نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I
نویسندگان
1 گروه رفتارحرکتی، دانشکده علوم ورزشی،واحد اصفهان (خوراسگان) ،دانشگاه آزاد اسلامی،اصفهان، ایران.
2 گروه رفتارحرکتی ، دانشکده علوم ورزشی ،واحد اصفهان (خوراسگان) ،دانشگاه آزاد اسلامی،اصفهان، ایران.
3 گروه رفتارحرکتی ، دانشکده علوم ورزشی،واحد اصفهان (خوراسگان) ، دانشگاه آزاد اسلامی،اصفهان، ایران .
4 گروه رفتارحرکتی ، دانشکده علوم ورزشی،واحد اصفهان (خوراسگان) ،دانشگاه آزاد اسلامی،اصفهان، ایران.
چکیده
مقدمه: به‌نظر می‌رسد که تحریک جریان مستقیم فراجمجمه‌ای (tDCS) مخچه در مقایسه با سایر نواحی مغز، ناحیة مؤثری در بهبود تعادل افراد مسن است؛ بنابراین تحقیق حاضر با هدف مقایسة اثر tDCS مخچه و DLPFC بر تعادل ایستای سالمندان مرد انجام گرفت.
روش پژوهش: در این تحقیق نیمه‌تجربی با طرح پیش‌آزمون-پس‌آزمون، از بین سالمندان مرد با دامنة سنی 60 تا 80 سال، 60 سالمند سالم به‌صورت داوطلبانه برای شرکت در پژوهش انتخاب شدند و به‌صورت تصادفی در چهار گروه 15 نفری مداخله tDCS مخچه، tDCS قشر جلوی مغزی جانبی پشتی چپ (DLPFC)، tDCS ساختگی مخچه و tDCS ساختگی DLPFC قرار گرفتند. شرکت‌کنندگان در مرحلة پیش‌آزمون و پس‌آزمون در 3 کوشش 30 ثانیه‌ی اقدام به ایستادن روی صفحة نیرو کردند. در مرحلة مداخله، که به مدت دو هفته و هر هفته 5 جلسة متوالی و هر جلسه 20 دقیقه به طول انجام یافت، تحریک مربوط به هر گروه انجام گرفت. داده‌ها به روش تحلیل کوواریانس تک‌متغیری تحلیل شد.
یافته‌ها: نتایج پژوهش حاضر نشان داد که تحریک tDCS مخچه و DLPFC بر تعادل ایستای (جابه‌جایی قدامی- خلفی و مرکزی- جانبی مرکز فشار) مردان سالمند تأثیر معنا‌داری دارد (0/05>P). اما بین tDCS مخچه و DLPFC در تعادل ایستای سالمندان مرد تفاوت معنا‌داری وجود ندارد (0/05<P).
نتیجه‌گیری: با توجه به نتایج پژوهش حاضر به مربیان و متخصصان سالمندی پیشنهاد می‌شود که از مزیت‌های tDCS مخچه و DLPFC در بهبود تعادل ایستای سالمندان مرد بهره گیرند.
کلیدواژه‌ها
عنوان مقاله [English]
Comparing the Effect of Transcranial Direct Current Stimulation of Cerebellum and Dorsolateral Prefrontal Cortex on Static Balance of Elderly Men
نویسندگان [English]
- Muthanna Kadhim Jasim Al-Graee 1
- Farzaneh Davari 2
- Mazin hadi kzar Altaie 3
- Zohreh Meshkati 4
1 Department of Motor Behavior, Faculty of Sport Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
2 Department of Motor Behavior, Faculty of Sport Sciences , Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
3 Department of Motor Behavior, Faculty of Sport Sciences , Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan , Iran.
4 Department of Motor Behavior , Faculty of Sport Sciences , Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
چکیده [English]
Introduction: Transcranial direct current stimulation (tDCS) has gained attention as a safe, non-invasive neuromodulation technique for enhancing motor and cognitive functions in older adults. Among various brain regions, cerebellar stimulation appears particularly effective in improving postural control and static balance. This study aimed to compare the effects of tDCS applied over the cerebellum and the dorsolateral prefrontal cortex (DLPFC) on the static balance of elderly men.
Methods: In this semi-experimental study with a pretest-posttest design, 60 healthy elderly men aged 60 to 80 years from Ahvaz voluntarily participated and were randomly assigned to four groups: cerebellar tDCS, left DLPFC tDCS, sham cerebellar tDCS, and sham DLPFC tDCS (15 participants each). Static balance was evaluated using a force plate device, during which participants completed three 30-second trials of quiet standing in both the pretest and posttest stages. The intervention consisted of 10 sessions over two weeks (five sessions per week), with each tDCS session lasting 20 minutes. Data were analyzed using one-way analysis of covariance (ANCOVA).
Results: The findings indicated that both cerebellar and DLPFC tDCS significantly improved static balance by reducing center of pressure displacement in anterior-posterior and medial-lateral directions (p<0.05). However, no statistically significant difference was observed between the effects of cerebellar and DLPFC stimulation (p>0.05).
Conclusion: Based on these results, both cerebellar and DLPFC tDCS protocols can be considered effective interventions for enhancing static balance in elderly men. Health professionals and specialists are encouraged to include these approaches in balance rehabilitation programs for older adults.
کلیدواژه‌ها [English]
- Noninvasive Brain Stimulation
- tDCS
- Cerebellum
- dlPFC
- Balance
- Elderly
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