رحمان شیخ حسینی

رحمان شیخ حسینی

مطالب
ترتیب بر اساس: جدیدترینپربازدیدترین

فیلترهای جستجو: فیلتری انتخاب نشده است.
نمایش ۱ تا ۸ مورد از کل ۸ مورد.
۱.

تأثیر تمرینات قدرتی استقامتی فزاینده و تحریک الکتریکی - بر قدرت عضلانی و پارامترهای الکترومیوگرافی سطحی در بازیکنان والیبال مبتلا به سندرم عضله تحت خاری(مقاله علمی وزارت علوم)

نویسنده:
منبع: پژوهش در طب ورزشی و فنآوری سال دوم بهار و تابستان ۱۳۹۱ شماره ۳

کلیدواژه‌ها: الکترومیوگرافی سطحی تحریک الکتریکی ورزشکاران تمرین درمانی سندرم عضله تحت خاری حداکثر قدرت ایزومتریک

حوزه‌های تخصصی:
  1. حوزه‌های تخصصی تربیت بدنی فیزیولوژی ورزشی
  2. حوزه‌های تخصصی تربیت بدنی فیزیولوژی ورزشی عصبی ـ عضلانی
تعداد بازدید : ۱۸۰۲ تعداد دانلود : ۵۹۰
در ورزشهایی مانند هندبال، تنیس و والیبال فرد نیاز دارد نیروی زیادی را در بالای شانه اعمال کند. در چنین ورزشهایی ورزشکاران در معر ضایعات استفاده بیش از حد قرار دارند. سندرم عضله تحت خاری به مفهوم ضعف و آتروفی بدون درد این عضله است که به دنبال نوروپاتی عوب فوق کتفی به وجود میآید. هدف این تحقین بررسی اثر شیوه تمرینی کوتاه مدت قدرتی استقامتی فزاینده و تحریک - الکتریکی بر قدرت و پارامترهای الکترومیوگرافی عضله تحت خاری است. 21 بازیکن والیبال مبتلا به سندرم عضله تحت خاری به طور توادفی به دو گروه تمرینات قدرتی - 13/1±7/ 211 سانتیمتر، وزن 1 /3±1/ 11 سال، قد 6 /1±3/ استقامتی فزاینده ) 6 نفر، میانگین سنی 1 3 سال( و تحریک /11±2/ 1 و سابقه عضویت در تیم ملی 7 /1±1/ کیلوگرم، سابقه ورزش والیبال 0 16 کیلوگرم، /1±6/ 211 سانتیمتر، وزن 1 /0±2/ 11 سال، قد 0 /1±1/ الکتریکی ) 6 نفر، میانگین سنی 0 1 سال( تقسیم شدند. 15 نفر از /3±1/ 1 و سابقه عضویت در تیم ملی 1 /0± سابقه ورزش والیبال 1 10 سانتیمتر، وزن /6±3/ 10 سال، قد 1 /2±1/ بازیکنان سالم نیز به عنوان گروه کنترل )میانگین سنی 1 3 سال( در /1±1/ 1 سال و سابقه عضویت در تیم ملی 3 ±3/ 10/6±7/2 کیلوگرم، سابقه ورزش والیبال 1 نیر گرفته شدند. مداخلات درمانی به مدت 1 هفته انجام شد. الکترومیوگرافی سطحی عضلات تحت خاری و گرد کوچک و حداکثر قدرت ایزومتریک عضلات چرخ دهنده خارجی قبل و بعد از مداخلات اندازهگیری شد. تحلیل دادهها با استفاده از آزمون t همبسته و تحلیل واریانس یکطرفه در سط اطمینان 10 درصد ) 5950 P< ( انجام شد.پس از هشت هفته، حداکثر قدرت ایزومتریک عضلات چرخدهنده خارجی در هر دو گروه تاربی افزایش معنیداری نشان داد، ولی در فاکتورهای IEMG و RMSEMG تغییر معنیداری مشاهده نشد.طبن یافتههای این تحقین، تمرینات قدرتی استقامتی فزاینده و تحریک الکتریکی باعث افزایش حداکثر - قدرت ایزومتریک عضلات چرخدهنده خارجی بازو میشوند. ولی هر دو روش درمانی تأثیری بر پارامترهای الکترومیوگرافی عضلات تحت کتفی و گرد کوچک ندارند. به نیر میرسد نمیتوان از الکترومیوگرافی سطحی برای تعیین اثر این پروتکلها بر عضلات فوق استفاده کرد
۳.

Anticipatory Electromyographic Activity and Onset Time in Selected Muscles of Lower Limb Between the Active and Inactive Old Women(مقاله علمی وزارت علوم)

نویسنده:
منبع: Journal of Exercise Science and Medicine, Volume ۱۱, Issue ۲,۲۰۱۹ 89 - 96

کلیدواژه‌ها: Electromyography Aged exercise Muscles Women

حوزه‌های تخصصی:
تعداد بازدید : ۵۳۱ تعداد دانلود : ۱۹۶
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.
۴.

The Use of Technology in Quarantine: A Way to Maintain and Promote Physical Health

نویسنده:
منبع: New Approaches in Sport Sciences, Volume ۲, Issue ۴, Summer and Autumn ۲۰۲۰ 1 - 14

کلیدواژه‌ها: Exergames physical fitness COVID-19 Technology quarantine

حوزه‌های تخصصی:
تعداد بازدید : ۳۸۳ تعداد دانلود : ۲۲۰
Background: Along with the outbreak of coronavirus and quarantine practices in many countries, physical activities have certainly been severely restricted. The purpose of this review was to investigate the role of technology in maintaining and improving physical health. Method: For this systematic review study, the research method in this study included searching on PubMed and Google Scholar databases. Articles written in English and Persian in peer reviewed journals that examining the effect of electronic games and virtual reality on physical fitness were selected for analysis. Then, the eligible studies classifieds based on the study population ages. Results: Of 12563 studies found, 14 studies were eligible to enter the study. Research has shown that the use of technology significantly affect gait, balance, strength, flexibility, and mental functioning of the elderly, as well as balance, strength, endurance, and cognitive abilities in adults and children's physical endurance. Conclusions: According to studies under review, the use of technology has a significant effect on improving and maintaining the physical and mental fitness of people in different ages. So, we can suggest using exergame and virtual reality exercises as a possible intervention to promote and maintain physical and mental fitness in quarantine.
۵.

The Effectiveness of Exercise Interventions in Physical and Psychological Conditions in Iranian Veterans: A Systematic Review

نویسنده:
منبع: New Approaches in Sport Sciences, Volume ۱, Issue ۱, Winter and Spring ۲۰۱۹. 5 - 20

کلیدواژه‌ها: veterans exercise Health psychology

حوزه‌های تخصصی:
تعداد بازدید : ۳۲۲ تعداد دانلود : ۲۷۹
Purpose: The purpose of this review was to investigate the effects of exercise interventions on physical and psychological health in Iranian war veterans. Method: The search strategy for this review consisted of an electronic database search of full text papers in Google Scholar and SID.ir databases.10 studies met the eligibility criteria, all of them interventional in nature. The studies were analyzed separately according to the specific areas of study. Results: The studies demonstrate that exercise interventions have a significant impact on physical health, psychological health, and quality of life in Iranian war veterans. However, inconsistencies were generally apparent between some of the results. Conclusions: Exercise interventions have positive effects on physical and psychological health in Iranian war veterans. More investigation is needed to identify optimal exercise protocols for different groups of veterans.
۶.

The effect of Pilates and TRX exercises on the pelvic tilt angle of females with excessive anterior pelvic tilt(مقاله علمی وزارت علوم)

نویسنده:
منبع: Sport Sciences and Health Research, Volume ۱۳, Issue ۲, ۲۰۲۱ 127-137

کلیدواژه‌ها: exercise Pelvis Pilates Posture TRX

حوزه‌های تخصصی:
تعداد بازدید : ۲۸۶ تعداد دانلود : ۱۹۹
Background: Excessive anterior pelvic tilt (APT) is a common condition that can lead to musculoskeletal problems in females. Pilates and TRX exercises have been suggested as potential interventions to address APT. Aim: The present study aimed to investigate the effect of these exercises on the pelvic tilt angle (PTA) in females with excessive APT. Materials and Methods: The current study utilized a pre-test post-test design and was conducted as a quasi-experimental study. Twenty females between the ages of 35 and 55 were purposefully selected to participate in the study. The pelvic tilt angle (PTA) was measured using an inclinometer. The study participants were randomly assigned to the two groups. Then 8-week TRX and Pilates exercises were carried out. The data was analyzed by paired-sample t-test and analysis of covariance (ANCOVA) at a significance level of P <0.05 using SPSS V. 16. Results: The results showed a significant decrease in PTA in both Pilates (t(9)= 16.74, P = 0.001) and TRX (t(9)= 9.73, P = 0.001) exercises groups. But, there was no a significant difference between the two groups (F(1, 17)=0.01, P = 0.922, partial eta squared= 0.001). Conclusion: The results of the study demonstrated a significant decrease in the pelvic tilt angle (PTA) of participants with excessive anterior pelvic tilt (APT) following 8 weeks of Pilates and TRX exercises. These findings highlight the importance of these exercise interventions in correcting postural deformities.
۷.

The relationship between working posture and musculoskeletal disorders among electrical industrial workers in Isfahan(مقاله علمی وزارت علوم)

نویسنده:
منبع: Sport Sciences and Health Research, Volume ۱۵, Issue ۱,۲۰۲۳ 127 - 136

کلیدواژه‌ها: Musculoskeletal Disorders Photogrammetry Posture

حوزه‌های تخصصی:
تعداد بازدید : ۱۵۸ تعداد دانلود : ۱۳۲
Background : Work-related musculoskeletal disorder is the most important occupational disease that threatens the health of employees. Aim: The aim of this study was to investigate the relationship between workers' posture and musculoskeletal disorders. Materials and Methods: Eighty-two male and female workers working in a home appliance factory participated in this cross-sectional study. Musculoskeletal disorders were investigated using Nordic questionnaires. Posture evaluation was performed to measure the angles of forward head, rounded shoulders, and thoracic kyphosis using photogrammetry. Craniovertebral, shoulder, and thoracic kyphosis angles were photographed during the work and then measured using ImageJ software. Data analysis was done using SPSS 26 and Spearman's correlation test at a significance level of 0.05. Results : A significant relationship between the craniovertebral angle and musculoskeletal disorders in the last twelve months was observed in the cervical region ( P <0.001). Also, a significant relationship was observed between the kyphosis angle and musculoskeletal disorders in the last twelve months in the upper back and lower back ( P <0.001). Conclusion : The results showed that the workers’ posture during work is correlated with the prevalence of musculoskeletal disorders. Therefore, it is suggested to pay attention to ergonomic principles during work to maintain and improve the physical health of workers.
۸.

Reliability and Concurrent Validity of a Clinometer+ Bubble Smartphone Application to Assess Hamstring Muscle Length

نویسنده:
منبع: New Approaches in Exercise Physiology, Volume ۵, Issue ۱۰, March ۲۰۲۳ 22 - 42

کلیدواژه‌ها: flexibility Reliability Validity Smartphone measurement

حوزه‌های تخصصی:
تعداد بازدید : ۲ تعداد دانلود : ۳
Purpose: Muscle flexibility is a component of physical fitness. Using traditional tools in muscle length evaluation tests creates challenges. Therefore, the use of smartphones and health-related software as an alternative method has become widespread. This study aimed to investigate smartphones' intra- and inter-rater reliability and validity for measuring hamstring muscle length. Method: In a blinded study design, two researchers measured hamstring flexibility through four types of tests on each of the 22 asymptomatic participants with a total of 44 lower limbs. The measurements were compared between the traditional goniometer method and the practical smartphone application method. The intraclass correlation coefficient (ICC) was used to evaluate the reliability of each smartphone measurement, and Bland-Altman analysis was used to check the measurement errors. The validity of the two methods was also investigated. Results: Intra- and inter-rater reliability (ICC≥0.8) were good to almost perfect. In intra-rater reliability, PSLR angle showed consistent imprecision; other tests were free of systematic error and measurement error. The inter-rater reliability revealed a constant error in the right leg's PKE angle. A good to excellent correlation (r = 0.817–0.699) was observed in all the measured values, indicating the two methods' validity. Conclusion: These findings support from intra- and inter-rater reliability and validity of both instruments when measuring hamstring muscle length.

کلیدواژه‌های مرتبط

پدیدآورندگان همکار

تبلیغات

پالایش نتایج جستجو

تعداد نتایج در یک صفحه:

درجه علمی

مجله

سال

حوزه تخصصی

زبان