نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکترای تخصصی، مرکز تحقیقات توانبخشی اسکلتی-عضلانی، گروه آموزشی فیزیوتراپی، دانشگاه علوم پزشکی جندی شاپور اهواز، اهواز، ایران

2 کارشناسی ارشد، مرکز تحقیقات توانبخشی اسکلتی-عضلانی، دانشگاه علوم پزشکی جندی شاپور اهواز، اهواز، ایران

3 دکترای تخصصی، دپارتمان فیزیوتراپی، دانشکده ی علوم توانبخشی، دانشگاه علوم پزشکی شیراز، شیراز، ایران

4 دکترای تخصصی، مرکز تحقیقات علوم توانبخشی، دانشگاه علوم پزشکی شیراز، شیراز، ایران

5 دکترای تخصصی، مرکز تحقیقات توانبخشی، گروه آموزشی مدیریت توانبخشی، دانشکده علوم توانبخشی، دانشگاه علوم پزشکی ایران، تهران، ایران

10.30476/smsj.2021.90245.1223

چکیده

مقدمه: مشکل تعادل در سالمندان زمانی بیشتر نمایان می شود که فرد مجبور به انجام یک تکلیف مضاعف در حین حفظ تعادل باشد. این مطالعه با هدف تعیین و مقایسه نسبت هارمونیک راه رفتن بین سالمندان ایرانی با و بدون سابقه زمین خوردن، تحت شرایط تکلیف منفرد و دوگانه انجام شد.
روش ­ها: در این مطالعه ی مشاهده ای مقطعی،۲۰ سالمند با سابقه زمین خوردن (۱۳ زن و ۷ مرد) و ۲۰ سالمند بدون سابقه ی زمین خوردن (۱۲ زن و ۸ مرد) از میان اعضای یک  مرکز بازنشستگی انتخاب و وارد مطالعه شدند. متغیر های مورد ارزیابی عبارت بودند از نسبت هارمونیک راه رفتن در شرایط تکلیف منفرد و دوگانه در جهات طرفی، عمودی و قدامی-خلفی که توسط یک شتاب سنج اندازه گیری شد.
یافته ­ها: در راه رفتن در شرایط تکلیف منفرد، تفاوت معناداری بین دو گروه در جهات طرفی، عمودی و قدامی-خلفی نسبت هارمونیک گزارش نشد. در راه رفتن با تکلیف دوگانه، نسبت هارمونیک در گروه با سابقه زمین خوردن در جهات طرفی (010/0 p =) و عمودی (32p =0/0) به طور معناداری کوچکتر از گروه بدون سابقه زمین خوردن بدست آمد، اما اختلاف بین دو گروه در جهت قدامی-خلفی نسبت هارمونیک از لحاظ آماری معنادار نبود.
نتیجه گیری: یافته های پژوهش اخیر نشان داد که راه رفتن در شرایط انجام تکالیف دوگانه می تواند به میزان قابل توجهی نسبت هارمونیک راه رفتن در جهات عمودی و طرفی را در سالمندان با سابقه زمین خوردن، تحت تاثیر قرار دهد.

کلیدواژه‌ها

عنوان مقاله [English]

A Comparison of the Gait Harmonic Ratio between Faller and Non-faller Iranian Older Adults, under Single-task and Dual-task Conditions

نویسندگان [English]

  • Shahla Zahednejad 1
  • Samira Javadpour 2
  • Alireza Motealleh 3 4
  • Reza Salehi 5

1 Ph.D., Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

2 M.Sc., Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

3 Ph.D., Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran

4 Ph.D., Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran

5 Ph.D., Rehabilitation Research Center, Department of Rehabilitation Management, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran

چکیده [English]

Introduction: Performing a secondary task while maintaining postural control can aggravate balance impairments among older individuals. The present study aimed to compare the gait harmonic ratio between faller and non-faller community-dwelling older adults.
Methods: In this cross-sectional study, 20 faller older adults (13 females and 7 males) and 20 non-faller older adults (12 females and 8 males) were recruited from the members of a retirement center. Before the trial, a medical code of ethics was granted and the written consent forms were signed by all participants. The variable, the gait harmonic ratio in medial-lateral, vertical, and anterior-posterior directions under single-task and dual-task conditions, was measured using an accelerometer.
Results: Under the single-task condition, there was no statistically significant difference between the faller and non-faller groups in any direction of gait harmonic ratio. Under the dual-task condition, the faller group revealed significantly lower harmonic ratios in medial-lateral (p < /em>=0.010) and vertical (p < /em>=0.032) directions compared to the non-faller group. However, no statistically significant difference was reported between the two groups for the anterior-posterior direction in dual-task walking.
Conclusions: The findings of the present study indicated that the medial-lateral and vertical gait harmonic ratios can considerably be affected under dual-task conditions in faller older individuals.

کلیدواژه‌ها [English]

  • Aging
  • Cognition
  • Falling
  • Gait
  • Postural Balance
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