تنظیمات پاسچرال پیش بینانه عضلات تنه در حرکت فلکسیون یکطرفه اندام فوقانی

دواریان, ساناز; معروفی, نادر; ابراهیمی تکامجانی, اسماعیل; فرهمند, فرزام

doi:10.22037/jrm.2013.1100130

تنظیمات پاسچرال پیش بینانه عضلات تنه در حرکت فلکسیون یکطرفه اندام فوقانی

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ 1. استادیار فیزیوتراپی، دانشکده علوم توانبخشی، دانشگاه علوم پزشکی شهید بهشتی

² 2. دانشیار فیزیوتراپی، دانشکده توانبخشی، دانشگاه علوم پزشکی ایران

³ 3. استاد فیزیوتراپی، دانشکده توانبخشی، دانشگاه علوم پزشکی ایران

⁴ 4. استاد بیومکانیک، دانشکده مهندسی مکانیک، دانشگاه صنعتی شریف

10.22037/jrm.2013.1100130

چکیده

مقدمه و اهداف
تناقضات در مورد فعالیت پیش بینانه عضله عرضی شکمی و وجود مطالعات محدود در زمینه فعالیت عضلات تنه در دو سمت ستون فقرات حین حرکت یک طرفه اندام فوقانی محققان این مطالعه را بر آن داشت تا تحقیقی را به منظور ارزیابی فعالیت پیش بینانه عضلات تنه بصورت دو طرفه حین فلکسیون یکطرفه اندام فوقانی انجام دهند.
مواد و روش ها
18 فرد سالم در این مطالعه شرکت کردند. فعالیت الکترومیوگرافی عضله دلتوئید قدامی راست و همچنین عضلات عرضی شکمی / مایل داخلی، مالتی فیدوس سطحی کمری و ارکتوراسپاین کمری دوطرف حین حرکت فلکسیون یکطرفه اندام فوقانی راست با حداکثر سرعت در پاسخ به یک سیگنال نوری ثبت گردید و داده های زمان تأخیر شروع فعالیت پیش بینانه و شدت فعالیت پیش بینانه عضلات تنه مورد تجزیه و تحلیل آماری قرار گرفت.
یافته ها
عضله عرضی شکمی / مایل داخلی سمت مقابل، اولین عضله ای بود که در حین حرکت فلکسیون یکطرفه اندام فوقانی بصورت پیش بینانه وارد عمل شد. عضله عرضی شکمی / مایل داخلی همان سمت دیرتر از تمامی عضلات تنه وارد عمل گردید (0005/0>P). علاوه براین، فعالیت پیش بینانه عضله عرضی شکمی / مایل داخلی همان سمت بطور معنی داری کمتر از سایر عضلات تنه بود (0005/0>P). تفاوت معنی داری بین سایر عضلات تنه در زمان تأخیر شروع و شدت فعالیت پیش بینانه مشاهده نشد (05/0<P).
نتیجه گیری
فعالیت پیش بینانه نرمال حین فلکسیون یک طرفه اندام فوقانی، هم انقباضی پیش بینانه دو طرفه عضله عرضی شکمی نمی باشد. از آنجاکه فعالیت همزمان دوطرفه این عضله به عنوان یکی از تمرینات مهم درمانی در بیماران کمردرد مزمن مکانیکی مطرح می باشد، پیشنهاد می شود که قبل از توصیه به تجویز این تمرین مطالعات بیشتری در زمینه فعالیت عضله عرضی شکمی در افراد سالم صورت گیرد تا در زمینه الگوی نرمال فعالیت عضلانی عرضی شکمی توافق عمومی حاصل گردد.

کلیدواژه‌ها

عنوان مقاله [English]

Anticipatory Postural Adjustments of Trunk Muscles during Unilateral Arm Flexion

نویسندگان [English]

Sanaz Davarian ¹
Nader Maroufi ²
Esmaeil Ebrahimi Takamjani ³
Farzam Farahmand ⁴

¹ 1. Assistant Professor of Physical Therapy, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

² 2. Associate Professor of Physical Therapy, Faculty of Rehabilitation, Iran University of Medical Sciences, Tehran, Iran.

³ 3. Professor of Physical Therapy, Faculty of Rehabilitation, Iran University of Medical Sciences, Tehran, Iran.

⁴ 4. Professor of Biomechanics, Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.

چکیده [English]

Background and Aim: Controversy regarding feedforward activation of transversus abdominis and limited studies regarding bilateral activation of trunk muscles during unilateral arm movement lead us to perform a study to evaluate bilateral anticipatory activity of trunk muscles during unilateral arm flexion.

Materials and Methods: Eighteen healthy subjects participated in this study. The electromyographic activity of the right Anterior Deltoid (AD) and bilateral trunk muscles including the Transversus Abdominis/Obliquus Internus (TA/OI), Superficial Lumbar Multifidus (SLM) and Lumbar Erector Spinae (LES) during rapid flexion of the right upper limb in response to a visual stimulus was recorded and the onset latency and anticipatory activity of the recorded trunk muscles were calculated.

Results: The cotralateral TA/OI was the first muscle activated in anticipation of the right arm flexion. The ipsilateral TA/OI activated significantly later than all other trunk muscles (P<0.0005). In addition, anticipatory activity of the ipsilateral TA/OI was significantly lower than all other trunk muscles (P<0.0005). There was no significant difference in either onset latency or anticipatory activity among other trunk muscles (P>0.05).

Conclusion: Normal anticipatory activity during unilateral arm flexion was not bilateral anticipatory co-activation of TA/OI. Further surveys are required to detect normal muscle activation pattern in healthy subjects prior to prescribing bilateral activation training of Transversus Abdominis for subjects with chronic low back pain.

Key words:

کلیدواژه‌ها [English]

Anticipatory Postural Adjustments
Motor Control
Low Back
Internal Perturbation

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