynamometer, Body flection test, Body straightening test and Planck test to the side. To evaluate research hypotheses, if there is a significant difference between them we was used analysis of covariance test and multiple comparison in averages with post hoc bonferroni test. The result of the survey indicate that  difference between taping and control groups were significant in pelvic slope, hamstring and rectus femoris flexibility, knee and hip flexors muscle strength )p≥0/05(. Difference between without taping and control groups were significant in pelvic slope, rectus femoris and spine extensors flexibility (p≥0/05(. Difference between with and with¬out taping groups were significant in hamstring and iliopsoas flexibility, knee flexors, hip flexors, extensors, adductors strength, core muscles endurance )p≥0/05(. The results show that training with taping has an effective role on reducing lower cross syndrome. So it is suggested that taping can be used as an non-aggressive and low-cost method at the same time with exercise.

Validity And Relieability Of Persian Version Of The Athlete Fear Avoidance Questionnaire (AFAQ)
Maryam Kavyani, Hadi Babarahimi, Mahtab Amiri,
Volume 23, Issue 29 (7-2025)
Abstract
Introudution and aim:This study aimed to determine the validity and reliability of the Athlete Fear Avoidance Questionnaire (AFAQ). Methods:To achieve this, 120 athletes with different skill levels in various fields completed the AFAQ, along with the Kinesiophobia Questionnaire, the Pain Catastrophizing Scale, and the Sports Injury Appraisal Scale. The AFAQ was confirmed by using the translation-back translation method, face validity, and translation accuracy. Construct validity, internal consistency, and temporal reliability were checked using Cronbach's alpha index, exploratory and confirmatory factor analysis, Pearson correlation coefficient, and intraclass correlation coefficient. Results: The results showed that the one-factor model of the athletes' fear-avoidance questionnaire had a poor fit. Therefore, after conducting an exploratory factor analysis and identifying three factors in these questionnaires, the confirmatory factor analysis model also fitted the data well with this three-factor model. The CFI index was 0.96, the TLI index was 0.94, and the RMSE index was 0.05. The chi-square ratio to the degree of freedom (X2/DF) was 1.39. The internal consistency of the questionnaire was also confirmed.
Conclusion: Therefore, the Persian version of the AFAQ has three factors and includes ten questions and three catastrophic constructs (items 1, 5, 8), fear of movement (4, 6, 7), and fear-avoidance beliefs (items 2, 3, 9, 10). This was confirmed in the community of Iranian athletes

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