The Comparison of Dynamic and Static Footprint Parameters in Overweight Children
amirhosien
Barati
author
Reza
Azimi
author
Hosien
Nabavi nik
author
Mihsen
Ali Darchini Maragheh
author
text
article
2013
eng
Foot structure like other features of human body is various among different age groups and any changes in foot structure influence the function of other joint. Hence, many researchers are trying to prove the relationship between foot role and its pathology. The present study tried to compare footprint parameters (footprint angle, Staheli’s index, Chippaux – Smirak index and arch index) in the static and dynamic positions in overweight children. In this quasi-experimental study, 12 male overweight children (age range 10-12) were randomly selected. To measure the footprint parameters in two positions of static and dynamic, an ink - paper system was used. Then, ImageJ software was used to measure footprint angle, Staheli’s index, Chippaux – Smirak index and arch index. Mean and standard deviation were used to describe the data and the independent t test was used to compare the parameters. The findings showed no significant difference among angular parameters (P>0.05), but a significant difference in linear parameter between the static and dynamic positions (P
Sport Sciences and Health Research
University of Tehran Press
2981-0205
4
v.
2
no.
2013
5
18
https://sshr.ut.ac.ir/article_30056_08ecb8854d65ca9fe0798aab47d62061.pdf
dx.doi.org/10.22059/jsmed.2013.30056
Incidence of Acute Injuires of Iranian Professional Dragon Boat Female Athletes
Efat
Bambaechi
author
Kimiya
Mahdaviyani
author
Ali Bagher
Nazariyan
author
text
article
2013
eng
هدف پژوهش حاضر بررسی میزان شیوع آسیب های حاد ورزشکاران حرفه ای دراگون بوت زن ایران بود. با استفاده از برگة گزارش آسیب، اطلاعات مربوط به شیوع، علل، زمان بروز و نوع آسیب 50 نفر از قایقرانان زن حرف ای ایران (میانگین ± انحراف معیار؛ سن 9/2 ± 6/22 سال، قد 160 سانتی متر و وزن 9/5 ± 58 کیلوگرم) براساس مواد شرکت کننده و محل نشستن پاروزنان در قایق مربوطه جمع آوری شد. از آزمون کای اسکور برای تجزیه و تحلیل داده ها استفاده شد. نتایج نشان داد که گرفتگی عضلانی شایع ترین آسیب ها و کمترین آنها مربوط به دررفتگی و متورم شدن کیسه های زلالی بود (هر کدام 8/0 درصد) و تفاوت بین آنها از لحاظ آماری معنادار بود (05/0 P
Sport Sciences and Health Research
University of Tehran Press
2981-0205
4
v.
2
no.
2013
19
30
https://sshr.ut.ac.ir/article_30057_c99c55f88d2f66ed50c3befa67611476.pdf
dx.doi.org/10.22059/jsmed.2013.30057
The Effects of a Selective Corrective Program on the Scapula and Shoulder Joint Posture in Girls with Rounded Shoulder
Mahtab
Najafi
author
Naser
Behpoor
author
text
article
2013
eng
The scapula influences shoulder performance. In fact, scapula posture has a direct relationship with scapula stability and muscular power. The purpose of this research was to determine the effect of a training program on rounded shoulder abnormality (RS) and scapula posture in female students. A posture grid was used to select the girls with rounded shoulders (RS); 20 students with RS (10.78±0.7 years, 143.7±5.37 cm, 34.5±4.93 Kg) were randomly selected and completed the consent form. Rounded shoulder was measured by double square and inter-scapula distance by Vernier caliper. According to shoulder posture (the shoulder distance from the wall), subjects were divided into two control and experimental groups. To determine the strength of scapula stabilizers, lateral scapular test (LSST) was used. Experimental subjects performed the treatment protocol including stretch-strength training for six weeks, three days a week. Data analysis showed that rounded shoulder significantly decreased by 12% (p= 0.008) in the experimental group, but there was no significant difference in the control group (p=0.462). Inter-scapula distance in the experimental group significantly decreased by 9% (p=0.001), but there was no significant difference in the control group (p=0.177). The result of symmetry of scapula bones in zero and 45 degree angles in the experimental group was significant (p=0.028). The results showed that the selected corrective exercises improved rounded shoulder posture, distance and symmetry of scapula bones (the increase of strength of scapula stabilizers) of girls aged between 10 and 12 with RS.
Sport Sciences and Health Research
University of Tehran Press
2981-0205
4
v.
2
no.
2013
31
47
https://sshr.ut.ac.ir/article_30058_c5ef4cc191632a79209e00a55935dbd1.pdf
dx.doi.org/10.22059/jsmed.2013.30058
The Effect of Patellofemoral Pain Syndrome in Athletes on Electromyographic Activity Ratio of Patellar Stability Muscles during Maximum Voluntary Isometric Contraction
Farhad
Rezazadeh
author
Hooman
Minoonejad
author
Shirin
Aalie
author
Aidin
Valizadeh
author
text
article
2013
eng
Patellofemoral pain syndrome is a common condition athletes suffer from. One of the predictive factors of this syndrome is reduced activity ratio of vastus medialis oblique (VMO) to vastus lateralis (VL). The aim of this descriptive study was to compare the electromyographic activity ratio of vastus medialis oblique to vastus lateralis during maximum voluntary isometric contraction of quadratus femoris on Biodex between athletes with and without patellofemoral pain syndrome. For this purpose, 16 national team male athletes (volleyball, handball and taekwondo) with patellofemoral pain syndrome aged between 18 and 30 and 16 healthy male athletes voluntarily participated in this study. EMG activity of VMO and VL muscles were recorded by surface electrodes and telemetric EMG system on Biodex at 15, 30 and 45 degrees of knee flexion and VMO: VL EMG activity ratio was calculated. To compare muscle activity ratio between the two groups, t test was used. The results showed no significant difference in the electrical activity of VMO and VL muscles in knee flexion angles between athletes with and without patellofemorl pain syndrome (P>0.05). The EMG ratio of VMO:VL was higher than 1 in both groups, but this ratio was higher in healthy athletes. Finally, it seems that sporting activities as a preventive factor impede disturbance of electrical activity of VMO that prevent reduction of VMO: VL ratio.
Sport Sciences and Health Research
University of Tehran Press
2981-0205
4
v.
2
no.
2013
49
62
https://sshr.ut.ac.ir/article_30059_afe1b0f5cb1724451a63e2d8e47c2579.pdf
dx.doi.org/10.22059/jsmed.2013.30059
The Effect of Core Stability Training on Y Balance Test Components in Indoor Soccer Players
ebrahim
Mohammad Ali Nasab
author
mansour
sahebozamani
author
text
article
2013
eng
The aim of this study was to investigate the effects of core stability training on the Y balance test components in indoor soccer players of Mazandaran University. 24 subjects (age 22.67 yr, weight 70.12 kg, height 1.75 m and BMI 22.70) from Mazandaran University were voluntarily participated and randomly divided into experimental (n=12) and control(n=12) groups. At the onset of the study, the dynamic balance was measured by Y balance test and core stability by some field core stability tests. Experimental group performed the core stability protocol three days per week for six weeks while control group did not perform any training. At the end of the protocol, dynamic balance and core stability were measured again. Independent t test was used to analyze data. The results of Y balance test showed a significant difference in anterior and posterior-interior and no significant difference in posterior-exterior components between the two groups. In addition, significant differences were observed in scores of Sorensen test, trunk flexion, right bridge and hip abduction between the two groups. It can be concluded that core stability training can improve interior and posterior-interior components of Y balance test through strengthening core stability indexes and more training should be applied in posterior-exterior components.
Sport Sciences and Health Research
University of Tehran Press
2981-0205
4
v.
2
no.
2013
63
86
https://sshr.ut.ac.ir/article_30060_6c4d07aaa247774474f861ec30a8fb9f.pdf
dx.doi.org/10.22059/jsmed.2013.30060
The Comparsion of the Electromyography of Leg Muscles and Peak Vertical Ground Reaction Forces during Single Leg Drop Landing between Men with Genu Varum Deformity and Normal Knee
Mohammadreza
Mahaki
author
seyedsadredin
shojaedin
author
Raghad
Memar
author
Mehdi
Khaleghi Nazji
author
text
article
2013
eng
The aim of this study was to compare the electromyography of leg muscles and the peak vertical ground reaction forces during single leg drop landing of men with genu varum deformity and normal knee. 26 physical education male students participated in this research, including 13 subjects with genu varum and 13 with normal knee. Electromyographic activity of some leg muscles along with the data of ground reaction forces were measured. Genu varum deformity was measured and recorded by a caliper. Subjects performed single-leg landing from 30cm height onto a force platform. Landing motions were divided into two phases: 100 ms preceding ground contact and 100 ms after ground contact (absorption phase). Independent t test was administered for the statistical analysis of data using SPSS software 16 (P?0.05). The results showed no significant difference in the activity of the soleus, medial gastrocnemius and anterior tibialis muscles during pre-landing phase ((P?0.76), (P?0.09) and (P?0.77) respectively). No significant difference was found in the activity of soleus and anterior tibialis muscles during absorption phase ((P?0.68) and (P?0.92) respectively). However, the activity of medial gastrocnemius was significantly different between the groups (P?0.04). No significant difference was found in the peak vertical ground reaction force during metatarsal contact (P?0.22). However, the peak vertical ground reaction forces in calcaneus contact (P? 0.003) between the groups were significantly different. The results showed that subjects with genu varum had lower activity in medial gastrocnemius muscle during the absorption phase of landing which may insert bigger forces into their lower extremity in comparison with normal subjects; in long-term, this may result in injury and occurrence of articular degenerative diseases.
Sport Sciences and Health Research
University of Tehran Press
2981-0205
4
v.
2
no.
2013
87
106
https://sshr.ut.ac.ir/article_30061_c7581fdedeaa748b4089cdd7f46da67a.pdf
dx.doi.org/10.22059/jsmed.2013.30061