ORIGINAL_ARTICLE
Body Composition Role in Predicting Sports Injuries: A Systematic Review
Introduction: This study aimed to review the literature on the role of body composition as arisk factor for injury in an athletic population.Materials and Methods: We searched articles in English in Google Scholar Science direct,PubMed, WOS, Scopus, ProQuest, and Cochrane Library databases without time limit until2020 using keywords related to "body composition" and "sports injury".Results: Considering criteria including inclusion and exclusion, 10 papers out of 1322 studieswere comprehensively reviewed. It was found that body composition components are relatedto musculoskeletal injuries in the athletic population. Body mass index, weight and bonedensity are known as risk factors in the development of sports injuries.Conclusion: This systematic review provides preliminary evidence of the relationship between body composition and prediction of injury in athletes. Defects in various aspects ofbody composition were recognized as potential risk factors for lower extremity injuries.Likewise, body composition should be considered when screening athletes.
https://sshr.ut.ac.ir/article_77692_85bd166809a0b42ffedc4aaf8f00e3dd.pdf
2019-07-01
71
80
10.32598/JESM.11.2.3
Body Composition
Risk Factor
sports injury
Prevention
Farahnaz
Amirshaghaghi
1
Department of Sports Physiology, Faculty of Physical Education, University of Tehran, Tehran, Iran.
AUTHOR
Parisa
Pournemati
famirshaghaghi@ut.ac.ir
2
Department of Sports Physiology, Faculty of Physical Education, University of Tehran, Tehran, Iran.
LEAD_AUTHOR
Shahrzad
Zandi
3
Department of Health and Sports Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
AUTHOR
ORIGINAL_ARTICLE
Effects of Six-week Hopping Exercise on Time to Stabilization and Perceived Stability in Athletes With Chronic Ankle Instability During Single-leg Jump-landing
Introduction: To examine the effects of a 6-week hopping exercise program on time to stabilization and perceived stability among athletes with chronic ankle instability. This is a randomized controlled trial.Materials and Methods: A total of 28 basketball players with chronic ankle instability (Mean±SD age; 22.67±2.88 y, Mean±SD weight: 80.47±8.48 kg, Mean±SD height: 186.82±3.09 cm) participated in this study and were randomly divided into two equal groups of 14 people each: 1. Experimental; and 2. Control. The experimental group performed hop exercises 3 times per week for 6 weeks. The control group received no intervention. Time to stabilization for anterior-posterior and medial-lateral components of ground reaction force, as well as ankle joint function assessment tool were found before and immediately after the exercise program. Descriptive statistics, independent t-test, and paired sample t-test were used to analyze the data at the significance level of 95% (α≤0.05).Results: The 6-week hopping exercise program led to a significant decrease in the time to stabilization of medial-lateral and anterior-posterior of ground reaction force and also a significant increase in the score of ankle joint function assessment tool (p <0.05).Conclusion: Given the effectiveness of hopping exercises, postural control deficit, and time to stabilization in sport exercises, it is suggested that these selected exercises be used in training and rehabilitation protocols.
https://sshr.ut.ac.ir/article_77695_91b963f835e6d7a18cece93b27f1a1a3.pdf
2019-07-01
81
88
10.32598/JESM.11.2.1
Chronic Ankle Instability
Hopping Exercises
Functional
Postural control
athlete
Mohammad
Karimizadeh Ardakani
m.karimizadeh@ut.ac.ir
1
Department of Sports Medicine and Health, Faculty of Physical Education And Sport Science, University of Tehran, Tehran, Iran.
LEAD_AUTHOR
Hooman
Minoonejad
h.minoonejad@ut.ac.ir
2
Department of Sports Medicine and Health, Faculty of Physical Education And Sport Science, University of Tehran, Tehran, Iran.
AUTHOR
Erik
Wikstrom
ewikstro@email.unc.edu
3
Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, North Carolina, USA.
AUTHOR
Reza
Rajabi
rrajabi@ut.ac.ir
4
Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, North Carolina, USA.
AUTHOR
Ali
Sharifnezhad
a_sharifnezhad@dr.com
5
Department of Biomechanics, Sport Science Research Institute, Tehran, Iran.
AUTHOR
ORIGINAL_ARTICLE
Anticipatory Electromyographic Activity and Onset Time in Selected Muscles of Lower Limb Between the Active and Inactive Old Women
Introduction: This study aimed to investigate the onset time and the electromyographic activity level of the selected lower limb muscles in the active and inactive old women.Materials and Methods: In this case-control study, 28 old women with a Mean±SD age of 61.07±0.88 years were selected in the inactive (15 people) and active (13 people) groups. The electrical activity of the selected muscles of the lower limbs was collected by the EMG device in a stair down movement. Results: The onset time of tibialis anterior, vastus lateralis, and biceps femoris muscles are faster in the active group (p <0.05). Besides, the activity level of the rectus femoris muscle in the interval of 100 ms before the initial contact and the ratio of the vastus medialis muscle to the biceps femoris muscle was significantly lower (p <0.05) in the active group.Conclusion: It seems that the muscles of the lower limbs in the group of women with regular physical activity are activated faster than the inactive group and the decrease in the activity of the rectus femoris muscle and the ratio of the vastus medialis to the biceps femoris muscle in the active women may be accompanied by fatigue and reduced intra-articular forces. Therefore, it is recommended that old women participate in regular and active exercise programs to improve their onset times of muscle activity.
https://sshr.ut.ac.ir/article_77760_d92aab77bbdbd1ce12f538f8ad4d8000.pdf
2019-07-01
89
96
10.32598/JESM.11.2
Electromyography
Aged
exercise
Muscles
Women
Najme
Noghani Ardestani
najmenoghani@yahoo.com
1
Department of Corrective Exercise & Sport Injury, Faculty of Physical Education and Sport Sciences, Allameh Tabataba'ei University, Tehran, Iran.
AUTHOR
Rahman
Sheikhhoseini
rahman.pt82@gmail.com
2
Department of Corrective Exercise & Sport Injury, Faculty of Physical Education and Sport Sciences, Allameh Tabataba'ei University, Tehran, Iran.
LEAD_AUTHOR
Farideh
Babakhani
farideh-babakhani@yahoo.com
3
Department of Corrective Exercise & Sport Injury, Faculty of Physical Education and Sport Sciences, Allameh Tabataba'ei University, Tehran, Iran.
AUTHOR
ORIGINAL_ARTICLE
Self-compassion and Pre-competition Anxiety in Martial Arts Student Athletes
Introduction: The present study aimed to investigate the relationship between Self-compassion and precompetitive anxiety among female athlete students.Methods: This was a descriptive correlational study. Two hundred and fifty-three female students (140 taekwondo & 113 karate) were selected among athletes present at the 14th Student Cultural Sports Olympiad. Self-compassion Scale and Competitive State Anxiety–2 were used in this study before competing in games to measure the aforementioned theoretical constructs.Results: The obtained results revealed a significant relationship between pre-competitive anxiety and Self-compassion. Moreover, the components of this characteristic positively predicted self-confidence variance; however, this prediction reversed with somatic and cognitive anxiety.Conclusion: Based on the current study results, Self-compassion plays a moderating role in the pre-competitive anxiety of female martial arts athletes. Therefore, improving this characteristic should be considered to promote self-confidence and reduce the pre-competitive anxiety in these athletes.
https://sshr.ut.ac.ir/article_77696_23f64d6106642b94a87eb90a4e1bd583.pdf
2019-07-01
97
104
10.32598/JESM.11.2.4
Self-compassion
State anxiety
Cognitive appraisal
Self-confidence
Mindfulness
Mahmoud
Mohebi
mohebi.mahmoud@ut.ac.ir
1
Department of Motor Behavior and Sport Psychology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
AUTHOR
Athena
Gharayagh Zandi
a.gh.zandi@ut.ac.ir
2
Department of Motor Behavior and Sport Psychology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
AUTHOR
Sahar
Zarei
zarei.sahar@ut.ac.ir
3
Department of Motor Behavior and Sport Psychology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
AUTHOR
Hassan
Gharayagh Zandi
ghzandi110@ut.ac.ir
4
Department of Motor Behavior and Sports Psychology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
LEAD_AUTHOR
ORIGINAL_ARTICLE
The Effect of Selected Exercise Group on Motor Skills and Cognitive Functions in Children With Autism Spectrum Disorders
Introduction: The present study aimed to determine the effects of a selected group exercise on motor skills and cognitive function in children with Autism Spectrum Disorders (ASDs).Methods: Forty children with ASD aged 5-12 years participated in this quasi-experimental study. The Bruininks–Oseretsky Test of Motor Proficiency (BOTMP), and the Wisconsin Card Sorting Test (WCST) were performed in 3 assessment stages of baseline, pretest, and posttest in Sports, Play, and Active Recreation for Kids (SPARK). The repeated-measures Analysis of Variance (ANOVA) and Analysis of Covariance (ANCOVA) were used for analyzing the collected data.Results: The current research results demonstrated that the selected exercises presented positive effects on motor skills (P<0.05) in the studied subjects; however, they indicated no significant effects on their cognitive function (P>0.05).Conclusion: According to the present study results, the SPARK’s training is effective on children with ASDs and severe mobility limitations; however, it presented no cognitive function improvement in the study participants.
https://sshr.ut.ac.ir/article_77889_8b1434755b8831d74d5d48bf366f2eac.pdf
2019-07-01
105
112
10.32598/JESM.11.2.5
Sports
Play and acyive Recreation for Kids (SPARK)
Autism Spectrum Disorder
executive function
motor skill
Mahbubeh
Ghayour Najafabadi
m.ghayournaj@ut.ac.ir
1
Department of Motor Behavior, Faculty of Physical Education and Sport Science, University of Tehran, Tehran, Iran.
AUTHOR
Amir
Sobh-Rhakhshankhah
rakhshankhah.md@gmail.com
2
Sepehr Heart center of Baharloo hospital, Tehran University of Medical Sciences, Tehran, Iran.
LEAD_AUTHOR
Sepideh
Niyazi
sepideniyazi.sn@gmail.com
3
Shariatee hospital, Tehran University of Medical Sciences, Tehran, Iran.
AUTHOR
ORIGINAL_ARTICLE
Optimal Canceling of the Physiological Tremor for Rehabilitation in Parkinson’s Disease
Introduction: This study was conducted to control hand tremors and decrease adverse effects due to the high field intensity in advanced Parkinson’s disease. We aimed at concurrently controlling two areas of Basal Ganglia (BG) in a closed-loop strategy.Methods: In the present research, two nuclei of BG, namely subthalamic nucleus and globus pallidus internal were simultaneously controlled. Furthermore, to enhance the feasibility of the suggested control strategy, the coefficients of the controller were determined using a hybrid version of the harmony search and cuckoo optimization algorithm. Results: The advantages of the applied method include decreasing hand tremors and applied electric field intensity to the brain; consequently, it leads to reducing adverse effects, such as muscle contraction and speech disorders. Moreover, the purposed controller has achieved superior performance against changing the parameters of the model (robustness analysis) and under noise tests, compared to other conventional controllers, such as Proportional Integrator (PI) and Proportional Derivative (PD).Conclusion: The employed approach provided an effective strategy to reduce hand tremors. It also decreased the delivered high field intensity to the brain; consequently, it reduced adverse effects, such as memory loss and speech disorders. It is important to ascertain the superior performance of the suggested closed-loop control scheme in different conditions and levels of tremor. Such a function was examined in terms of robustness against the variation of parameters and uncertainties. We also obtained time domain outcomes, i.e., compared with the state-of-the-art approaches.
https://sshr.ut.ac.ir/article_79117_a8e240cf5d5400111dab52e5adba6d21.pdf
2019-07-01
113
124
10.32598/JESM.11.2.7
Parkinson’s disease
deep brain stimulation (DBS)
Hand tremor
Behnam
Faraji
behnamfaraji22@gmail.com
1
Department of Electrical and Biomedical Engineering, Faculty of Biomedical Engineering, University College of Rouzbahan, Sari, Iran.
AUTHOR
Zahra
Esfahani
zahra.esfahani@ieee.org
2
Department of Electrical Engineering, University of Alborg, Alborg, Denmark.
AUTHOR
Kourosh
Rouhollahi
k_rouhollahi@stu.yazd.ac.ir
3
Department of Mathematics, Faculty of Applied Mathematics, Yazd University, Yazd, Iran.
AUTHOR
Davood
Khezri
4
Department of Sport Biomechanics and Technology, Sport Science Research Institute, Tehran, Iran.
LEAD_AUTHOR
ORIGINAL_ARTICLE
Balance Performance With and Without Visual Information: A Comparison of Elite Players With Chronic Ankle Instability
Introduction: This research was conducted to determine whether professional athletes with Chronic Ankle Instability (CAI) exhibit differences in maintaining balance under conditions of with and without visual informationMaterials and Methods: Forty-five elite players with CAI were classified into soccer, volleyball, and basketball groups (n=15 each). All participants performed a static single-leg balance test in conditions wherein visual information was provided and withheld. Also, their center of pressure (CoP) oscillation parameters was measured. The data were examined through an analysis of variance (ANOVA) and the Tukey test.Results: A significant difference was found between the soccer and volleyball players (P=0.034) in anteroposterior CoP displacement. Furthermore, there was a significant difference between soccer compared with volleyball (P=0.001) and basketball (P=0.02) groups regarding mediolateral sway and sway area (P=0.003 and P=0.03, respectively) when they performed the test with their eyes open. A significant difference occurred between the soccer and volleyball players concerning anteroposterior and mediolateral sway (P=0.002 and P=0.04, respectively) and sway area (P=0.004) when they performed the test with their eyes closed.Conclusion: Given the necessity of maintaining a good balance in sports, volleyball coaches should design practices that reduce players’ reliance on visual information. These practices should strengthen their proprioceptive abilities through an increased challenge to their proprioceptive senses.
https://sshr.ut.ac.ir/article_80940_ca4d80a21974cdc23fa2a25291dfe72d.pdf
2019-07-01
125
132
10.32598/JESM.11.2.8
Postural control
Chronic Ankle Instability
soccer
Volleyball
basketball
Zahra
Raeisi
z_raisi13@yahoo.com
1
Department of Sport Injuries and Corrective Exercises, Faculty of Sport Science, Arak University, Arak, Iran.
LEAD_AUTHOR
Ali
Yalfani
ali_yalfani@yahoo.com
2
Department of Sports Injuries and Corrective Exercises, Faculty of Sport Science, University of Bu-Ali Sina, Hamedan, Iran.
AUTHOR