کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
874925 910355 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A hypothesis for the function of braking forces during running turns
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
A hypothesis for the function of braking forces during running turns
چکیده انگلیسی

We examined the functional role of braking forces observed when humans execute turning maneuvers. Deceleration caused by braking forces contributes to changing the movement direction of the center of mass (COM) and maintaining constant velocity. We argue that braking forces also prevent over-rotation of the body about the vertical axis during maneuvers. We analyzed data from sidestep and crossover cuts at average initial running velocities of 3 m s−1. Absent braking, lateral forces would result in body rotations 1.4–3 times the change in COM movement direction, causing the orientation of the body to be substantially mis-aligned with the direction of movement at the end of the step. A simple model based on the hypothesis that body rotation should match COM deflection can explain 70% of the variance in braking forces employed during running turns.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 39, Issue 9, 2006, Pages 1611–1620
نویسندگان
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