Hadi Akbari | University of Zabol (original) (raw)

Papers by Hadi Akbari

BMC Sports Science, Medicine and Rehabilitation

Background Gender differences in muscle activity during landing have been proposed as a possible ... more Background Gender differences in muscle activity during landing have been proposed as a possible contributing factor to the greater incidence of anterior cruciate ligament injuries in women. Conflicting results among a few studies in this regard makes it impossible to reach correct conclusions. Objectives The aim of this study was systematic review and the meta-analysis of previous studies which have compared the electromyographic activity of lower limb muscles in gluteus muscles (maximus and medius), quadriceps (rectus femoris, vastus medialis and lateralis), hamstrings (biceps femoris and semimembranosus), and gastrocnemius in men and women in jump–landing task. Methods A systematic search of the PubMed, SCOPUS, Science Direct databases was performed for eligible articles in October 2020. Cross-sectional studies that compared the muscle activity of male and female athletes without a history of previous injury in the jump–landing task were included. Unisex and non-athlete's stu...

Montenegrin Journal of Sports Science and Medicine, 2018

turkish journal of sport and exercise, 2016

Normal curvature of the spine might be changed as a result of its non-fixed feature. The aim of t... more Normal curvature of the spine might be changed as a result of its non-fixed feature. The aim of this study was to investigate the relationship between height, weight and body mass index (BMI) with curvature of the spine kyphosis and lordosis in 12-15year-old male adolescents of Tehran. This was a correlational study in which 97 accessible healthy boy students from Tehran region 2 (13.8 ± 0.8 years old) participate were selected. After measuring height (157.4 ± 8.6 cm), weight (52.9 ± 11.9 kg) and calculating BMI (21.2 ± 3.9 kg/m 2 ), the spinal mouse was used to spinal assessment. To investigate the relationship between study variables Pearson correlation coefficient was used. The results of Pearson correlation coefficient showed there was no statistically significant relationship between study variables including height and kyphosis curvature (r= -0.047, p= 0.651), height and lordosis curvature (r= -0.026, r= 0.800), weight and kyphosis curvature (r= 0.015, p= 0.883), weight and lo...

Introduction: Anterior cruciate ligament (ACL) injuries are common in sports. Most ACL injuries a... more Introduction: Anterior cruciate ligament (ACL) injuries are common in sports. Most ACL injuries are noncontact in nature and frequently occur in certain athletic tasks and female athletes have higher risk for ACL injuries than their male counterparts. There is little convincing evidence, theoretical or experimental to the association between static factors and the risk of noncontact ACL injuries. Materials and Methods: 27 healthy female students from department of physical education and sport sciences of Kharazmi University with the mean and standard deviation of age (22 ± 1.73 years), weight (69.34 ± 7.24 kg) and height (169.08 ± 5.34 cm) participated in this study. Participants divided into 3 groups (normal, pronated and supinated foot) based on navicular drop test. Afterward Participants asked to land on the center of force plate from a box with the height of 30 cm that placed at the 15 cm from the edge of force plate. Ground reaction forces data collected through Force Platform....

Journal of Sport Rehabilitation

Context:There is no evidence regarding the effect of the FIFA 11+ on landing kinematics in male s... more Context:There is no evidence regarding the effect of the FIFA 11+ on landing kinematics in male soccer players and also few studies exist regarding the evaluating progress of interventions based on the initial biomechanical profile.Objective:The aim of this study was to investigate the effect of the FIFA 11+ program on landing patterns in soccer players classified as at low or high risk for non-contact anterior cruciate ligament (ACL) injuries.Design:Randomized controlled trial.Setting:Field-based functional movement screening performed at the soccer field.Participants:Twenty-four elite male youth soccer players participated in this study.Intervention:The intervention group performed the FIFA 11+ program 3 times per week for 8 weeks, whereas the control group performed their regular warm-up program.Main Outcome Measures:Before and after the intervention, all participants were assessed for landing mechanics using the landing error scoring system (LESS). Pre-training LESS scores were ...

Although various treatment methods have been applied to low back pain, there is no general consen... more Although various treatment methods have been applied to low back pain, there is no general consensus on the most effective treatment. The aim of this study was to compare of three rehabilitation protocol: core training, core training plus electrotherapy and electrotherapy only on pain and performance in women patients with non-specific chronic low back pain. Fortyfive females with the mean and standard deviation of age (42.77 ± 6.51 years), weight (65.87± 7.94 kg) and height (159.02 ± 6.61 cm) with chronic low back pain were participated in the study. They were randomly divided into three groups: Core training (n = 15), Core training plus electrotherapy (n = 15) and electrotherapy only (n = 15). Before and after the intervention, visual analogue scale (VAS) and the oswestry disability index were used to assess pain intensity and disability, respectively. The Paired T-Test and one-way ANOVA test findings show that intensity pain variable was significantly decreased in three protocols (P<0.01), while no significant change was found in the disability variable in the electrotherapy protocol (P>0.05). When three groups compared, level of pain was no found to be statistically significant (P>0.05) but functional disability was found to be statistically significant (P<0.05). The findings of this study revealed that core stability training may decrease the pain intensity and disability.

ABSTRACT Since foot has an important role in force absorption and preventing injuries for the oth... more ABSTRACT Since foot has an important role in force absorption and preventing injuries for the other body segments, every changes on the structure can probably accelerate prone of injury at the others body limbs. Many studies revealed that the most of the knee injuries are in sports have occurred during cutting and decelerating maneuvers. Anterior cruciate ligament injury, often is the result of sever forces that cause this ligament strains to disruption level. The objective of this study was to verify the relationship between pronated and supinated feet with ACL injury in single-leg drop landing. using navicular drop test, the subjects divided into three groups, each group contains 15 participants. Subjects lands from a box with the height of 30 cm, with dominant leg which is barefoot on forceplate. For analyzing the data, One-way ANOVA and Tukey test in significant level of α≤0.05 was used. Significant differences observed between pronated feet group and normal feet group(≥ α 0.05, sig=0.04) in peak ground reaction force in anterior-posterior direction. The mean of peak ground reaction force in anterior-posterior direction in pronated feet group was greater than the others groups. The results shown that hyperpronation of feet probably is a risk factor in ACL non-contact injuries. LONG ABSTRACT Introduction and aim of the study: Over the past two decades increased female participation in sport has highlighted sex discrepancies in injuries to the anterior cruciate ligament(ACL) of the knee. Female athletes injure their ACLs at rates from two to eight times greater than male athletes during sports that involve cutting, stopping, and landing(Agel, Arendt, & Bershadsky,2005). ACL injuries to high school and college female athletes

The aim of this study was to compare the peak Vertical Ground Reaction Forces (VGRF) between supi... more The aim of this study was to compare the peak Vertical Ground Reaction Forces (VGRF) between supinated, pronated, and normal feet during single leg drop landing. Thirty healthy male students from physical education & sport sciences department [mass 74.32 ± 6.50 kg, height 176.20 ± 5.43 cm, age 23 ± 2 years] participated in this study and assigned to one of three groups by navicular drop test (10 per groups) [pronated (10mm), neutral (5-9mm), or supinated (4mm)]. Participants performed single leg drop-landing on the force plate from the box with height of 0.30 m. Peak VGRF were calculated using GRF data. There were no significant differences in Peak VGRF between three groups (F2, 27 = 0.510, P >0.05). These results suggest that foot types are not associated with specific lower extremity kinetics. Not differences in these parameters may be resulting of existence another factors influencing VGRF.

Journal of Biomechanics, 2007

... Dynamic Posture Control Hadi Akbari 1 , Fariborz Hovanloo 2 , Ali Reza Rabiee Zade 1 ... Abst... more ... Dynamic Posture Control Hadi Akbari 1 , Fariborz Hovanloo 2 , Ali Reza Rabiee Zade 1 ... Abstract: the purpose of this study was to examine the relationship between spinal column malalignment with dynamic posture control(measured using star excursion balance test). ...

Journal of Biomechanics, 2007

Although various treatment methods have been applied to low back pain, there is no general consen... more Although various treatment methods have been applied to low back pain, there is no general consensus on the most effective treatment. The aim of this study was to compare of three rehabilitation protocol: core training, core training plus electrotherapy and electrotherapy only on pain and performance in women patients with non-specific chronic low back pain. Forty- five females with the mean and standard deviation of age (42.77 ± 6.51 years), weight (65.87± 7.94 kg) and height (159.02 ± 6.61 cm) with chronic low back pain were participated in the study. They were randomly divided into three groups: Core training (n = 15), Core training plus electrotherapy (n = 15) and electrotherapy only (n = 15). Before and after the intervention, visual analogue scale (VAS) and the oswestry disability index were used to assess pain intensity and disability, respectively. The Paired T-Test and one-way ANOVA test findings show that intensity pain variable was significantly decreased in three protoco...

Montenegrin Sports Academy, 2018

Despite the success of the FIFA 11+ programme in preventing injury, convincing coaches and player... more Despite the success of the FIFA 11+ programme in preventing injury, convincing coaches and players to do these exercises is diffi cult only in order to prevent injury, unless the programme can be shown to have a positive and direct impact on the performance. Th is study aims to investigate the eff ect of the FIFA 11+ programme on vertical jump performance in male elite-youth soccer players. Twenty-four male soccer players (mean ± SD: age = 16.79 ± 1.18 years, height = 174.17 ± 8.12 cm, mass = 62.45 ± 10.01 kg, experience = 6.96 ± 1.26 years) participated in this study and were randomly divided equally into two groups, FIFA 11+ and control. Th e experimental group performed the FIFA 11+ programme three times per week for eight weeks whereas the control group just performed their regular warm-up programme. Th e mixed-repeated measures ANOVA showed that there was a signifi cant improvement in the vertical jump performance between groups in post-test (P=0.002) while no signifi cant improvement was found between groups aft er 1-month of stopping the FIFA 11+ programme (P=0.076). It can be concluded that performing the eight-week FIFA 11+ programme can enhance the jump height in male elite youth soccer players. It seems that the FIFA 11+ programme could be incorporated into regular soccer practice as a warm-up programme instead of a conventional warm-up programme. However, due to the failure to maintain the long-term eff ectiveness of the FIFA 11+ programme on the jump height of soccer players, the continuation of performing this programme is necessary.

BMC Sports Science, Medicine and Rehabilitation

Montenegrin Journal of Sports Science and Medicine, 2018

turkish journal of sport and exercise, 2016

Journal of Sport Rehabilitation

Journal of Biomechanics, 2007

Although various treatment methods have been applied to low back pain, there is no general consen... more Although various treatment methods have been applied to low back pain, there is no general consensus on the most effective treatment. The aim of this study was to compare of three rehabilitation protocol: core training, core training plus electrotherapy and electrotherapy only on pain and performance in women patients with non-specific chronic low back pain. Forty- five females with the mean and standard deviation of age (42.77 ± 6.51 years), weight (65.87± 7.94 kg) and height (159.02 ± 6.61 cm) with chronic low back pain were participated in the study. They were randomly divided into three groups: Core training (n = 15), Core training plus electrotherapy (n = 15) and electrotherapy only (n = 15). Before and after the intervention, visual analogue scale (VAS) and the oswestry disability index were used to assess pain intensity and disability, respectively. The Paired T-Test and one-way ANOVA test findings show that intensity pain variable was significantly decreased in three protoco...

Montenegrin Sports Academy, 2018