@article { author = {Johari, Kamran and Shojaedin, Seyed Sadredin}, title = {The Effect of Hip and Ankle Joint Abductor/Adductors Fatigue on Dynamic Balance of Soccer Players}, journal = {Sport Sciences and Health Research}, volume = {5}, number = {2}, pages = {5-22}, year = {2014}, publisher = {University of Tehran Press}, issn = {2981-0205}, eissn = {2981-0205}, doi = {10.22059/jsmed.2014.36539}, abstract = {The aim of this study was to examine the effect of hip and ankle jointabductor/adductors fatigue on the dynamic balance of soccer players. 20male physical education students (Mean±SD, age: 20.24±0.73 yrs, height:170.27±4.28 cm, weight: 67.38±7.24 kg, and BMI: 23.22±2.02 kg/m²) whoparticipated three times per week in university soccer team program,without any lower extremity injury voluntarily participated in this study. Inorder to estimate the participants' dynamic balance, Star Excursion BalanceTest (SEBT) in eight directions was applied after a short warm-up.Dynamometer Isokinetic Biodex was used to execute fatigue in hip andankle joint abductor/adductor muscles. Each subject participated in twomuscle fatigue sessions. In each session, the fatigue program was randomlyassigned to one of the muscle groups of hip abductor/adductor and anklejoint evertor/inventor in repeated contractions until reaching 50% ofprimary maximum torque with the interval of 72 hours in the same situationas far as possible. Afterwards, SEBT posttest was conducted. Descriptivestatistics, dependent t test and variance analysis (with repeated measures)was used for statistical analysis at P<0.05. The isokinetic fatigue of hip andankle joint abductor/adductors significantly decreased the accessibledistance in SEBT test. Furthermore, fatigue program in the hipabductor/adductors decreased the accessible distance more than the anklejoint evertor/inventors. Due to the results, the fatigue of hipabductor/adductors was more effective in the dynamic balance of soccerplayers than ankle joint evertor/inventors.}, keywords = {Ankle Abductors,Ankle Adductors,Dynamic balance,fatigue,Hip Abductors,Hip Adductors}, url = {https://sshr.ut.ac.ir/article_36539.html}, eprint = {https://sshr.ut.ac.ir/article_36539_e0fc8cb5bce7bafef7e08eb3025797a0.pdf} } @article { author = {Seyedi, Mohammadreza and Shirzad, Elham and Mirkarimpour, Seyyed Hossein and Rezvankhah Golsefidi, Neda}, title = {The Comparison of High-Risk Patterns of ACL Injury in Dominant and Non-Dominant Legs of Males and Females during Cutting Maneuver}, journal = {Sport Sciences and Health Research}, volume = {5}, number = {2}, pages = {23-37}, year = {2014}, publisher = {University of Tehran Press}, issn = {2981-0205}, eissn = {2981-0205}, doi = {10.22059/jsmed.2014.36540}, abstract = {From injury risk perspective, a change in body direction during fastsport movements is always noticeable while ACL injury is an importantmechanism. This research aimed at comparing high-risk patterns of ACLinjury in dominant and non-dominant legs of males and females duringcutting maneuver. Participants were national and club squash playersincluding 13 females (mean age: 23.04±6.6 yr, height: 163.3±5.4 cm,weight: 61.60±5 kg) and 13 males (mean age: 24.7±4.1 yr, height:179.9±5.8cm, weight: 78.8±7.8 kg). In order to measure knee flexion, trunkflexion, trunk lateral flexion and knee valgus angles during cuttingmaneuver and in two phases of initial foot contact with the ground and midstance, cutting maneuver with dominant and non-dominant legs wasanalyzed. After the markers had been installed, cutting maneuver wasrecorded by Casio Exilim camera with 300 Hz frequency and the recordedmovements were analyzed by WinAnalyze software (Version D34-1). SPSS(version 20) and Paired-samples t test were used to compare the anglesobtained by the motion analysis of dominant and non-dominant legs. Theresults indicated that knee and trunk joint angles during cutting maneuverhad a significant difference between dominant and non-dominant legs offemales while this difference was significant in two parameters of knee and trunk flexion at initial contact among males (P􀂕0.05). These results showed that high-risk patterns of ACL injury had a higher rate of incidence in cutting maneuver with non-dominant leg. Thus ACL injury risk is higher in the cutting maneuver with non-dominant leg than dominant leg.}, keywords = {ACL injury,cutting maneuver,dominant leg,knee kinematic,trunk kinematic}, url = {https://sshr.ut.ac.ir/article_36540.html}, eprint = {https://sshr.ut.ac.ir/article_36540_06971c637b67eb6d7894cb2f98205d13.pdf} } @article { author = {Habibi Tirtashi, Fereshteh and Eslami, Mansour and Tazike Lemeski, Zeinab and Hoseinzade, Effat}, title = {The Effect of Foot Arch on Compressive and Shear Forces of Ankle Joint in Gait Initiation}, journal = {Sport Sciences and Health Research}, volume = {5}, number = {2}, pages = {39-51}, year = {2014}, publisher = {University of Tehran Press}, issn = {2981-0205}, eissn = {2981-0205}, doi = {10.22059/jsmed.2014.36541}, abstract = {The aim of this study was to compare the compressive and shear forces ofankle joint in subjects with flat foot and pes cavus foot. 30 female universitystudents (10 subjects with flat feet, 10 subjects with pes cavus feet, 10subjects with normal feet) (mean age 23±1.7 year, height 165±2.5 cm andweight 53±2.5 kg) participated in this study. Compressive and shear forcesof ankle joint were calculated using inverse dynamic method. Navicular-Drop Test was used to measure the arch rate of the foot. One-factor ANOVAwith repeated measures was used to test the hypotheses (P􀂔0.05). Thestatistical results showed a significant difference between pes cavus andnormal feet, pes cavus and flat feet as well as between normal feet and flatfeet in the compressive force of the ankle joint (P<0.001). Also, findingsshowed a significant difference between pes cavus feet and flat feet(P=0.029) and normal feet and flat feet in the shear force of the ankle joint(P=0.001). No significant difference was observed between normal feet andpes cavus feet in the shear force of the ankle joint (P=0.163). Accordingly,increasing compressive force of ankle joint could be a predisposing factorto ankle sprain and bone injuries in pes cavus feet.}, keywords = {Ankle Joint,Compressive Force,Injury,navicular height,Shear Force}, url = {https://sshr.ut.ac.ir/article_36541.html}, eprint = {https://sshr.ut.ac.ir/article_36541_7f3cfb2227f9b12fd4b139dc99760649.pdf} } @article { author = {Shamsi Majelan, Ali and Farahani, Reyhane and Helalat, Zeinab and Aghale, Ali}, title = {The Investigation of Upper Extremity Performance of Normal-Hearing and Congenital Severe to Profound Hearing-Impaired Students Using YBT-UQ}, journal = {Sport Sciences and Health Research}, volume = {5}, number = {2}, pages = {53-71}, year = {2014}, publisher = {University of Tehran Press}, issn = {2981-0205}, eissn = {2981-0205}, doi = {10.22059/jsmed.2014.36542}, abstract = {Although communication problem is the main defect resulted fromhearing impairment, other physical problems may be associated with it. Theaim of this study was to investigate the performance of upper extremity inmale and female hearing-impaired and normal-hearing students with YBalance Test of Upper Quarter (YBT-UQ). The sample was comprised of 80students including 40 congenital severe to profound hearing-impaired girlsand boys (age: 18.10±2.77 yr and 17.95±2.56 yr) and 40 normal-hearinggirls and boys (age: 17.55±0.60 yr and 17.60±0.56 yr) who were selected bythe purposive non-random method from normal and deaf high schools inGuilan province. Subjects' personal information, height, weight and medicalrecords were collected using their medical profiles. The YBT-UQ was usedto evaluate the performance of upper extremity in the closed kinematicchain under medial, inferior – lateral and superior – lateral directions. Tocompare the groups' performance and directions, one-way ANOVA wasused while paired t test was used to compare dominant and non-dominantextremity. Results revealed no significant difference between theperformance of dominant and non-dominant upper extremities in all groups(P􀂔0.05). There were significant differences among the four groups: boyswithout hearing-impairment, boys with hearing-impairment, girls withouthearing-impairment, and girls with hearing-impairment performed better(P<0.05). However, only the difference between normal-hearing andhearing-impaired girls was not statistically significant (P􀂕0.05). Inconclusion, there was no difference in performing YBT-UQ between  dominant and non-dominant upper limbs; therefore, this test can be used toevaluate and examine the injured limb. Also, regarding the defect in thedynamic balance performance of hearing-impaired subjects and the effect ofgender on this defect and the importance of the upper extremity in dailyroutines, it is necessary to design and implement plans aiming at improvingtheir performance.}, keywords = {Dominant Limb,Hearing-Impaired,Kinematic Chain,Upper Extremity,Y Balance Test}, url = {https://sshr.ut.ac.ir/article_36542.html}, eprint = {https://sshr.ut.ac.ir/article_36542_ba4777d2bd79b652271fb17acf502cd2.pdf} } @article { author = {Esmaeili, Hamed and Anbarian, Mehrdad and Salari Esker, Fatemeh}, title = {The Effect of an Eight-Week Corrective Exercise Program on Plantar Pressure Distribution Pattern in Adolescents with Genu Varum Deformity during Stance Phase of Walking}, journal = {Sport Sciences and Health Research}, volume = {5}, number = {2}, pages = {73-86}, year = {2014}, publisher = {University of Tehran Press}, issn = {2981-0205}, eissn = {2981-0205}, doi = {10.22059/jsmed.2014.36543}, abstract = {The aim of this study was to determine the effect of an eight-weekcorrective exercise program on plantar pressure distribution pattern inadolescents with genu varum deformity. 12 male adolescents aged between13 and 17 with genu varum deformity were assigned in experimental groupand 12 subjects without this deformity were selected as the control group.Foot plantar pressure measurement system was used to measure footplantar parameters in stance phase of walking. Experimental groupreceived an eight-week corrective exercise program. A pretest and posttestwas conducted in the beginning and at the end of the study. The data wereanalyzed by independent and dependent t tests (P<0.05). Pretest resultsshowed that the experimental group had a greater plantar peak pressureunder the toes 2-5 areas in comparison with the control group (P=0.018).Moreover, the center of foot pressure in the exterior-interior lateraldirection in the heel contact phase had more supination (P=0.049).Corrective exercises reduced peak plantar pressure in the toes 2-5 region inthe experimental group (P=0.022) while no significant difference wasobserved in the amounts of the center of foot pressure in the interior-exterior lateral direction (P􀒹0.05). According to the findings of this study, it can be concluded that corrective exercises improves plantar pressuredistribution pattern among individuals with genu varum as well as thewalking pattern.}, keywords = {Adolescents,Corrective Exercises,Genu varum,Plantar Pressure,Walking}, url = {https://sshr.ut.ac.ir/article_36543.html}, eprint = {https://sshr.ut.ac.ir/article_36543_c39902fdfcbb63a891ec14e81990d04a.pdf} } @article { author = {Saadatian, Abouzar and Sahebozamani, Mansour and Imanizadeh, Saeed}, title = {Angle of Kyphosis Curve, Forward Head and Motion Rang of Shoulder Joint in Elite Handball Players}, journal = {Sport Sciences and Health Research}, volume = {5}, number = {2}, pages = {87-101}, year = {2014}, publisher = {University of Tehran Press}, issn = {2981-0205}, eissn = {2981-0205}, doi = {10.22059/jsmed.2014.36544}, abstract = {When athletes enter professional activities, they may face abnormalitieswhich are variable depending on the type of sport activities. Forward head,shoulder mal-alignments and spinal column are the main posturaldeviations in athletes with overhead activity. These abnormalities makeathletes prone to injury. This research was conducted with 68 athletes fromMES KERMAN, STAR FOROUGH KERMAN and SAMENOL HOJAJMASHAD teams who were selected by accessible method. The subjects weredivided into two groups: injured (N=40, age=24.27±4.43 yr, height=186.55±7.24 cm, weight=85.17±10.06 kg) and healthy (N=28, age=23.85±3.82yr, height=183.67±8.36 cm, weight=82.32±9.27 kg) using exclusioncriteria. To assess forward head, a goniometer was used; to assesskyphosis, a flexicurve and to assessment ROM, Leighton flexometer wereused. To study subjects' injuries, self-report injury form was used. Datawere analyzed with SPSS20, independent t test and Pearson correlationcoefficient (P􀂔0.05).The results showed a significant difference in angle ofkyphosis curve (P􀂔0.013) and forward head (P􀂔0.001) between healthy andinjured handball players. Also, there was a significant difference betweenthe angle of kyphosis curve and ROM of internal rotation of dominant hand  (r=0.72, P􀂔0.001), external rotation of dominant hand (r= -0.48, P􀂔0.002),internal rotation of non-dominant hand (r=0.79, P􀂔0.001), external rotationof non-dominant hand (r= -0.42, P􀂔0.038) and shoulder joint of injuredhandball players. It can be concluded that if athlete enter professionalsports and repeatedly train the specific skills, it may cause posturalabnormalities and injury. These abnormalities cause kinematic changes injoints.}, keywords = {External Rotation,Forward Head,Handball,Injury,Internal Rotation,Kyphosis,range of motion}, url = {https://sshr.ut.ac.ir/article_36544.html}, eprint = {https://sshr.ut.ac.ir/article_36544_9462ae29f69c49c2aabd70437f1fa506.pdf} }