Prediction of Ankle and Knee Injuries with Static Leg Balance Test
Khalil
Khayambashi
Professor of Physical Education and Sport Sciences, University of Isfahan
author
Navid
Ghoddosi
M.Sc. of Sports Injuris & Corrective Exercises, University of Isfahan
author
Alireza
Falah
M.Sc. of Sports Injuris & Corrective Exercises, University of Isfahan
author
text
article
2017
per
With expansion of sport activities, sport related injuries have also increased. Several studies revealed that one of the risk factors for lower extremity injuries is balance weakness. The purpose of the present study was to predict lower extremity injuries using single leg balance test. Five hundred and one professional male and female athletes participated in this research. Before the start of the season, single-leg balance test was administered, and at the end of the season the lower extremity injuries reports were gathered from team physicians. The discriminant analysis and chi-square were used for statistical analysis. According to the findings, single-leg balance test may predict the players’ risk of ankle and knee injuries
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
8
v.
20
no.
2017
17
36
https://smj.ssrc.ac.ir/article_897_41cf8dc30a8492788a980a0cc30238a1.pdf
dx.doi.org/10.22089/smj.2017.897
Comparison of Leg Stiffness and Maximum Ground Reaction Force on Area-Elastic Surfaces with Different Stiffness with Focus on Surface Familiarity
Seyed Abbas
Farjad Pezeshk
Ph.D. in Sports Biomechanics, Kharazmi University
author
Heidar
Sadeghi
Professor of Sports Biomechanics, Kharazmi University
author
Mohammad
Shariatzadeh Joneidi
Assistant Professor of Sport Physiology, Sports Sciences Research Institute of Iran
author
Zahra
Safaeepoor
Assistant Professor, Orthotics and Prosthetics Department, University of Social Welfare and Rehabilitation Sciences
author
text
article
2017
per
The purpose of this study was to compare vertical stiffness and maximum ground reaction force on elastic surfaces with different stiffness with focus on surface familiarity. Vertical stiffness and maximum ground reaction force during hopping and landing from height on five surfaces with 200–500 kN stiffness were measured for 30 young men. The results of the analysis of variance showed that there were significant differences in leg stiffness on different surfaces, and also before and after familiarity with surfaces. According to the results of this study, unlike other objects, human adapts himself when encountering new surface and in this way, depending on the task, can keep normal center of mass pattern and reduce the forces.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
8
v.
20
no.
2017
37
52
https://smj.ssrc.ac.ir/article_879_f4f86512d828fb55730307e405675e98.pdf
dx.doi.org/10.22089/smj.2017.879
Comparison of the Amount and Ratio of Ankle Muscles Isometric Strength in Persons with Planus, Cavus and Normal Foot Types
Mehdi
Ghaderiyan
Ph. D Student of Sport Injury and Corrective Movements, University of Isfahan
author
Gholam Ali
Ghasemi
Associate Professor of Sport Injury and Corrective, University of Isfahan
author
text
article
2017
per
The purpose of this study was to compare the amount and ratio of ankle muscles isometric strength in persons with planus, cavus, and normal foot types. Male students (n=450) were assessed with podoscope, foot scanner and Staheli index, and 90 of them were selected and divided into planus, cavus and normal foot groups (n=30). To measure isometric strength, we used a digital dynamometer. Average isometric strength of invertors in planus group was less than that in cavus and normal foot groups. Compared with cavus group, mean isometric strength of dorsiflexors and the ratio of invertor muscles isometric strength to evertor muscles isometric strength in planus group were smaller and greater, respectively. The results were indicative of weakness in invertors, dorsiflexors, and the ratio of invertors to evertors in planus group. Therefore, it is recommended to flexible planus foot deformity correction emphasis on strengthening invertors and dorsiflexors.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
8
v.
20
no.
2017
53
72
https://smj.ssrc.ac.ir/article_898_dacc81fadeeaf328e52e85784890bc36.pdf
dx.doi.org/10.22089/smj.2017.898
Relationship between Lower Extremity Muscle Strength and Functional Balance in Children with Spastic Cerebral Palsy
Leila
Youzbashi
Ph.D. Candidate of Sport Injuries and Corrective Exercises, University of Tehran
author
Mohammad Hossein
Alizadeh
Professor of Sport Injuries and Corrective Exercises, University of
author
Anoshirvan
Kazemnejad
Professor of Biostatistics, Tarbiat Modares University
author
Siroos
Chobineh
Associate Professor of Sport Physiology, University of Tehran
author
text
article
2017
per
Damage to the developing brain of cerebral palsy children leads to compromised balance and muscle strength, difficulties in performing activities of daily life and walking,which results in falls. The aim of this study was to examine the relationship between lower extremity muscular strength and functional balance in children with cerebral palsy. For this purpose, 54 males (aged 6–12) with cerebral palsy, in gross motor function classes I–III, were selected. The results showed no significant relationship between muscle strength of lower limb and functional balance. Therefore, these two factors are independent of each other, and exercises must be used in as a complement to improve the performance of daily activities and avoid falls.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
8
v.
20
no.
2017
73
88
https://smj.ssrc.ac.ir/article_857_242390456b5109fa7ed577fd823bf201.pdf
dx.doi.org/10.22089/smj.2017.857
Comparing the Effects of Ten Weeks of Regular Corrective Exercise and Corrective Exercise with Whole Body Vibration Apparatus on Upper Cross Syndrome
Seied Mohammad
Hosseini
Ph.D. Student of Sport Injury & Corrective Exercise, University of Isfahan
author
Nader
Rahnama
Professor of Sport Injury & Corrective Exercise, University of Isfahan
author
Amir Hosein
Barati
Associate Professor of Sport Injury & Corrective Exercise, Shahid Beheshti University
author
text
article
2017
per
The purpose of this study was to compare the effects of regular corrective exercise and corrective exercise with whole-body vibration on upper cross syndrome. Subjects were 45 students who were randomly divided into three equal groups: corrective exercise with vibration, regular corrective exercise, and control. Kyphosis (flexible ruler), forward head and round shoulders (side photography) were measured before and after 10-week training. Repeated measure test results revealed significant within-group and between-groups differences in upper cross syndrome between pre-training and post-training values. Regular corrective exercise had a significant effect on upper cross syndrome.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
8
v.
20
no.
2017
89
106
https://smj.ssrc.ac.ir/article_900_20ef3a69fbe79204b2d3ac8455675535.pdf
dx.doi.org/10.22089/smj.2017.900
Effect of 8 Weeks of FIFA 11+ Training on Ground Reaction Force Variables During Single Leg Drop Landing in Young Male Soccer Players
Vahid
Ghasemi-paeendehi
Ph.D. of Sport Injuries & Corrective Exercises, Kharazmi University
author
Seyed Sadrodin
Shojaeddin
Associated Professor of Sport Injuries & Corrective Exercises, Kharazmi University
author
Esmail
brahimi-Tekamejani
Professor of Physical Therapy and electrophysiology, University of Tehran Medicine Sciences
author
Amir
Letafatkar
Assistant Professor of Sport Injuries & Corrective Exercises, Kharazmi University
author
Mansour
Eslami
Associated Professor of Sport Biomechanics, University of Mazandaran
author
text
article
2017
per
The aim of this study was to investigate the effect of 8 weeks of FIFA 11+ training on ground reaction force variables during single leg drop landing in young male soccer players. Twenty-four soccer players aged under 21years old were randomly divided into experimental and control groups. The experimental group underwent 2-month FIFA 11+ training. Peak values for the components of Ground Reaction Force were significantly decreased during single leg drop landing in experimental group. In contrast, time to peak of these force variables significantly increased. According to these findings, it can be concluded that FIFA 11+ training program may have a positive effect in modifying knee injury risk factors.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
8
v.
20
no.
2017
107
124
https://smj.ssrc.ac.ir/article_895_e189b8846deeb15b6932de7edc9cfc22.pdf
dx.doi.org/10.22089/smj.2017.895