بررسی میزان وابستگی منابع توجهی و بینایی به کنترل تعادل در بیماران با وضعیت جلوآمده سر

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کمیته پژوهشی دانشجویان، دانشجوی کارشناسی ارشد فیزیوتراپی، گروه فیزیوتراپی، دانشکده علوم توانبخشی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

2 دکترای تخصصی فیزیوتراپی، استاد گروه فیزیوتراپی، دانشکده علوم توانبخشی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

3 کارشناسی ارشد بیومکانیک،دانشکده مهندسی مکانیک، دانشگاه مهندسی شریف، تهران، ایران

4 استاد آمار زیستی، گروه علوم پایه، دانشکده علوم توانبخشی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

چکیده

مقدمه و اهداف
وضعیت ناصحیح سر در افراد با وضعیت جلوآمده سر می‌تواند کنترل تعادل وابسته به منابع توجهی و بینایی را تحت تأثیر قرار دهد. هدف مطالعه حاضر بررسی اثر تکلیف ذهنی و حس بینایی بر ثبات ایستا در افراد با وضعیت جلوآمده سر در مقایسه با افراد سالم بود.
مواد و روش ­ها
17 نفر با وضعیت جلوآمده سر و 15 فرد سالم در تحقیق حاضر شرکت کردند. پارامترهای مرکز فشار شامل انحراف معیار جابه‌جایی و سرعت در جهت قدامی-خلفی، داخلی-خارجی، متوسط سرعت، ناحیه اطمینان بیضوی 95%، محدوده جابه‌جایی در جهت قدامی-خلفی و داخلی-خارجی است. تکلیف تعادلی در هشت وضعیت شامل دو وضعیت ذهنی (در حال انجام تکلیف ذهنی و بدون آن)، دو حالت دشواری تکلیف تعادلی (ایستاده روی یک‌پا و دوپا) و دو وضعیت بینایی (چشمان باز و بسته) در دو گروه ارزیابی شد.
یافته­ ها
یافته ­ها نشان داد که اثر اصلی گروه و وضعیت توجهی روی هیچ‌یک از متغیرهای وابسته معنادار نبود. اثر اصلی وضعیت‌های بینایی و تعادلی بر روی همه‌ی متغیرهای وابسته، اثر معنادار قابل‌توجهی را نشان داد (05/0>P). اثر متقابل گروه و سایر عوامل مثل بینایی، دشواری تعادل و وضعیت‌های شناختی روی هیچ‌یک از متغیرهای مرکز فشار، تفاوت معناداری را نشان نداد. اثر متقابل همه‌ی عوامل باهم روی یک عامل، اثر قابل‌توجهی را روی بعضی از پارامترهای نوسان تعادلی نشان داد.
نتیجه­ گیری
نتایج مطالعه حاضر نشان داد که وابستگی کنترل تعادل به وضعیت بینایی در افراد با وضعیت جلوآمده سر نسبت به افراد عادی متفاوت نمی­باشد و نیاز توجه در این افراد، هنگامی ‌که سختی تکلیف تعادل با بارشناختی هم‌زمان می‌شد، بالاتر می­باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Attention and Visual Demands of Postural Control in Patients with Forward Head Posture

نویسندگان [English]

  • seyed hashem Taheri 1
  • Khosro Khademi-Kalantari 2
  • Mehrdad Davoudi 3
  • Alireza Akbarzadeh Baghban 4
1 Student Research Committee. MSc Student of Physiotherapy, Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Professor, Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3 Laboratory of Wearable Technologies and Neuromusculoskeletal Research, Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
4 Professor, Department of Basic Sciences, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
چکیده [English]

Background and Aims: The wrong posture of head in patients with Forward Head Posture (FHP) could affect their visual and attention demands of postural control. The present study was carried out to investigate the effects of cognitive loading and visual occlusion on the static stability in patients with FHP compared to healthy participants.
Materials and Methods: A total of 17 individuals with FHP and 15 healthy people participated in the study. The center of pressure parameters were evaluated, including the standard deviation of displacement and velocity in anteroposterior and mediolateral directions, mean velocity, 95% Confidence Ellipse Area, and displacement range in anteroposterior and mediolateral directions. The postural task was conducted in eight conditions, two cognitive conditions (with and without cognition task), two postural task difficulties (standing on one foot and both feet), and two visual conditions (open and closed eyes) in both groups.
Results: The main effects of group and cognitive conditions had no significant effect on almost none of the dependent variables, but the main effects of visual and postural conditions showed significant effects on all the dependent variables (p<0.05). The interaction effects of group and other factors, including visual, postural difficulties, and cognitive conditions, showed no significant effect on any of the center of pressure variables. On the other hand, the interaction of all factors together showed significant effects in some of the postural sway parameters.
Conclusion: The visual demand of postural control is not different in the people with forward head posture. The attention demand in these individuals, however, is higher when a difficult postural task is coincided with a cognitive task.

کلیدواژه‌ها [English]

  • Dual-Task
  • static stability
  • Forward Head Posture
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