Effect of Spinal Stabilizing exercises on Lumbar Hyperlordosis by StabilizerTM Pressure Bio-feedback Unit
Mansour
Saheb al-zamani
دانشگاه شهید با هنر کرمان
author
Azam
Abbaszadeh
دانشگاه شهید با هنر کرمان
author
text
article
2013
per
The purpose of this study was to investigate the effect of stability exercises on lumbar hyperlordosis by StabilizerTM Pressure Bio-feedback Unit in female students of Shahid Bahonar University of Kerman.24 subjects recruited from all of the hyperlordosis female students .subjects were randomly divided in to experimental(12) and control group(12), by using New York test,spinal mouse(back curve estimate), digital height and weight scale, goniometer(hamstring muscle flexibility), sit-up test(endurance of abdominal muscle). The experimental group carried out a corrective exercises by tabilizerTM Pressure Bio-feedback Unit for eight weeks, three sessions per week and 60 minutes per session. In beginning and ending of period,pre test and post test was taken. Lumbar lordosis, hamstring muscle flexibility and abdominal muscle endurance were measured before and after the test. Collected data was analyzed statically by using (t) independent and dependent statistical method. All analyzes were done in a significant level P<0/05. The results showed a significant decrease in the curve of back lordosis(P=0/01), a significant increase in hamstring muscle flexibility(P=0/01) and a significant increase in abdominal muscle endurance(P=0/01) in experimental group.Also the results didn’t show significant difference in these variables in control group. Finally, in this studywe found out the Stabilizing exercises are effective on decreasing of the lumbar hyperlordosis and increasing Hamstring muscle flexibility and abdominal muscle endurance.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
13
26
https://smj.ssrc.ac.ir/article_251_1dbe900f1a9523fe2573b8c183df6248.pdf
Designing basketball Talent Identification Software Based on Fuzzy Logic
Mohammad Hossein
Noori
دانشگاه خوارزمی
author
Heydar
Sadeghi
دانشگاه خوارزمی
author
text
article
2013
per
Using appropriate devices and scientific methods by coaches and trainers can accelerate the process of sport talent identification and development, and could also provide condition in which capable athletes to be directed in to suitable sport according to their abilities and skills. Former researches in scope of sport talent identification usually have been done in order to determine or normalize effective parameters. The purpose of this study was to design basketball talent identification algorithm based on fuzzy logic which ranks the athletes in five basketball posts. Due to expert opinion, essential parameters of basketball talent identification which also used in this software are; Height (Anthropometry), Agility (Ability of motion), Penalty-shoot (technical skill) and Self confident (psychology). Norms of young elite basketball players are also used as index. Then with considering parameters and index, a fuzzy algorithm is designed which classifies basketball players in Unmatched, Semi-matched, Matched, Brilliant and Rare class. Finally, proportionate to the parameters of all players, the best post for each player and his ranks in five posts are determined. These results can help trainers and coaches in order to select talented and capable basketball players for each post.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
27
38
https://smj.ssrc.ac.ir/article_252_d03d3e9629423cfd9d2de9bf8df7b364.pdf
Effect of Genu Varum Deformity on Dynamic Stabilization during Single-Leg Jump-Landing
Faraj allah
Shahamiri fatahi
دانشگاه تهران
author
Mohammad Hossein
Alizadeh
دانشگاه تهران
author
Homan
Minoonejad
دانشگاه تهران
author
text
article
2013
per
Impairment of postural control can increase the risk of injury during sport activities. Genu varum deformity may change, crossing line of gravity from center of knee towards the medial and so disturb dynamic stability. The purpose of this study was to investigate the effect of genu varum deformity on dynamic stabilization during single-leg jump-landing. Twenty- eight male students (age: 21.53±1.65 year, weight: 66.767±7.51kg, height: 173/38 ± 4/54 cm) according to their knee conditions divided in two groups, genu varum (n = 14) and normal knee (n = 14) were participated in this study. Subject’s time to stabilization were evaluated in anterior-posterior and medial-lateral directions with force plate system during jump-landing task. The results showed that no significant difference among both groups in time to stabilization in Anterior - posterior direction , while significantly higher time to stabilization was found in the genu varum group compared to the normal groups in medial-lateral and overall direction(p < 0.05). The results showed that genu varum deformity may affect postural sway in medial-lateral and overall direction. It seems that increased in time to stabilization in medial-lateral and overall direction in genu varum group due to a change in crossing line of gravity .Therefore, in order to prevent further damage caused by the jump - landing in subjects with genu varum deformity balance training program recommended.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
39
52
https://smj.ssrc.ac.ir/article_253_99fd1889e3db6b2ba497f4c01be38698.pdf
The Effect of Six- weeks Core Stability Training on Trunk Kinematics of Female Athletes with Neuromuscular Deficit of Trunk Control
Shadan
Mohammad pur
دانشگاه تهران
author
Reza
Rajabi
دانشگاه تهران
author
Elham
Shirzad
دانشگاه تهران
author
text
article
2013
per
The anterior cruciate ligament (ACL) is one of the most commonly injured ligaments of the knee.This study investigated the effects of core stability training on trunk kinematics including trunk flexion and lateral flexion in female athletes with neuromuscular deficit of trunk control to prevent ACL injury. Twenty-two female athletes were randomly assigned into a training group (n = 11), performing the functional stabilization training during 6 weeks, and a control group (n = 11,) without any physical training. The kinematic assessment of the trunk with motion analysis system was performed during a single-leg drop landing before and after training. After 6 weeks, the TG significantly increased the value for trunk flexion (from 20.08 to 27.67), but there wasn’t any significant reduction in trunk lateral flexion (p=0.314). Core stability training program used in the current study successfully increased trunk flexion in training group. It can be stated that probability with increasing core stability, muscles recruitment strategy may have improved. We concluded that, 6-week training in female athletes with deficit in trunk neuromuscular control can result in reduction of modifiable risk factors of ACL injury including biomechanical and neuromuscular factors.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
53
72
https://smj.ssrc.ac.ir/article_254_35022327433b0c53e947aab6c5e97721.pdf
Physical Activity and Sports in Adolescents with Hemophilia in Iran, 2011-2012
Leila
Valizadeh
دانشگاه علوم پزشکی تبریز
author
Fahimeh
Sadat Hosseini
دانشگاه علوم پزشکی شیراز
author
text
article
2013
per
Physical activity effects not only on the cardiovascular system and metabolic, also it can lead to certain improvements, particularly in strengthening the muscles of patients with hemophilia. Approximately 50% of adolescents with chronic diseases do not fully care recommendations. The aim of this study was to determine the status of physical activity and sports among adolescents with hemophilia in Iran. In this descriptive -analytical research with convenience sampling method were examined the physical activities among 108 adolescents with hemophilia. The researcher making questionnaire was used to evaluate physical activities in the adolescents with hemophilia as self-report. Statistical analysis was performed using the frequency, mean and standard deviation in the SPSS (version 13). 65.4% of the participants in this study did not participate in the physical activities. 70.5% of the young people were devoted to physical activity and sport for 5 hours or less per week. Only 31.3% of the adolescents believed that their selected exercise perfectly suited with their age and disease. 56.1% of the participants in this study weren't informed about threatening bleeding and also 22.4% of the young people haven't informed about sports with probability of bleeding and damage. The adolescents' performance in this study wasn’t put in suitable place in many physical activities and sports-related fields. There is a need to improve the status of people with hemophilia in the many areas related to physical activity and sport that considering the systematic and consistent planning can be useful in regarding to provide the necessary training and utilization of hemophilia centers' related institutions providing sports services.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
73
90
https://smj.ssrc.ac.ir/article_255_6cec0401c677c29dd8eec3cd3b239433.pdf
Comparison of Two Methods Quadriceps Muscle Strengthening on Land and in the Water on pain, Function, Static and Dynamic Balance in Females with Patellofemoral Pain Syndrome
Ali
Yalfani
دانشگاه بوعلی سینا همدان
author
Zahra
Raisi
دانشگاه بوعلی سینا
author
text
article
2013
per
Patellofemoral pain syndrome) PFPS) is one of the most common knee injuries at a young age and is more common in women. Because of pain, muscle weakness and proprioception loss of in knee, these people have a deficit balance. The purpose of this study was Comparison of Land-based physical therapy with Aquatic physical therapy to improvement pain, physical function, static and dynamic balance in patient with PFPS. In this present quasi-experimental study twenty patients with PFPS participated and were divided into two groups: physical therapy on land and water. Subjects in both groups performed three sessions of exercise therapy per week for 8 weeks. In the beginning and at the end of the period, the patients' pain, function, static and dynamic balance respectively was assessed by visual analogue scale, kujala score, sharpend Romberg and star excursion balance test. Data was analyzed using SPSS (version 18) at a significance level of (P ≤ 0.05). In this study, pain, function, static and dynamic balance scores of the both groups significantly improved after the exercise period (P ≤ 0.05). However, there was no significant difference of data between the two groups in pain, function, static and dynamic balance (P ≥ 0.05). The results showed that physical therapy in water and land can be used as a useful and effective method to reduce pain, improve function, static and dynamic balance of PFPS patients. Although the results did not show statistically significant differences between the two groups the difference between two groups in the mean percentage change indicates that the clinical effect of exercise in water is higher than the land. According to these results aquatic physical therapy is recommended as an effective method for the treatment of patients with patellofemoral pain syndrome.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
91
108
https://smj.ssrc.ac.ir/article_257_e442accd6acae7a97d3a1fa7641c5de4.pdf
Investigate Kick Speed Through to Compare the Biomechanical Characteristics of the Knee Joint in Low Drive and High Drive Soccer Instep Kick
Mostafa
Lotf'alyian
دانشگاه اصفهان
author
Shahram
Lenjan nejadidan
دانشگاه اصفهان
author
Hossein
Mojtahedi
دانشکده علوم ورزشی دانشگاه اصفهان
author
text
article
2013
per
The aims of this study were to examine the release speed of the ball in low drive and high drive soccer instep kick and investigated in relationship between ball speed and biomechanical difference observed during the kicking action. Six skilled soccer players performed low drive and high drive kick with preferred leg. In order to calculate the knee joints kinematic parameters and kicks velocity, five markers attached to anatomical points of the foot and their movements were filmed at 240 Hz. In addition, during subject performance, by surface electrodes, Electromyography variables of the quadriceps muscles were calculated. The results indicate that there was a significant difference in ball speed between low drive and high drive instep kick. Also in angular velocity of the knee joint, we have seen a significant difference in two types of kick. But there were no significant difference between two kicks in quadriceps muscles electromyography (p = 0/11). In a nutshell there are several factors that influence ball speed, including sequence of movement, joints range of motion and muscles activation. In this study sequence of motion and range of the motion are most effective parameters to create difference between two kicks.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
109
122
https://smj.ssrc.ac.ir/article_260_a941c501334656c2e9ac143284f71078.pdf
Effect of Different Sprint Start Techniques on Lower- limb Stiffness in Sprint Runners
Mansour
Esalmi
دانشگاه مازندران
author
Effat
Hosseinzadeh
دانشگاه مازندران
author
text
article
2013
per
Join angle of motion and muscle lever arms can be changed in different sprint start techniques. These changes could affect on leg and joint stiffness. The purpose of current study was to test the effect of three different sprint start techniques, (long, medium and short) on lower-limb stiffness. 15 runners (age of 24 ± 3 years; height of 170 ± 10.5 cm; weight of 75 ± 7.5 Kg) were selected in this study. A camera (200 Hz; SIMI) and a force plate (1000 Hz; Kistler) were used to collect marker coordination and ground reaction forces, respectively. Based on mass-spring model, leg stiffness was calculated dividing peak ground reaction force by the leg length. Joint stiffness was also estimated dividing the muscle moment of force by joint angular displacement. leg stiffness significantly different among three starting techniques (P< 0.001). Mean of leg stiffness in the long start technique was 16.8 % and 48% higher than medium and short, respectively. Ankle and knee joints stiffness were significantly higher in long starting technique in compared to two other techniques (p< 0.001). Lower limb stiffness could be altered by changing starting technique from long to short, in 100 meter sprint running. Therefore, stiffness could be an important factor in runners' record and should be considered in training program.
Studies in Sport Medicine
Sport Sciences Research Institute
2322-1658
5
v.
13
no.
2013
123
136
https://smj.ssrc.ac.ir/article_262_9d8c95570a44b9769305767cf676622c.pdf