تغییرات کینماتیکی راستای بدن ناشی از وزن، محل قرارگیری و مدت زمان کوله‌پشتی در دانش آموزان پسر 10 تا 12 سال

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشکده تربیت بدنی و علوم ورزشی، دانشگاه صتعتی شاهرود، سمنان, ایران

2 گروه روانشاسی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه علامه طباطبایی (ره)، تهران، ایران

3 گروه فیزیولوژی ورزش دانشکده علوم ورزشی، دانشگاه مازندران، بابلسر، ایران

4 گروه فیزیولوژی ورزش دانشکده علوم ورزشی دانشگاه مازندران

چکیده

مقدمه و هدف: کوله پشتی به عنوان یکی از رایجترین تجهیزات مورد استفاده کودکان و نوجوانان، از جنبه های متفاوتی چون؛ طرح و شکل، وضعیت حمل، وزن و مدت زمان حمل آن و به واسطه اثراتی که بر روی ستون فقرات و نواحی دیگر بدن دارد به عنوان یک نگرانی رو به رشد مورد توجه بسیاری از محققان سلامت بوده است. تحقیق حاضر در نظر دارد تاثیر وزن، محل قرار گیری و مدت زمان حمل کوله پشتی را  بر تغییرات کینماتیکی بدن دانش آموزان  پسر 10 تا 12 ساله مقطع ابتدایی بررسی کند.
روش شناسی: تحقیق حاضر از نوع تحقیقات نیمه تجربی بود. نمونه آماری تحقیق را 25 دانش آموز پسر  با دامنه سنی 10 تا 12 سال تشکیل دادند. متغیرهای اندازه گیری شده شامل؛ زاویه سر در سطح افق(CHA)، زاویه سر بر روی مهره های گردنی(CVA)، زاویه شانه در سطح ساجیتال(SSPA)، زاویه تنه(TA) و  زاویه اندام تحتانی(LLA) بود که از روش عکس برداری از نمای ساجیتال جهت ارزیابی میزان تغییرات کینماتیکی بدن استفاده شد. داده های گرد آوری شده توسط آزمون آماری تحلیل واریانس اندازه های تکراری تجزیه و تحلیل شد.
یافته ها: یافته های تحقیق نشان داد زمانی که کوله پشتی با وزن 15% وزن بدن حمل می شود، زوایایCHA  ،CVA و TA  به طور معنی داری تغییر می کند(p نتیجه گیری: با توجه به یافته های تحقیق می توان بیان نمود که؛ برای دانش آموزان پسر سنین 10 تا  12 سال  بهترین وزن کوله پشتی کمتر از 10% وزن بدن آنها است، بهترین محل قرارگیری کوله پشتی در ناحیه پایین ستون فقرات (L3) است و راه رفتن طولانی مدت با کوله پشتی نیز می تواند تغییرات پاسچرال مخربی را  به همراه داشته باشد.

تازه های تحقیق

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کلیدواژه‌ها


عنوان مقاله [English]

Kinematic changes of body alignment resulting from backpack weight, location and carrying duration in 10 to 12 years old boy schoolchildren

نویسندگان [English]

  • Aynollah Naderi 1
  • Fatemeh Shaabani 2
  • Fatemeh Malki 3
  • Faezeh Khosravi 4
1 Department of Health and Corrective Exercise, School of Physical Education and Sport Sciences, Shahrood University of Technology, Shahrood, Semnan, Iran
2 MَA student of Sport Psychology, School of Physical Education and Sport Sciences, Allameh Tabataba'i University, Tehran, Iran
3 Department of exercise physiology,Faculty of Sport Sciences, University of Mazandaran, Babolsar, Iran
4 Department of exercise physiology,Faculty of Sport Sciences, University of Mazandaran, Babolsar, Iran
چکیده [English]

Background & purpose: Backpack as one of the most common equipment used by children and adolescents has been to the attention of health researchers as a growing concern, because of different aspects included; design and shape, carrying position, weight, duration of transport and its effects on the spinal column. The aim of this study was to investigate the effects of weight, location and the time of carrying the backpacks on the angular variations of elementary students’ body.
Methodology: This study was a quasi-experimental research. The sample survey was 25 boy students with age range of 10-12 years old. Sagittal view photographical method was used to evaluate the kinematic changes of body. Measured outcomes including; the cranial horizontal angle (CHA), craniovertebral angle CVA), sagittal shoulder posture angle (SSPA), Trunk angle (TA) and lower limbs angle (LLA), respectively.  Repeated measure ANOVA was used for data analysis.
Results: Results indicated that significant changes occurred in CHA, CVA and TA when the backpack was loaded to 15% of body weight (pConclusion: According to the research findings can be states that; for the 10 to 12 years old boy students, the best weight of the backpack is less than 10% of their body weight, the best location of the backpack is in the lower of spine (L3) and prolonged walk with backpacks can cause destructive postural Changes.

کلیدواژه‌ها [English]

  • Backpack
  • Angular kinematic
  • posture
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