Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing
محل انتشار: مجله پژوهش در علوم توانبخشی، دوره: 16، شماره: 1
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 131
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شناسه ملی سند علمی:
JR_JRRS-16-1_028
تاریخ نمایه سازی: 4 بهمن 1401
چکیده مقاله:
Introduction: Theoretically, stiffness is effective in the stability and can subsequently reduce the risk of injury. The aim of this study was to investigate the relationship between vertical stiffness and time to reach stability during landing.Materials and Methods: Twenty healthy active men participated voluntarily in this study. Vertical hopping tests were performed bilaterally, unilaterally on dominant leg, and unilaterally on non-dominant leg with self-selected, controlled (frequency: ۲.۲ Hz), and maximal strategies during which vertical stiffness variables were determined. Single-leg landing test from platform was performed to determine the variables of time to reach stability in vertical, anterior-posterior (AP), and medio-lateral (ML) directions on the force plate. The relationship between vertical stiffness and time to reach stability variables was determined by Pearson correlation test (P ≤ ۰.۰۵).Results: A significant positive relationship was observed between maximum unilateral vertical stiffness on dominant leg (r = ۰.۴۵, P = ۰.۰۴۸) and non-dominant leg (r = ۰.۵۲, P = ۰.۰۱۲) with time to reach stability in AP direction.Conclusion: These findings suggest that high level of vertical stiffness increases the AP time to reach stability and consequently increases the risk of associated injuries.
کلیدواژه ها:
نویسندگان
محمدامین محمدیان
PhD Student in Sports Biomechanics, Department of Biomechanics and Sports Injuries, School of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
حیدر صادقی
Professor, Department of Biomechanics and Sports Injuries, School of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
مهدی خالقی تازجی
Assistant Professor Department of Biomechanics and Sports Injuries, School of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
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