mostafa zarei | Shahid Beheshti University (original) (raw)

Papers by mostafa zarei

Journal of Research in Rehabilitation Sciences, 2015

Introduction: Ankle sprains are most frequent injuries in soccer. Previous studies showed that FI... more Introduction: Ankle sprains are most frequent injuries in soccer. Previous studies showed that FIFA comprehensive warm up program 11+ reduce sport injuries but to date there is limited information on effectiveness of this program on prevention of ankle injuries. Thus, the aim of this randomized controlled Trial was to determine the effect of FIFA comprehensive warm-up program for the prevention of ankle injuries in male young soccer players. Materials and Methods: 980 male young soccer players from 35 teams participated in this study. Teams were randomly assigned to an intervention (n = 17 teams, 476 players) or a control group (n = 18 teams, 504 players). Teams in the intervention group performed the +11 at least twice a week as warm up prior training throughout the season. All participants of the control group continued their practice sessions as usual. All soccer-related injuries and player exposure to practice sessions and matches was registered prospectively by the coaches and ...

BMC Sports Science, Medicine and Rehabilitation

Background Wrestling is considered one of the oldest sports in the world. There is a high rate of... more Background Wrestling is considered one of the oldest sports in the world. There is a high rate of injuries in Wrestling. To prevent injuries, it is necessary to identify the risk factors. Despite the functional importance of strength in wrestling, few studies have investigated the relationship between isokinetic strength and the rate of injuries in the sport. Objectives The objective of the present study was to investigate the relationship between the isokinetic strength of elite wrestlers and the rate of injuries prospectively. Method A total of 72 young wrestlers with at least 2 years of experience in the Tehran Wrestling Premier League participated in this study. Before the start of the competition season, the isokinetic strength of flexor and extensor muscles of the knee and shoulder were measured at different velocities by an isokinetic dynamometer. The injuries and training hours of these wrestlers were then recorded for nine months. Results The study results showed no signifi...

Aims: The aim of this study was to investigate the prediction of injuries in Iranian soldiers wit... more Aims: The aim of this study was to investigate the prediction of injuries in Iranian soldiers with the Functional Movement Screening. Methods: All the subjects were evaluated before the beginning of the trainings. The FMS tests including the deep squat, hurdle step, in-line lunge, shoulder mobility, straight leg raise, trunk stability push-up and rotary stability were used for the subjects’ evaluation. They were monitored for musculoskeletal injuries resulting through a 7-month basic combat training period. Results: At least one musculoskeletal injury had been suffered by 42% of the cadets during the observation period. Logistic regression modeling indicated that the subjects who had a lower FMS score demonstrated higher injury risks (p=0.001). Also, considering the ROC curve and the Yourdon's index, the score of 14 was considered as a cut-off point. Therefore cadets whom FMS scores were lower than 14, were considered 5.6 time higher than the other soldiers exposed to lower extr...

Scientific Journal of Rehabilitation Medicine, 2021

Poster Presentations, 2021

Research in Sports Medicine

The purpose of this study was to examine the effects of an eight-week 11 + S programme on isokine... more The purpose of this study was to examine the effects of an eight-week 11 + S programme on isokinetic shoulder strength in young male volleyball players. Twenty-eight top-level young male volleyball players were recruited for this study. The players were randomly assigned into intervention (14 players) and control (14 players) groups. The intervention group performed the 11 + S as a warm-up before training at least three times a week for eight weeks. Dominant shoulder strength was measured using an isokinetic dynamometer at 60°/s and 180°/s. The functional deceleration ratio (FDR) was calculated as a functional strength profile. 20% FDR improvement after eight weeks of 11 + S at 180°/s (p = 0.003) were observed. No other statistically significant effects for shoulder strength improvement was observed (p > 0.05). Eight weeks of 11 + S warm-up programme improved the glenohumeral muscle imbalance by increasing the functional deceleration ratio (FDR) of shoulder muscles in young male volleyball players.

Research in Sport Medicine and Technology

The incidence of lower extremity injuries in young soccer players is high, but the risk factors f... more The incidence of lower extremity injuries in young soccer players is high, but the risk factors for injuries are unknown. Thus, the aim of this study was to investigate relationship between static lower extremity alignment and injuries in adolescent soccer players. Four teams (78 players) playing at Tehran Asia vision adolescence primer league (14-16 years old) participated in this study. Before entering the season Navicular drop, quadriceps angle, knee hyperextension, genu varum and body mass index was measured. Players were monitored for musculoskeletal injuries through a season (7-month period). overall injury rate was 8.7 injuries/1000 player-hours (95% CI=7.01-10.10). Logistic regression modeling indicated that Navicular drop in preferred foot (OR=4.5; p=0.001), Q angel in preferred leg (OR=2.77; p=0.048), and genu varum (OR=4.06; p=0.021) were all associated with injuries but no association was found in other parameters. Players had an approximately 4.5 times greater chance of suffering a lower extremity injury if they have Navicular drop greater than 1.5 centimeter and approximately 2.77 times greater chance of suffering injury if they have Q angel greater than 15.5 degrees. These findings show that multiple anatomic measures such as Navicular drop, genu varum and Q angle can predict soccer players' injuries. Results of this study are valuable for coaches and players for injury prevention.

2 Abstract: The risk of injury in soccer is considerable. The purpose of this study was to evalua... more 2 Abstract: The risk of injury in soccer is considerable. The purpose of this study was to evaluate the effect of soccer players' positional role in Iranian premier league on sport injury rates. Videotapes of 125 out of 240 matches of Iranian soccer premier league during the 2006-07 seasons were selected and analyzed by video analysis system and injury information and positional roles of injured players were recorded. 306 injuries occurred in these 125 matches. Midfielders were the most frequently injured players (P<0.05); than others. Strikers (88.1) and midfielders (72.65) were more prone to injuries in the offensive phase, whereas defenders (86.15) and goalkeepers (91.8) were more susceptible when defending. Most injury mechanisms were classified as being contact (86.1%). The results showed that the most frequent injuries, mechanism of injury and anatomical location of an injury were different in different positions. This information helps players, coaches and physicians t...

BMC Sports Science, Medicine and Rehabilitation, 2021

Background The “FIFA 11 + Shoulder” programme has been reported to reduce the incidence of upper ... more Background The “FIFA 11 + Shoulder” programme has been reported to reduce the incidence of upper extremity injuries among soccer goalkeepers. It has also been recommended for overhead sports. The purpose of this study was therefore to investigate the effect of an 8-week “FIFA 11 + shoulder” (11 + S) programme on shoulder joint position sense (JPS), threshold to detect passive motion (TTDPM) and upper quarter Y Balance Test in young male volleyball players. Methods Thirty-two healthy young elite male volleyball players (17.49 ± 1.47 years) participated in this quasi-experimental study. Participants, recruited from two clubs participating in Iranian premier league, were randomly assigned into two groups; (1) the intervention group who performed the “FIFA 11 + shoulder” programme as their warm up protocol, three times per week, and (2) the control group who kept their routine warm up protocol meanwhile. Proprioception tests including JPS and TTDPM of internal and external rotator muscl...

Journal of Science and Medicine in Sport

OBJECTIVE To assess the effectiveness of the 11+ Kids warm-up programme regarding injury reductio... more OBJECTIVE To assess the effectiveness of the 11+ Kids warm-up programme regarding injury reduction in male high-level children's football players. DESIGN Cluster-randomised controlled trial. METHOD Male youth football teams of Iran's high-level football schools were invited to participate. Inclusion criteria were: teams are competing in the highest league of their province; players are between 7 and 14 years old; regular training takes place at least twice per week. Teams were excluded if they used an injury prevention measure. Participating clubs were randomised to an intervention (INT, N = 20 teams) and a control group (CON, N = 22 teams), stratified by the number of teams and the age group. The groups were blinded against each other. The follow-up period was one season (9 months). INT replaced their warm-up by 11+ Kids. CON performed a standard warm-up programme. The primary outcome was the injury incidence density (injuries per 1000 h of football exposure), compared between groups by incidence rate ratios (RR). RESULTS In total, 64,047 h of football exposure of 962 players (INT = 443 players, 31,934 h of football, CON = 519 players, 32,113 h of football) were recorded. During the study, 90 (INT = 30; CON = 60) injuries occurred. The overall injury incidence density in INT was reduced by 50% compared to CON (RR 0.50; 95%-CI 0.32, 0.78). No injuries occurred during the execution of the intervention exercises. CONCLUSIONS The 11+ Kids reduces injuries in high-level children's football players, thus supporting player health and potentially performance and player development.

Journal of Sport and Exercise Physiology

Muscle strength is needed to perform many movements and skills in football such as speed decreasi... more Muscle strength is needed to perform many movements and skills in football such as speed decreasing, shooting, dribbling, rotating, and jumping. Several studies shown that lower limb muscle strength can increase the quality of exercise skills. But, few studies have compared the strength of players at different levels. Therefore, the present study intends to investigate the strength of the isokinetic and isometric knee muscles of the elite, sub-elite and amateur football players of Iran. Methods: The isokinetic strength of the knee muscles in 102 soccer players including 29 players of the national under-23 football team of Iran (elite), 29 players of 1 st division of under-23 football team of Iran (sub-elite) and 44 players of 2 nd division of under-23 football team of Tehran province (amateur) was measured for angular momentum of 60 and 180 degrees per second by the isokinetic Biodex. The isometric strength of flexor and extensor muscles of knee were measured at an angle of 60 degree. Results: The results of the ANOVA test showed that elite player had superior strength of flexor and extensor knee muscles in both momentum angles of 60 and 180 degrees per second and flexor/ extensor isokinetic strength ratio at 180 degrees per second speed than sub-elite and amateur players significantly. However, there was no significant difference in the ratio of flexor/ extensor isokinetic strength ratio at 60 degrees per second. Conclusions: Considering the results of the present study, it can be concluded that competition level affect the isokinetic and isometric strength of the knee muscles of young football players of Iran.

Journal of Proteome Research, 2013

Protein phosphorylation is an important mechanism of cellular signaling, and many proteins are pr... more Protein phosphorylation is an important mechanism of cellular signaling, and many proteins are precisely regulated through the interplay of stimulatory and inhibitory phosphorylation sites. Phosphoproteomics offers great opportunities to unravel this complex interplay, generating a mechanistic understanding of vital cellular processes. However, protein phosphorylation is substoichiometric and, in particular, peptides carrying multiple phosphorylation sites are extremely difficult to detect in a highly complex mixture of abundant nonphosphorylated peptides. Chromatographic methods are employed to reduce sample complexity and thereby significantly increase the number of phosphopeptide identifications. We previously demonstrated that combinatorial strong cation exchange-electrostatic repulsion-hydrophilic interaction chromatography yields a surplus in overall identifications of phosphopeptides compared with single chromatographic approaches. Here we present a simple and rapid strategy implemented as solid-phase extraction not requiring specific instrumentation such as off-line HPLC systems. It is inexpensive, adaptable for high and low amounts of starting material, and saves time by allowing multiplexed sample preparation without any carry-over problem.

Asian Journal of Sports Medicine, Dec 31, 2019

Background: High emotional intelligence (EI) seems to be preventive for unconventional sports beh... more Background: High emotional intelligence (EI) seems to be preventive for unconventional sports behavior within competitions leading prevention of sport injuries and also minimization of giving penalty cards. Objectives: The present study aimed to examine this relationship among Iranian Premier League footballers. Methods: This study was performed on Iranian professional soccer players participating in Premier League in 2014-2015 season. To assess emotional intelligence among athletes, the Schutte Self-Report Emotional Intelligence test (SSEIT) was employed. Sportrelated injuries were recorded by the physician of each team. Also, the reports of the number of yellow and red cards for each athlete as well as for all teams in two phases (middle and end of each season) was recorded by the Football League Organization were reviewed and recorded. The chi-square test and t-test were used for comparing the variables. The Pearson's correlation test and the multivariable regression model were also used for discovering association and relationship, respectively. P values of 0.05 or less were considered statistically significant. Results: Among different subscales of EI, only regulation of emotions was significantly different between injured and non-injured athletes (P = 0.04). Lower ability to regulate emotions was associated with higher risk for sport injuries (OR = 0.88, 95% CI: 0.79-0.98, P = 0.02). None of the subscales of EI was related to receiving yellow card, but utilizing emotions was adversely related to receiving red card. The association between utilizing emotions and receiving red card changed to insignificant after using the multivariable regression modeling. Conclusions: By regulating emotions, sport-related injuries can be preventable in soccer players. However, EI may not be helpful in reducing sport fines.

Journal of Rehabilitation Medicine (SJRM), 2021

Background and Aims One of the most common and dangerous injuries in sports is an Anterior Crucia... more Background and Aims One of the most common and dangerous injuries in sports is an Anterior Cruciate Ligament (ACL) injury. Today, despite the ACL injury prevention programs, the prevalence of this injury remains high. Most of the instructions used in injury prevention programs are based on internal focus, while studies have shown that using external focus can improve performance in individuals. The purpose of this study was to investigate the effect of focus of attention on eight weeks of anterior cruciate ligament injury prevention training on landing skill kinetic variables in soccer players. Methods The current methodology included 35 players from 3 premier league teams in Tehran province. The teams were randomly divided into three groups of Prevent injury and Enhance Performance (PEP) exercises based on the External Focus (EF) (12 people), Internal Focus (IF) (12 people), and control group (11 people). In the pretest of ground reaction force, rate of loading, and time to stabilization during landing skill. The training groups performed pep injury prevention exercises for eight weeks and related instructions instead of warm-up exercises. Control group players were performing the regular activities. ANOVA with repeated measures and one-way ANOVA and Tukey post hoc tests were used to evaluate changes Results The test results showed significant changes in vertical, anterior-posterior ground reaction force and rate of loading in the external focus group (P≤0.05). But there was no critical difference in time to stabilization and internal-external ground reaction force. Conclusion According to the results, external focus instruction has positive effects on kinetic components. Therefore, it is recommended that exercises based on these instructions be used to reduce the risk of ACL injury and to repair this injury.

Physical Treatments - Specific Physical Therapy

Purpose: Taekwondo is a martial art and contact sport in which the athletes’ goal is to strike th... more Purpose: Taekwondo is a martial art and contact sport in which the athletes’ goal is to strike the opponent with maximal force. This fact exposes taekwondo practitioners to the permanent risk of injuries. Therefore, the current prospective study aimed to investigate the internal risk factors of lower extremity injuries in the adolescent male taekwondo players. Methods: In total, 60 adolescent taekwondo players of Iran Premier League voluntarily participated in this research. Before league commencement, navicular drop, Q angle, knee hyperextension angle, the dorsiflexion/plantarflexion range of motion, hamstring flexibility, and their dynamic balance were measured. Then, the injuries of these taekwondo players were recorded during the study time. Results: The injury incidence rate was 7.9 per 1000 hours of exposure (95% confidence interval, 5.33-10.40). The logistic regression analysis data indicated a significant relationship between the Q angle and injuries incidence rate (odds rat...

Asian Journal of Sports Medicine

European Journal of Sport Science

Physical Therapy in Sport