نتایج جستجو برای: muscle length

تعداد نتایج: 623503  

Journal: :The Journal of Physiology 1985

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده تربیت بدنی و علوم ورزشی 1390

مقدمه: سکته مغزی عامل ایجاد عوارض طولانی مدت در بیماران است. از مهمترین عوارض ناشی از سکته مغزی، کاهش تعادل در وضعیت ایستاده و در هنگام راه رفتن و ضعف عضلانی می باشد . هدف از این تحقیق بررسی تاثیر تمرینات ترکیبی ایزومتریک و ایزوتونیک بر تعادل ایستا و قدرت عضلانی (muscle test) بیماران سکته مغزی است. روش شناسی: این پژوهش از نوع نیمه تجربی بود. شرکت کنندگان در این تحقیق را 30 بیمار مرد مبتلا به ...

Journal: :علوم زیستی ورزشی 0
سعید نظری کارشناس ارشد فیزیولوژی ورزش دانشگاه شهید بهشتی علیرضا سلیمی آوانسر استادیار فیزیولوژی ورزش دانشگاه شهید بهشتی وحید نظری کارشناس ارشد مدیریت ورزش دانشگاه مازندران

the aim of this study was to investigate anthropometric and physiological characteristics in junior volleyball players for talent identification according to their volleyball playing positions. 15 junior national volleyball players (mean age 17.7±0.3 years) participated in this study. players were classified to five groups according to their playing positions: setters, liberoes, middle blockers...

Journal: :Journal of biomechanics 2003
Tishya A L Wren

This paper hypothesizes that average muscle length and minimum tendon strain govern muscle and tendon length adaptation in all situations. A model has been implemented to test this hypothesis, and simulations have been performed for normal development, bone lengthening, immobilization, and retinacular release experiments in young and adult animals. The simulation results predict that both muscl...

Journal: :world journal of plastic surgery 0
arash beiraghi-toosi endoscopic and minimally invasive surgery research center, mashhad university of medical sciences, mashhad, iran. ezatolah rezaei surgical oncology research center, mashhad university of medical sciences, mashhad, iran. elham zanjani student research committee, faculty of medicine, mashhad university of medical sciences, mashhad, iran.

background hyperactivity of depressor septi nasi muscle leads to smiling deformity and nasal tip depression. lateral fascicles of this muscle help in widening the nostrils. the purpose of this study was to evaluate the relationship between the nasal length changes and the alar base and the alar flaring changes during smile. methods standard photographs are performed in the face and lateral view...

Journal: :Journal of biomechanics 1999
C C van Donkelaar P J Willems A M Muijtjens M R Drost

An important assumption in 2D numerical models of skeletal muscle contraction involves deformation in the third dimension of the included muscle section. The present paper studies the often used plane strain description. Therefore, 3D muscle surface deformation is measured from marker displacements during isometric contractions at various muscle lengths. Longitudinal strains at superficial musc...

2017
Jeanette M. Thom Joanna Diong Peter W. Stubbs Robert D. Herbert

This study tested the hypothesis that the ratio of changes in muscle fascicle and tendon length that occurs with joint movement scales linearly with the ratio of the slack lengths of the muscle fascicles and tendons. We compared the contribution of muscle fascicles to passive muscle-tendon lengthening in muscles with relatively short and long fascicles. Fifteen healthy adults participated in th...

Journal: :Circulation research 1965
E H SONNENBLICK

• The inverse relation between force and velocity of shortening comprises one of the most fundamental properties of the contractile system of muscle.This force-velocity relation was first defined for skeletal muscle relative to one initial muscle length. Subsequently, Abbott and Willcie demonstrated that the same inverse relation applies at any instant during the course of contraction if modifi...

BACKGROUND Hyperactivity of depressor septi nasi muscle leads to smiling deformity and nasal tip depression. Lateral fascicles of this muscle help in widening the nostrils. The purpose of this study was to evaluate the relationship between the nasal length changes and the alar base and the alar flaring changes during smile. METHODS Standard photographs are performed in the face and lat...

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